swaitsandClaude Opus 4.6
3102fc747a
Implement full SSD1306 OLED display support: - Splash screen on boot (1.5s) with project name, version, board - Dashboard showing radio state, config, counters, RSSI/SNR - RSSI history sparkline (64-sample ring buffer, 2px-wide bars) - DisplayOn/DisplayOff host commands routed via dedicated channel - Pure render functions against generic DrawTarget (no hardware coupling) - Display on/off control bypasses radio task entirely Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2368 lines
76 KiB
Rust
2368 lines
76 KiB
Rust
// Copyright © 2018–2025 Trevor Spiteri
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// This library is free software: you can redistribute it and/or
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// modify it under the terms of either
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//
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// * the Apache License, Version 2.0 or
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// * the MIT License
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//
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// at your option.
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//
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// You should have recieved copies of the Apache License and the MIT
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// License along with the library. If not, see
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// <https://www.apache.org/licenses/LICENSE-2.0> and
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// <https://opensource.org/licenses/MIT>.
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use crate::from_str::ParseFixedError;
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use crate::traits::{Fixed, FixedSigned, FixedUnsigned, FromFixed, ToFixed};
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use crate::types::extra::{LeEqU8, LeEqU16, LeEqU32, LeEqU64, LeEqU128};
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use crate::{
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FixedI8, FixedI16, FixedI32, FixedI64, FixedI128, FixedU8, FixedU16, FixedU32, FixedU64,
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FixedU128,
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};
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use core::fmt::{
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Binary, Debug, Display, Formatter, LowerExp, LowerHex, Octal, Result as FmtResult, UpperExp,
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UpperHex,
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};
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use core::iter::{Product, Sum};
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use core::ops::{
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Add, AddAssign, BitAnd, BitAndAssign, BitOr, BitOrAssign, BitXor, BitXorAssign, Div, DivAssign,
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Mul, MulAssign, Neg, Not, Rem, RemAssign, Shl, ShlAssign, Shr, ShrAssign, Sub, SubAssign,
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};
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use core::str::FromStr;
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/// Provides intentionally wrapped arithmetic on fixed-point numbers.
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///
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/// The underlying value can be retrieved through the `.0` index.
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///
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/// # Examples
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///
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/// ```rust
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/// use fixed::types::I16F16;
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/// use fixed::Wrapping;
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/// let max = Wrapping(I16F16::MAX);
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/// let delta = Wrapping(I16F16::DELTA);
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/// assert_eq!(I16F16::MIN, (max + delta).0);
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/// ```
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#[repr(transparent)]
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#[derive(Clone, Copy, Default, Hash, Eq, PartialEq, Ord, PartialOrd)]
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pub struct Wrapping<F>(pub F);
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impl<F: Fixed> Wrapping<F> {
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/// Zero.
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///
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/// See also <code>FixedI32::[ZERO][FixedI32::ZERO]</code> and
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/// <code>FixedU32::[ZERO][FixedU32::ZERO]</code>.
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///
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/// # Examples
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///
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/// ```rust
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/// use fixed::types::I16F16;
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/// use fixed::Wrapping;
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/// assert_eq!(Wrapping::<I16F16>::ZERO, Wrapping(I16F16::ZERO));
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/// ```
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pub const ZERO: Wrapping<F> = Wrapping(F::ZERO);
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/// The difference between any two successive representable numbers, <i>Δ</i>.
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///
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/// See also <code>FixedI32::[DELTA][FixedI32::DELTA]</code> and
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/// <code>FixedU32::[DELTA][FixedU32::DELTA]</code>.
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///
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/// # Examples
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///
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/// ```rust
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/// use fixed::types::I16F16;
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/// use fixed::Wrapping;
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/// assert_eq!(Wrapping::<I16F16>::DELTA, Wrapping(I16F16::DELTA));
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/// ```
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pub const DELTA: Wrapping<F> = Wrapping(F::DELTA);
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/// The smallest value that can be represented.
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///
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/// See also <code>FixedI32::[MIN][FixedI32::MIN]</code> and
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/// <code>FixedU32::[MIN][FixedU32::MIN]</code>.
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///
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/// # Examples
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///
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/// ```rust
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/// use fixed::types::I16F16;
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/// use fixed::Wrapping;
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/// assert_eq!(Wrapping::<I16F16>::MIN, Wrapping(I16F16::MIN));
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/// ```
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pub const MIN: Wrapping<F> = Wrapping(F::MIN);
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/// The largest value that can be represented.
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///
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/// See also <code>FixedI32::[MAX][FixedI32::MAX]</code> and
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/// <code>FixedU32::[MAX][FixedU32::MAX]</code>.
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///
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/// # Examples
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///
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/// ```rust
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/// use fixed::types::I16F16;
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/// use fixed::Wrapping;
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/// assert_eq!(Wrapping::<I16F16>::MAX, Wrapping(I16F16::MAX));
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/// ```
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pub const MAX: Wrapping<F> = Wrapping(F::MAX);
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/// [`true`] if the type is signed.
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///
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/// See also <code>FixedI32::[IS\_SIGNED][FixedI32::IS_SIGNED]</code> and
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/// <code>FixedU32::[IS\_SIGNED][FixedU32::IS_SIGNED]</code>.
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///
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/// # Examples
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///
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/// ```rust
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/// use fixed::types::{I16F16, U16F16};
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/// use fixed::Wrapping;
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/// assert!(Wrapping::<I16F16>::IS_SIGNED);
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/// assert!(!Wrapping::<U16F16>::IS_SIGNED);
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/// ```
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pub const IS_SIGNED: bool = F::IS_SIGNED;
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/// The number of integer bits.
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///
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/// See also <code>FixedI32::[INT\_NBITS][FixedI32::INT_NBITS]</code> and
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/// <code>FixedU32::[INT\_NBITS][FixedU32::INT_NBITS]</code>.
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///
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/// # Examples
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///
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/// ```rust
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/// use fixed::types::I16F16;
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/// use fixed::Wrapping;
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/// assert_eq!(Wrapping::<I16F16>::INT_NBITS, I16F16::INT_NBITS);
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/// ```
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pub const INT_NBITS: u32 = F::INT_NBITS;
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/// The number of fractional bits.
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///
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/// See also <code>FixedI32::[FRAC\_NBITS][FixedI32::FRAC_NBITS]</code> and
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/// <code>FixedU32::[FRAC\_NBITS][FixedU32::FRAC_NBITS]</code>.
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///
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/// # Examples
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///
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/// ```rust
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/// use fixed::types::I16F16;
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/// use fixed::Wrapping;
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/// assert_eq!(Wrapping::<I16F16>::FRAC_NBITS, I16F16::FRAC_NBITS);
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/// ```
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pub const FRAC_NBITS: u32 = F::FRAC_NBITS;
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/// Creates a fixed-point number that has a bitwise representation
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/// identical to the given integer.
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///
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/// See also <code>FixedI32::[from\_bits][FixedI32::from_bits]</code> and
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/// <code>FixedU32::[from\_bits][FixedU32::from_bits]</code>.
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///
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/// # Examples
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///
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/// ```rust
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/// use fixed::types::I16F16;
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/// use fixed::Wrapping;
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/// assert_eq!(Wrapping::<I16F16>::from_bits(0x1C), Wrapping(I16F16::from_bits(0x1C)));
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/// ```
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#[inline]
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pub fn from_bits(bits: F::Bits) -> Wrapping<F> {
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Wrapping(F::from_bits(bits))
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}
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/// Creates an integer that has a bitwise representation identical
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/// to the given fixed-point number.
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///
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/// See also <code>FixedI32::[to\_bits][FixedI32::to_bits]</code> and
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/// <code>FixedU32::[to\_bits][FixedU32::to_bits]</code>.
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///
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/// # Examples
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///
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/// ```rust
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/// use fixed::types::I16F16;
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/// use fixed::Wrapping;
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/// let w = Wrapping(I16F16::from_bits(0x1C));
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/// assert_eq!(w.to_bits(), 0x1C);
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/// ```
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#[inline]
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pub fn to_bits(self) -> F::Bits {
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self.0.to_bits()
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}
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/// Converts a fixed-point number from big endian to the target’s
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/// endianness.
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///
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/// See also <code>FixedI32::[from\_be][FixedI32::from_be]</code> and
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/// <code>FixedU32::[from\_be][FixedU32::from_be]</code>.
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///
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/// # Examples
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///
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/// ```rust
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/// use fixed::types::I16F16;
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/// use fixed::Wrapping;
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/// let w = Wrapping(I16F16::from_bits(0x1234_5678));
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/// if cfg!(target_endian = "big") {
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/// assert_eq!(Wrapping::from_be(w), w);
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/// } else {
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/// assert_eq!(Wrapping::from_be(w), w.swap_bytes());
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/// }
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/// ```
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#[inline]
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pub fn from_be(w: Self) -> Self {
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Wrapping(F::from_be(w.0))
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}
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/// Converts a fixed-point number from little endian to the
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/// target’s endianness.
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///
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/// See also <code>FixedI32::[from\_le][FixedI32::from_le]</code> and
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/// <code>FixedU32::[from\_le][FixedU32::from_le]</code>.
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///
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/// # Examples
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///
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/// ```rust
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/// use fixed::types::I16F16;
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/// use fixed::Wrapping;
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/// let w = Wrapping(I16F16::from_bits(0x1234_5678));
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/// if cfg!(target_endian = "little") {
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/// assert_eq!(Wrapping::from_le(w), w);
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/// } else {
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/// assert_eq!(Wrapping::from_le(w), w.swap_bytes());
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/// }
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/// ```
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#[inline]
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pub fn from_le(w: Self) -> Self {
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Wrapping(F::from_le(w.0))
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}
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/// Converts `self` to big endian from the target’s endianness.
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///
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/// See also <code>FixedI32::[to\_be][FixedI32::to_be]</code> and
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/// <code>FixedU32::[to\_be][FixedU32::to_be]</code>.
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///
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/// # Examples
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///
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/// ```rust
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/// use fixed::types::I16F16;
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/// use fixed::Wrapping;
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/// let w = Wrapping(I16F16::from_bits(0x1234_5678));
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/// if cfg!(target_endian = "big") {
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/// assert_eq!(w.to_be(), w);
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/// } else {
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/// assert_eq!(w.to_be(), w.swap_bytes());
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/// }
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/// ```
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#[inline]
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#[must_use]
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pub fn to_be(self) -> Self {
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Wrapping(self.0.to_be())
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}
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/// Converts `self` to little endian from the target’s endianness.
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///
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/// See also <code>FixedI32::[to\_le][FixedI32::to_le]</code> and
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/// <code>FixedU32::[to\_le][FixedU32::to_le]</code>.
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///
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/// # Examples
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///
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/// ```rust
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/// use fixed::types::I16F16;
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/// use fixed::Wrapping;
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/// let w = Wrapping(I16F16::from_bits(0x1234_5678));
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/// if cfg!(target_endian = "little") {
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/// assert_eq!(w.to_le(), w);
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/// } else {
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/// assert_eq!(w.to_le(), w.swap_bytes());
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/// }
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/// ```
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#[inline]
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#[must_use]
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pub fn to_le(self) -> Self {
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Wrapping(self.0.to_le())
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}
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/// Reverses the byte order of the fixed-point number.
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///
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/// See also <code>FixedI32::[swap\_bytes][FixedI32::swap_bytes]</code> and
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/// <code>FixedU32::[swap\_bytes][FixedU32::swap_bytes]</code>.
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///
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/// # Examples
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///
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/// ```rust
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/// use fixed::types::I16F16;
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/// use fixed::Wrapping;
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/// let w = Wrapping(I16F16::from_bits(0x1234_5678));
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/// let swapped = Wrapping(I16F16::from_bits(0x7856_3412));
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/// assert_eq!(w.swap_bytes(), swapped);
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/// ```
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#[inline]
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#[must_use]
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pub fn swap_bytes(self) -> Self {
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Wrapping(self.0.swap_bytes())
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}
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/// Creates a fixed-point number from its representation
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/// as a byte array in big endian.
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///
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/// See also
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/// <code>FixedI32::[from\_be\_bytes][FixedI32::from_be_bytes]</code> and
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/// <code>FixedU32::[from\_be\_bytes][FixedU32::from_be_bytes]</code>.
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///
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/// # Examples
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///
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/// ```rust
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/// use fixed::types::I16F16;
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/// use fixed::Wrapping;
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/// let bytes = [0x12, 0x34, 0x56, 0x78];
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/// assert_eq!(
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/// Wrapping::<I16F16>::from_be_bytes(bytes),
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/// Wrapping::<I16F16>::from_bits(0x1234_5678)
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/// );
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/// ```
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#[inline]
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pub fn from_be_bytes(bytes: F::Bytes) -> Self {
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Wrapping(F::from_be_bytes(bytes))
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}
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/// Creates a fixed-point number from its representation
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/// as a byte array in little endian.
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///
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/// See also
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/// <code>FixedI32::[from\_le\_bytes][FixedI32::from_le_bytes]</code> and
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/// <code>FixedU32::[from\_le\_bytes][FixedU32::from_le_bytes]</code>.
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///
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/// # Examples
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///
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/// ```rust
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/// use fixed::types::I16F16;
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/// use fixed::Wrapping;
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/// let bytes = [0x78, 0x56, 0x34, 0x12];
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/// assert_eq!(
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/// Wrapping::<I16F16>::from_le_bytes(bytes),
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/// Wrapping::<I16F16>::from_bits(0x1234_5678)
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/// );
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/// ```
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#[inline]
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pub fn from_le_bytes(bytes: F::Bytes) -> Self {
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Wrapping(F::from_le_bytes(bytes))
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}
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/// Creates a fixed-point number from its representation
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/// as a byte array in native endian.
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///
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/// See also
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/// <code>FixedI32::[from\_ne\_bytes][FixedI32::from_ne_bytes]</code> and
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/// <code>FixedU32::[from\_ne\_bytes][FixedU32::from_ne_bytes]</code>.
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///
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/// # Examples
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///
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/// ```rust
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/// use fixed::types::I16F16;
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/// use fixed::Wrapping;
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/// let bytes = if cfg!(target_endian = "big") {
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/// [0x12, 0x34, 0x56, 0x78]
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/// } else {
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/// [0x78, 0x56, 0x34, 0x12]
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/// };
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/// assert_eq!(
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/// Wrapping::<I16F16>::from_ne_bytes(bytes),
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/// Wrapping::<I16F16>::from_bits(0x1234_5678)
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/// );
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/// ```
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#[inline]
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pub fn from_ne_bytes(bytes: F::Bytes) -> Self {
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Wrapping(F::from_ne_bytes(bytes))
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}
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/// Returns the memory representation of this fixed-point
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/// number as a byte array in big-endian byte order.
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///
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/// See also <code>FixedI32::[to\_be\_bytes][FixedI32::to_be_bytes]</code>
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/// and <code>FixedU32::[to\_be\_bytes][FixedU32::to_be_bytes]</code>.
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///
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/// # Examples
|
||
///
|
||
/// ```rust
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/// use fixed::types::I16F16;
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/// use fixed::Wrapping;
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/// assert_eq!(
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/// Wrapping::<I16F16>::from_bits(0x1234_5678).to_be_bytes(),
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/// [0x12, 0x34, 0x56, 0x78]
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/// );
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/// ```
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#[inline]
|
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pub fn to_be_bytes(self) -> F::Bytes {
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self.0.to_be_bytes()
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}
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/// Returns the memory representation of this fixed-point
|
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/// number as a byte array in little-endian byte order.
|
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///
|
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/// See also <code>FixedI32::[to\_le\_bytes][FixedI32::to_le_bytes]</code>
|
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/// and <code>FixedU32::[to\_le\_bytes][FixedU32::to_le_bytes]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
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/// use fixed::Wrapping;
|
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/// assert_eq!(
|
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/// Wrapping::<I16F16>::from_bits(0x1234_5678).to_le_bytes(),
|
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/// [0x78, 0x56, 0x34, 0x12]
|
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/// );
|
||
/// ```
|
||
#[inline]
|
||
pub fn to_le_bytes(self) -> F::Bytes {
|
||
self.0.to_le_bytes()
|
||
}
|
||
|
||
/// Returns the memory representation of this fixed-point
|
||
/// number as a byte array in native-endian byte order.
|
||
///
|
||
/// See also <code>FixedI32::[to\_ne\_bytes][FixedI32::to_ne_bytes]</code>
|
||
/// and <code>FixedU32::[to\_ne\_bytes][FixedU32::to_ne_bytes]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
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/// use fixed::Wrapping;
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/// let bytes = if cfg!(target_endian = "big") {
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/// [0x12, 0x34, 0x56, 0x78]
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/// } else {
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/// [0x78, 0x56, 0x34, 0x12]
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/// };
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/// assert_eq!(
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/// Wrapping::<I16F16>::from_bits(0x1234_5678).to_ne_bytes(),
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/// bytes
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/// );
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/// ```
|
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#[inline]
|
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pub fn to_ne_bytes(self) -> F::Bytes {
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self.0.to_ne_bytes()
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}
|
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|
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/// Wrapping conversion from another number.
|
||
///
|
||
/// The other number can be:
|
||
///
|
||
/// * A fixed-point number. Any extra fractional bits are
|
||
/// discarded, which rounds towards −∞.
|
||
/// * An integer of type [`i8`], [`i16`], [`i32`], [`i64`], [`i128`],
|
||
/// [`isize`], [`u8`], [`u16`], [`u32`], [`u64`], [`u128`], or
|
||
/// [`usize`].
|
||
/// * A floating-point number of type
|
||
/// <code>[half]::[f16][half::f16]</code>,
|
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/// <code>[half]::[bf16][half::bf16]</code>, [`f32`], [`f64`] or
|
||
/// [`F128`]. For this conversion, the method rounds to the nearest,
|
||
/// with ties rounding to even.
|
||
/// * Any other number `src` for which [`ToFixed`] is
|
||
/// implemented, in which case this method returns
|
||
/// <code>[Wrapping]\(src.[wrapping\_to\_fixed][ToFixed::wrapping_to_fixed]\())</code>.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_from\_num][FixedI32::wrapping_from_num]</code>
|
||
/// and
|
||
/// <code>FixedU32::[wrapping\_from\_num][FixedU32::wrapping_from_num]</code>.
|
||
///
|
||
/// # Panics
|
||
///
|
||
/// For floating-point numbers, panics if the value is not [finite].
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::{I4F4, I16F16};
|
||
/// use fixed::Wrapping;
|
||
///
|
||
/// // 0x1234.5678 wraps into 0x4.5
|
||
/// let src = I16F16::from_bits(0x1234_5678);
|
||
/// let dst = Wrapping::<I4F4>::from_num(src);
|
||
/// assert_eq!(dst, Wrapping(I4F4::from_bits(0x45)));
|
||
///
|
||
/// // 0x1234 wraps into 0x4.0
|
||
/// let src_int = 0x1234_i32;
|
||
/// let dst_int = Wrapping::<I4F4>::from_num(src_int);
|
||
/// assert_eq!(dst_int, Wrapping(I4F4::from_bits(0x40)));
|
||
///
|
||
/// // 129.75 wrapped into 1.75 (binary 1.1100)
|
||
/// let src_float = 129.75;
|
||
/// let dst_float = Wrapping::<I4F4>::from_num(src_float);
|
||
/// assert_eq!(dst_float, Wrapping(I4F4::from_bits(0b11100)));
|
||
/// ```
|
||
///
|
||
/// [`F128`]: crate::F128
|
||
/// [finite]: f64::is_finite
|
||
#[inline]
|
||
#[track_caller]
|
||
pub fn from_num<Src: ToFixed>(src: Src) -> Wrapping<F> {
|
||
Wrapping(src.wrapping_to_fixed())
|
||
}
|
||
|
||
/// Converts a fixed-point number to another number, wrapping the
|
||
/// value on overflow.
|
||
///
|
||
/// The other number can be:
|
||
///
|
||
/// * Another fixed-point number. Any extra fractional bits are
|
||
/// discarded, which rounds towards −∞.
|
||
/// * An integer of type [`i8`], [`i16`], [`i32`], [`i64`], [`i128`],
|
||
/// [`isize`], [`u8`], [`u16`], [`u32`], [`u64`], [`u128`], or
|
||
/// [`usize`]. Any fractional bits are discarded, which rounds
|
||
/// towards −∞.
|
||
/// * A floating-point number of type
|
||
/// <code>[half]::[f16][half::f16]</code>,
|
||
/// <code>[half]::[bf16][half::bf16]</code>, [`f32`], [`f64`] or
|
||
/// [`F128`]. For this conversion, the method rounds to the nearest,
|
||
/// with ties rounding to even.
|
||
/// * Any other type `Dst` for which [`FromFixed`] is
|
||
/// implemented, in which case this method returns
|
||
/// <code>Dst::[wrapping\_from\_fixed][FromFixed::wrapping_from_fixed]\(self.0)</code>.
|
||
///
|
||
/// See also <code>FixedI32::[wrapping\_to\_num][FixedI32::wrapping_to_num]</code> and
|
||
/// <code>FixedU32::[wrapping\_to\_num][FixedU32::wrapping_to_num]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::{I16F16, I2F6, I4F4};
|
||
/// use fixed::Wrapping;
|
||
///
|
||
/// // conversion that fits
|
||
/// let src = Wrapping(I4F4::from_num(1.75));
|
||
/// let expected = I16F16::from_num(1.75);
|
||
/// assert_eq!(src.to_num::<I16F16>(), expected);
|
||
///
|
||
/// // conversion that wraps
|
||
/// let src = Wrapping(I4F4::MAX);
|
||
/// let wrapped = I2F6::from_bits(I2F6::MAX.to_bits() << 2);
|
||
/// assert_eq!(src.to_num::<I2F6>(), wrapped);
|
||
/// ```
|
||
///
|
||
/// [`F128`]: crate::F128
|
||
#[inline]
|
||
pub fn to_num<Dst: FromFixed>(self) -> Dst {
|
||
Dst::wrapping_from_fixed(self.0)
|
||
}
|
||
|
||
/// Parses a string slice containing binary digits to return a fixed-point number.
|
||
///
|
||
/// Rounding is to the nearest, with ties rounded to even.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_from\_str\_binary][FixedI32::wrapping_from_str_binary]</code>
|
||
/// and
|
||
/// <code>FixedU32::[wrapping\_from\_str\_binary][FixedU32::wrapping_from_str_binary]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I8F8;
|
||
/// use fixed::Wrapping;
|
||
/// let check = Wrapping(I8F8::from_bits(0b1110001 << (8 - 1)));
|
||
/// assert_eq!(Wrapping::<I8F8>::from_str_binary("101100111000.1"), Ok(check));
|
||
/// ```
|
||
#[inline]
|
||
pub fn from_str_binary(src: &str) -> Result<Wrapping<F>, ParseFixedError> {
|
||
F::wrapping_from_str_binary(src).map(Wrapping)
|
||
}
|
||
|
||
/// Parses a string slice containing octal digits to return a fixed-point number.
|
||
///
|
||
/// Rounding is to the nearest, with ties rounded to even.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_from\_str\_octal][FixedI32::wrapping_from_str_octal]</code>
|
||
/// and
|
||
/// <code>FixedU32::[wrapping\_from\_str\_octal][FixedU32::wrapping_from_str_octal]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I8F8;
|
||
/// use fixed::Wrapping;
|
||
/// let check = Wrapping(I8F8::from_bits(0o1654 << (8 - 3)));
|
||
/// assert_eq!(Wrapping::<I8F8>::from_str_octal("7165.4"), Ok(check));
|
||
/// ```
|
||
#[inline]
|
||
pub fn from_str_octal(src: &str) -> Result<Wrapping<F>, ParseFixedError> {
|
||
F::wrapping_from_str_octal(src).map(Wrapping)
|
||
}
|
||
|
||
/// Parses a string slice containing hexadecimal digits to return a fixed-point number.
|
||
///
|
||
/// Rounding is to the nearest, with ties rounded to even.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_from\_str\_hex][FixedI32::wrapping_from_str_hex]</code>
|
||
/// and
|
||
/// <code>FixedU32::[wrapping\_from\_str\_hex][FixedU32::wrapping_from_str_hex]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I8F8;
|
||
/// use fixed::Wrapping;
|
||
/// let check = Wrapping(I8F8::from_bits(0xFFE));
|
||
/// assert_eq!(Wrapping::<I8F8>::from_str_hex("C0F.FE"), Ok(check));
|
||
/// ```
|
||
#[inline]
|
||
pub fn from_str_hex(src: &str) -> Result<Wrapping<F>, ParseFixedError> {
|
||
F::wrapping_from_str_hex(src).map(Wrapping)
|
||
}
|
||
|
||
/// Parses an ASCII-byte slice containing decimal digits to return a fixed-point number.
|
||
///
|
||
/// Rounding is to the nearest, with ties rounded to even.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_from\_ascii][FixedI32::wrapping_from_ascii]</code>
|
||
/// and
|
||
/// <code>FixedU32::[wrapping\_from\_ascii][FixedU32::wrapping_from_ascii]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I8F8;
|
||
/// use fixed::Wrapping;
|
||
/// // 16 + 3/4 = 16.75
|
||
/// let check = Wrapping(I8F8::from_bits((16 << 8) + (3 << 8) / 4));
|
||
/// assert_eq!(Wrapping::<I8F8>::from_ascii(b"16.75"), Ok(check));
|
||
/// ```
|
||
#[inline]
|
||
pub fn from_ascii(src: &[u8]) -> Result<Wrapping<F>, ParseFixedError> {
|
||
F::wrapping_from_ascii(src).map(Wrapping)
|
||
}
|
||
|
||
/// Parses an ASCII-byte slice containing binary digits to return a fixed-point number.
|
||
///
|
||
/// Rounding is to the nearest, with ties rounded to even.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_from\_ascii\_binary][FixedI32::wrapping_from_ascii_binary]</code>
|
||
/// and
|
||
/// <code>FixedU32::[wrapping\_from\_ascii\_binary][FixedU32::wrapping_from_ascii_binary]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I8F8;
|
||
/// use fixed::Wrapping;
|
||
/// let check = Wrapping(I8F8::from_bits(0b1110001 << (8 - 1)));
|
||
/// assert_eq!(Wrapping::<I8F8>::from_ascii_binary(b"101100111000.1"), Ok(check));
|
||
/// ```
|
||
#[inline]
|
||
pub fn from_ascii_binary(src: &[u8]) -> Result<Wrapping<F>, ParseFixedError> {
|
||
F::wrapping_from_ascii_binary(src).map(Wrapping)
|
||
}
|
||
|
||
/// Parses an ASCII-byte slice containing octal digits to return a fixed-point number.
|
||
///
|
||
/// Rounding is to the nearest, with ties rounded to even.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_from\_ascii\_octal][FixedI32::wrapping_from_ascii_octal]</code>
|
||
/// and
|
||
/// <code>FixedU32::[wrapping\_from\_ascii\_octal][FixedU32::wrapping_from_ascii_octal]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I8F8;
|
||
/// use fixed::Wrapping;
|
||
/// let check = Wrapping(I8F8::from_bits(0o1654 << (8 - 3)));
|
||
/// assert_eq!(Wrapping::<I8F8>::from_ascii_octal(b"7165.4"), Ok(check));
|
||
/// ```
|
||
#[inline]
|
||
pub fn from_ascii_octal(src: &[u8]) -> Result<Wrapping<F>, ParseFixedError> {
|
||
F::wrapping_from_ascii_octal(src).map(Wrapping)
|
||
}
|
||
|
||
/// Parses an ASCII-byte slice containing hexadecimal digits to return a fixed-point number.
|
||
///
|
||
/// Rounding is to the nearest, with ties rounded to even.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_from\_ascii\_hex][FixedI32::wrapping_from_ascii_hex]</code>
|
||
/// and
|
||
/// <code>FixedU32::[wrapping\_from\_ascii\_hex][FixedU32::wrapping_from_ascii_hex]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I8F8;
|
||
/// use fixed::Wrapping;
|
||
/// let check = Wrapping(I8F8::from_bits(0xFFE));
|
||
/// assert_eq!(Wrapping::<I8F8>::from_ascii_hex(b"C0F.FE"), Ok(check));
|
||
/// ```
|
||
#[inline]
|
||
pub fn from_ascii_hex(src: &[u8]) -> Result<Wrapping<F>, ParseFixedError> {
|
||
F::wrapping_from_ascii_hex(src).map(Wrapping)
|
||
}
|
||
|
||
/// Returns the integer part.
|
||
///
|
||
/// Note that since the numbers are stored in two’s complement,
|
||
/// negative numbers with non-zero fractional parts will be
|
||
/// rounded towards −∞, except in the case where there are no
|
||
/// integer bits, for example for the type
|
||
/// <code>[Wrapping]<[I0F16]></code>, where the return value
|
||
/// is always zero.
|
||
///
|
||
/// See also <code>FixedI32::[int][FixedI32::int]</code> and
|
||
/// <code>FixedU32::[int][FixedU32::int]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// assert_eq!(Wrapping(I16F16::from_num(12.25)).int(), Wrapping(I16F16::from_num(12)));
|
||
/// assert_eq!(Wrapping(I16F16::from_num(-12.25)).int(), Wrapping(I16F16::from_num(-13)));
|
||
/// ```
|
||
///
|
||
/// [I0F16]: crate::types::I0F16
|
||
#[inline]
|
||
#[must_use]
|
||
pub fn int(self) -> Wrapping<F> {
|
||
Wrapping(self.0.int())
|
||
}
|
||
|
||
/// Returns the fractional part.
|
||
///
|
||
/// Note that since the numbers are stored in two’s complement,
|
||
/// the returned fraction will be non-negative for negative
|
||
/// numbers, except in the case where there are no integer bits,
|
||
/// for example for the type
|
||
/// <code>[Wrapping]<[I0F16]></code>,
|
||
/// where the return value is always equal to `self`.
|
||
///
|
||
/// See also <code>FixedI32::[frac][FixedI32::frac]</code> and
|
||
/// <code>FixedU32::[frac][FixedU32::frac]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// assert_eq!(Wrapping(I16F16::from_num(12.25)).frac(), Wrapping(I16F16::from_num(0.25)));
|
||
/// assert_eq!(Wrapping(I16F16::from_num(-12.25)).frac(), Wrapping(I16F16::from_num(0.75)));
|
||
/// ```
|
||
///
|
||
/// [I0F16]: crate::types::I0F16
|
||
#[inline]
|
||
#[must_use]
|
||
pub fn frac(self) -> Wrapping<F> {
|
||
Wrapping(self.0.frac())
|
||
}
|
||
|
||
/// Rounds to the next integer towards 0.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[round\_to\_zero][FixedI32::round_to_zero]</code> and
|
||
/// <code>FixedU32::[round\_to\_zero][FixedU32::round_to_zero]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// let three = Wrapping(I16F16::from_num(3));
|
||
/// assert_eq!(Wrapping(I16F16::from_num(3.9)).round_to_zero(), three);
|
||
/// assert_eq!(Wrapping(I16F16::from_num(-3.9)).round_to_zero(), -three);
|
||
/// ```
|
||
#[inline]
|
||
#[must_use]
|
||
pub fn round_to_zero(self) -> Wrapping<F> {
|
||
Wrapping(self.0.round_to_zero())
|
||
}
|
||
|
||
/// Wrapping ceil. Rounds to the next integer towards +∞, wrapping
|
||
/// on overflow.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_ceil][FixedI32::wrapping_ceil]</code> and
|
||
/// <code>FixedU32::[wrapping\_ceil][FixedU32::wrapping_ceil]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// let two_half = Wrapping(I16F16::from_num(5) / 2);
|
||
/// assert_eq!(two_half.ceil(), Wrapping(I16F16::from_num(3)));
|
||
/// assert_eq!(Wrapping(I16F16::MAX).ceil(), Wrapping(I16F16::MIN));
|
||
/// ```
|
||
#[inline]
|
||
#[must_use]
|
||
pub fn ceil(self) -> Wrapping<F> {
|
||
Wrapping(self.0.wrapping_ceil())
|
||
}
|
||
|
||
/// Wrapping floor. Rounds to the next integer towards −∞,
|
||
/// wrapping on overflow.
|
||
///
|
||
/// Overflow can only occur for signed numbers with zero integer
|
||
/// bits.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_floor][FixedI32::wrapping_floor]</code> and
|
||
/// <code>FixedU32::[wrapping\_floor][FixedU32::wrapping_floor]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::{I0F32, I16F16};
|
||
/// use fixed::Wrapping;
|
||
/// let two_half = Wrapping(I16F16::from_num(5) / 2);
|
||
/// assert_eq!(two_half.floor(), Wrapping(I16F16::from_num(2)));
|
||
/// assert_eq!(Wrapping(I0F32::MIN).floor(), Wrapping(I0F32::ZERO));
|
||
/// ```
|
||
#[inline]
|
||
#[must_use]
|
||
pub fn floor(self) -> Wrapping<F> {
|
||
Wrapping(self.0.wrapping_floor())
|
||
}
|
||
|
||
/// Wrapping round. Rounds to the next integer to the nearest,
|
||
/// with ties rounded away from zero, and wrapping on overflow.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_round][FixedI32::wrapping_round]</code> and
|
||
/// <code>FixedU32::[wrapping\_round][FixedU32::wrapping_round]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// let two_half = Wrapping(I16F16::from_num(5) / 2);
|
||
/// assert_eq!(two_half.round(), Wrapping(I16F16::from_num(3)));
|
||
/// assert_eq!((-two_half).round(), Wrapping(I16F16::from_num(-3)));
|
||
/// assert_eq!(Wrapping(I16F16::MAX).round(), Wrapping(I16F16::MIN));
|
||
/// ```
|
||
#[inline]
|
||
#[must_use]
|
||
pub fn round(self) -> Wrapping<F> {
|
||
Wrapping(self.0.wrapping_round())
|
||
}
|
||
|
||
/// Wrapping round. Rounds to the next integer to the nearest, with ties
|
||
/// rounded to even, and wrapping on overflow.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_round\_ties\_even][FixedI32::wrapping_round_ties_even]</code>
|
||
/// and
|
||
/// <code>FixedU32::[wrapping\_round\_ties\_even][FixedU32::wrapping_round_ties_even]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// let two_half = Wrapping(I16F16::from_num(2.5));
|
||
/// assert_eq!(two_half.round_ties_even(), Wrapping(I16F16::from_num(2)));
|
||
/// let three_half = Wrapping(I16F16::from_num(3.5));
|
||
/// assert_eq!(three_half.round_ties_even(), Wrapping(I16F16::from_num(4)));
|
||
/// let max = Wrapping(I16F16::MAX);
|
||
/// assert_eq!(max.round_ties_even(), Wrapping(I16F16::MIN));
|
||
/// ```
|
||
#[inline]
|
||
#[must_use]
|
||
pub fn round_ties_even(self) -> Wrapping<F> {
|
||
Wrapping(self.0.wrapping_round_ties_even())
|
||
}
|
||
|
||
/// Returns the number of ones in the binary representation.
|
||
///
|
||
/// See also <code>FixedI32::[count\_ones][FixedI32::count_ones]</code> and
|
||
/// <code>FixedU32::[count\_ones][FixedU32::count_ones]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// let w = Wrapping(I16F16::from_bits(0x00FF_FF00));
|
||
/// assert_eq!(w.count_ones(), w.0.count_ones());
|
||
/// ```
|
||
#[inline]
|
||
#[doc(alias("popcount", "popcnt"))]
|
||
pub fn count_ones(self) -> u32 {
|
||
self.0.count_ones()
|
||
}
|
||
|
||
/// Returns the number of zeros in the binary representation.
|
||
///
|
||
/// See also <code>FixedI32::[count\_zeros][FixedI32::count_zeros]</code>
|
||
/// and <code>FixedU32::[count\_zeros][FixedU32::count_zeros]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// let w = Wrapping(I16F16::from_bits(0x00FF_FF00));
|
||
/// assert_eq!(w.count_zeros(), w.0.count_zeros());
|
||
/// ```
|
||
#[inline]
|
||
pub fn count_zeros(self) -> u32 {
|
||
self.0.count_zeros()
|
||
}
|
||
|
||
/// Returns the number of leading ones in the binary representation.
|
||
///
|
||
/// See also <code>FixedI32::[leading\_ones][FixedI32::leading_ones]</code>
|
||
/// and <code>FixedU32::[leading\_ones][FixedU32::leading_ones]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::U16F16;
|
||
/// use fixed::Wrapping;
|
||
/// let w = Wrapping(U16F16::from_bits(0xFF00_00FF));
|
||
/// assert_eq!(w.leading_ones(), w.0.leading_ones());
|
||
/// ```
|
||
#[inline]
|
||
pub fn leading_ones(self) -> u32 {
|
||
self.0.leading_ones()
|
||
}
|
||
|
||
/// Returns the number of leading zeros in the binary representation.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[leading\_zeros][FixedI32::leading_zeros]</code> and
|
||
/// <code>FixedU32::[leading\_zeros][FixedU32::leading_zeros]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// let w = Wrapping(I16F16::from_bits(0x00FF_FF00));
|
||
/// assert_eq!(w.leading_zeros(), w.0.leading_zeros());
|
||
/// ```
|
||
#[inline]
|
||
pub fn leading_zeros(self) -> u32 {
|
||
self.0.leading_zeros()
|
||
}
|
||
|
||
/// Returns the number of trailing ones in the binary representation.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[trailing\_ones][FixedI32::trailing_ones]</code> and
|
||
/// <code>FixedU32::[trailing\_ones][FixedU32::trailing_ones]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::U16F16;
|
||
/// use fixed::Wrapping;
|
||
/// let w = Wrapping(U16F16::from_bits(0xFF00_00FF));
|
||
/// assert_eq!(w.trailing_ones(), w.0.trailing_ones());
|
||
/// ```
|
||
#[inline]
|
||
pub fn trailing_ones(self) -> u32 {
|
||
self.0.trailing_ones()
|
||
}
|
||
|
||
/// Returns the number of trailing zeros in the binary representation.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[trailing\_zeros][FixedI32::trailing_zeros]</code> and
|
||
/// <code>FixedU32::[trailing\_zeros][FixedU32::trailing_zeros]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// let w = Wrapping(I16F16::from_bits(0x00FF_FF00));
|
||
/// assert_eq!(w.trailing_zeros(), w.0.trailing_zeros());
|
||
/// ```
|
||
#[inline]
|
||
pub fn trailing_zeros(self) -> u32 {
|
||
self.0.trailing_zeros()
|
||
}
|
||
|
||
/// Returns the square root.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_sqrt][FixedI32::wrapping_sqrt]</code> and
|
||
/// <code>FixedU32::[wrapping\_sqrt][FixedU32::wrapping_sqrt]</code>.
|
||
///
|
||
/// # Panics
|
||
///
|
||
/// Panics if the number is negative.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I0F32;
|
||
/// use fixed::Wrapping;
|
||
/// assert_eq!(Wrapping(I0F32::lit("0b0.0001")).sqrt().0, I0F32::lit("0b0.01"));
|
||
///
|
||
/// // This method handles the overflow corner case.
|
||
/// let w = Wrapping(I0F32::from_num(0.25));
|
||
/// assert_eq!(w.sqrt().0, -0.5);
|
||
/// ```
|
||
#[inline]
|
||
#[track_caller]
|
||
pub fn sqrt(self) -> Self {
|
||
Wrapping(self.0.wrapping_sqrt())
|
||
}
|
||
|
||
/// Integer base-2 logarithm, rounded down.
|
||
///
|
||
/// See also <code>FixedI32::[int\_log2][FixedI32::int_log2]</code> and
|
||
/// <code>FixedU32::[int\_log2][FixedU32::int_log2]</code>.
|
||
///
|
||
/// # Panics
|
||
///
|
||
/// Panics if the fixed-point number is ≤ 0.
|
||
#[inline]
|
||
#[track_caller]
|
||
#[doc(alias("ilog2"))]
|
||
pub fn int_log2(self) -> i32 {
|
||
self.0.int_log2()
|
||
}
|
||
|
||
/// Integer base-10 logarithm, rounded down.
|
||
///
|
||
/// See also <code>FixedI32::[int\_log10][FixedI32::int_log10]</code> and
|
||
/// <code>FixedU32::[int\_log10][FixedU32::int_log10]</code>.
|
||
///
|
||
/// # Panics
|
||
///
|
||
/// Panics if the fixed-point number is ≤ 0.
|
||
#[inline]
|
||
#[track_caller]
|
||
#[doc(alias("ilog10"))]
|
||
pub fn int_log10(self) -> i32 {
|
||
self.0.int_log10()
|
||
}
|
||
|
||
/// Integer logarithm to the specified base, rounded down.
|
||
///
|
||
/// See also <code>FixedI32::[int\_log][FixedI32::int_log]</code> and
|
||
/// <code>FixedU32::[int\_log][FixedU32::int_log]</code>.
|
||
///
|
||
/// # Panics
|
||
///
|
||
/// Panics if the fixed-point number is ≤ 0 or if the base is < 2.
|
||
#[inline]
|
||
#[track_caller]
|
||
#[doc(alias("ilog"))]
|
||
pub fn int_log(self, base: u32) -> i32 {
|
||
self.0.int_log(base)
|
||
}
|
||
|
||
/// Reverses the order of the bits of the fixed-point number.
|
||
///
|
||
/// See also <code>FixedI32::[reverse\_bits][FixedI32::reverse_bits]</code>
|
||
/// and <code>FixedU32::[reverse\_bits][FixedU32::reverse_bits]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// let i = I16F16::from_bits(0x1234_5678);
|
||
/// assert_eq!(Wrapping(i).reverse_bits(), Wrapping(i.reverse_bits()));
|
||
/// ```
|
||
#[inline]
|
||
#[must_use = "this returns the result of the operation, without modifying the original"]
|
||
pub fn reverse_bits(self) -> Wrapping<F> {
|
||
Wrapping(self.0.reverse_bits())
|
||
}
|
||
|
||
/// Shifts to the left by `n` bits, wrapping the truncated bits to the right end.
|
||
///
|
||
/// See also <code>FixedI32::[rotate\_left][FixedI32::rotate_left]</code>
|
||
/// and <code>FixedU32::[rotate\_left][FixedU32::rotate_left]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// let i = I16F16::from_bits(0x00FF_FF00);
|
||
/// assert_eq!(Wrapping(i).rotate_left(12), Wrapping(i.rotate_left(12)));
|
||
/// ```
|
||
#[inline]
|
||
#[must_use = "this returns the result of the operation, without modifying the original"]
|
||
pub fn rotate_left(self, n: u32) -> Wrapping<F> {
|
||
Wrapping(self.0.rotate_left(n))
|
||
}
|
||
|
||
/// Shifts to the right by `n` bits, wrapping the truncated bits to the left end.
|
||
///
|
||
/// See also <code>FixedI32::[rotate\_right][FixedI32::rotate_right]</code>
|
||
/// and <code>FixedU32::[rotate\_right][FixedU32::rotate_right]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// let i = I16F16::from_bits(0x00FF_FF00);
|
||
/// assert_eq!(Wrapping(i).rotate_right(12), Wrapping(i.rotate_right(12)));
|
||
/// ```
|
||
#[inline]
|
||
#[must_use = "this returns the result of the operation, without modifying the original"]
|
||
pub fn rotate_right(self, n: u32) -> Wrapping<F> {
|
||
Wrapping(self.0.rotate_right(n))
|
||
}
|
||
|
||
/// Returns [`true`] if the number is zero.
|
||
///
|
||
/// See also <code>FixedI32::[is\_zero][FixedI32::is_zero]</code> and
|
||
/// <code>FixedU32::[is\_zero][FixedU32::is_zero]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// assert!(Wrapping(I16F16::ZERO).is_zero());
|
||
/// assert!(!Wrapping(I16F16::from_num(4.3)).is_zero());
|
||
/// ```
|
||
#[inline]
|
||
pub fn is_zero(self) -> bool {
|
||
self.0.is_zero()
|
||
}
|
||
|
||
/// Returns the distance from `self` to `other`.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_dist][FixedI32::wrapping_dist]</code> and
|
||
/// <code>FixedU32::[wrapping\_dist][FixedU32::wrapping_dist]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// type Wr = Wrapping<I16F16>;
|
||
/// assert_eq!(Wr::from_num(-1).dist(Wr::from_num(4)), Wr::from_num(5));
|
||
/// assert_eq!(Wr::MIN.dist(Wr::MAX), -Wr::DELTA);
|
||
/// ```
|
||
#[inline]
|
||
#[must_use = "this returns the result of the operation, without modifying the original"]
|
||
pub fn dist(self, other: Wrapping<F>) -> Wrapping<F> {
|
||
Wrapping(self.0.wrapping_dist(other.0))
|
||
}
|
||
|
||
/// Returns the mean of `self` and `other`.
|
||
///
|
||
/// See also <code>FixedI32::[mean][FixedI32::mean]</code> and
|
||
/// <code>FixedU32::[mean][FixedU32::mean]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// let three = Wrapping(I16F16::from_num(3));
|
||
/// let four = Wrapping(I16F16::from_num(4));
|
||
/// assert_eq!(three.mean(four), Wrapping(I16F16::from_num(3.5)));
|
||
/// assert_eq!(three.mean(-four), Wrapping(I16F16::from_num(-0.5)));
|
||
/// ```
|
||
#[inline]
|
||
#[must_use = "this returns the result of the operation, without modifying the original"]
|
||
pub fn mean(self, other: Wrapping<F>) -> Wrapping<F> {
|
||
Wrapping(self.0.mean(other.0))
|
||
}
|
||
|
||
/// Compute the hypotenuse of a right triange.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_hypot][FixedI32::wrapping_hypot]</code> and
|
||
/// <code>FixedU32::[wrapping\_hypot][FixedU32::wrapping_hypot]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I8F8;
|
||
/// use fixed::Wrapping;
|
||
/// type Wr = Wrapping<I8F8>;
|
||
/// // hypot(3, 4) == 5
|
||
/// assert_eq!(Wr::from_num(3).hypot(Wr::from_num(4)), Wr::from_num(5));
|
||
/// // hypot(88, 105) == 137, which wraps to -119
|
||
/// assert_eq!(Wr::from_num(88).hypot(Wr::from_num(105)), Wr::from_num(-119));
|
||
/// ```
|
||
#[inline]
|
||
#[must_use = "this returns the result of the operation, without modifying the original"]
|
||
pub fn hypot(self, other: Wrapping<F>) -> Wrapping<F> {
|
||
Wrapping(self.0.wrapping_hypot(other.0))
|
||
}
|
||
|
||
/// Returns the reciprocal (inverse), 1/`self`.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_recip][FixedI32::wrapping_recip]</code> and
|
||
/// <code>FixedU32::[wrapping\_recip][FixedU32::wrapping_recip]</code>.
|
||
///
|
||
/// # Panics
|
||
///
|
||
/// Panics if `self` is zero.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I8F24;
|
||
/// use fixed::Wrapping;
|
||
/// let quarter = Wrapping(I8F24::from_num(0.25));
|
||
/// let frac_1_512 = Wrapping(I8F24::ONE / 512);
|
||
/// assert_eq!(quarter.recip(), Wrapping(I8F24::from_num(4)));
|
||
/// assert_eq!(frac_1_512.recip(), Wrapping(I8F24::ZERO));
|
||
/// ```
|
||
#[inline]
|
||
#[track_caller]
|
||
#[must_use]
|
||
pub fn recip(self) -> Wrapping<F> {
|
||
Wrapping(self.0.wrapping_recip())
|
||
}
|
||
|
||
/// Returns the next multiple of `other`.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_next\_multiple\_of][FixedI32::wrapping_next_multiple_of]</code>
|
||
/// and
|
||
/// <code>FixedU32::[wrapping\_next\_multiple\_of][FixedU32::wrapping_next_multiple_of]</code>.
|
||
///
|
||
/// # Panics
|
||
///
|
||
/// Panics if `other` is zero.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// let one_point_5 = Wrapping::<I16F16>::from_num(1.5);
|
||
/// let four = Wrapping::<I16F16>::from_num(4);
|
||
/// let four_point_5 = Wrapping::<I16F16>::from_num(4.5);
|
||
/// assert_eq!(four.next_multiple_of(one_point_5), four_point_5);
|
||
///
|
||
/// let max = Wrapping::<I16F16>::MAX;
|
||
/// let max_minus_delta = max - Wrapping::<I16F16>::DELTA;
|
||
/// assert_eq!(max.next_multiple_of(max_minus_delta), max_minus_delta * 2);
|
||
/// ```
|
||
#[inline]
|
||
#[track_caller]
|
||
#[must_use]
|
||
pub fn next_multiple_of(self, other: Wrapping<F>) -> Wrapping<F> {
|
||
Wrapping(self.0.wrapping_next_multiple_of(other.0))
|
||
}
|
||
|
||
/// Multiply and add. Returns `self` × `mul` + `add`.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_mul\_add][FixedI32::wrapping_mul_add]</code>
|
||
/// and
|
||
/// <code>FixedU32::[wrapping\_mul\_add][FixedU32::wrapping_mul_add]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// let half = Wrapping(I16F16::from_num(0.5));
|
||
/// let three = Wrapping(I16F16::from_num(3));
|
||
/// let four = Wrapping(I16F16::from_num(4));
|
||
/// let max = Wrapping(I16F16::MAX);
|
||
/// assert_eq!(three.mul_add(half, four), Wrapping(I16F16::from_num(5.5)));
|
||
/// assert_eq!(max.mul_add(three, max), max * 4);
|
||
/// ```
|
||
#[inline]
|
||
#[must_use = "this returns the result of the operation, without modifying the original"]
|
||
pub fn mul_add(self, mul: Wrapping<F>, add: Wrapping<F>) -> Wrapping<F> {
|
||
Wrapping(self.0.wrapping_mul_add(mul.0, add.0))
|
||
}
|
||
|
||
/// Adds `self` to the product `a` × `b`.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_add\_prod][FixedI32::wrapping_add_prod]</code>
|
||
/// and
|
||
/// <code>FixedU32::[wrapping\_add\_prod][FixedU32::wrapping_add_prod]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// let half = Wrapping(I16F16::from_num(0.5));
|
||
/// let three = Wrapping(I16F16::from_num(3));
|
||
/// let four = Wrapping(I16F16::from_num(4));
|
||
/// let max = Wrapping(I16F16::MAX);
|
||
/// assert_eq!(four.add_prod(three, half), Wrapping(I16F16::from_num(5.5)));
|
||
/// assert_eq!(max.add_prod(max, three), max * 4);
|
||
/// ```
|
||
#[inline]
|
||
#[must_use]
|
||
pub fn add_prod(self, a: Wrapping<F>, b: Wrapping<F>) -> Wrapping<F> {
|
||
Wrapping(self.0.wrapping_add_prod(a.0, b.0))
|
||
}
|
||
|
||
/// Multiply and accumulate. Adds (`a` × `b`) to `self`.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_mul\_acc][FixedI32::wrapping_mul_acc]</code>
|
||
/// and
|
||
/// <code>FixedU32::[wrapping\_mul\_acc][FixedU32::wrapping_mul_acc]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// let mut acc = Wrapping(I16F16::from_num(3));
|
||
/// acc.mul_acc(Wrapping(I16F16::from_num(4)), Wrapping(I16F16::from_num(0.5)));
|
||
/// assert_eq!(acc, Wrapping(I16F16::from_num(5)));
|
||
///
|
||
/// acc = Wrapping(I16F16::MAX);
|
||
/// acc.mul_acc(Wrapping(I16F16::MAX), Wrapping(I16F16::from_num(3)));
|
||
/// assert_eq!(acc, Wrapping(I16F16::MAX) * 4);
|
||
/// ```
|
||
#[inline]
|
||
pub fn mul_acc(&mut self, a: Wrapping<F>, b: Wrapping<F>) {
|
||
self.0.wrapping_mul_acc(a.0, b.0);
|
||
}
|
||
|
||
/// Euclidean division.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_div\_euclid][FixedI32::wrapping_div_euclid]</code>
|
||
/// and
|
||
/// <code>FixedU32::[wrapping\_div\_euclid][FixedU32::wrapping_div_euclid]</code>.
|
||
///
|
||
/// # Panics
|
||
///
|
||
/// Panics if the divisor is zero.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// let num = Wrapping(I16F16::from_num(7.5));
|
||
/// let den = Wrapping(I16F16::from_num(2));
|
||
/// assert_eq!(num.div_euclid(den), Wrapping(I16F16::from_num(3)));
|
||
/// let quarter = Wrapping(I16F16::from_num(0.25));
|
||
/// let check = (Wrapping(I16F16::MAX) * 4i32).round_to_zero();
|
||
/// assert_eq!(Wrapping(I16F16::MAX).div_euclid(quarter), check);
|
||
/// ```
|
||
#[inline]
|
||
#[track_caller]
|
||
#[must_use = "this returns the result of the operation, without modifying the original"]
|
||
pub fn div_euclid(self, divisor: Wrapping<F>) -> Wrapping<F> {
|
||
Wrapping(self.0.wrapping_div_euclid(divisor.0))
|
||
}
|
||
|
||
/// Remainder for Euclidean division.
|
||
///
|
||
/// See also <code>FixedI32::[rem\_euclid][FixedI32::rem_euclid]</code> and
|
||
/// <code>FixedU32::[rem\_euclid][FixedU32::rem_euclid]</code>.
|
||
///
|
||
/// # Panics
|
||
///
|
||
/// Panics if the divisor is zero.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// let num = Wrapping(I16F16::from_num(7.5));
|
||
/// let den = Wrapping(I16F16::from_num(2));
|
||
/// assert_eq!(num.rem_euclid(den), Wrapping(I16F16::from_num(1.5)));
|
||
/// assert_eq!((-num).rem_euclid(den), Wrapping(I16F16::from_num(0.5)));
|
||
/// ```
|
||
#[inline]
|
||
#[track_caller]
|
||
#[must_use = "this returns the result of the operation, without modifying the original"]
|
||
pub fn rem_euclid(self, divisor: Wrapping<F>) -> Wrapping<F> {
|
||
Wrapping(self.0.rem_euclid(divisor.0))
|
||
}
|
||
|
||
/// Euclidean division by an integer.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_div\_euclid\_int][FixedI32::wrapping_div_euclid_int]</code>
|
||
/// and
|
||
/// <code>FixedU32::[wrapping\_div\_euclid\_int][FixedU32::wrapping_div_euclid_int]</code>.
|
||
///
|
||
/// # Panics
|
||
///
|
||
/// Panics if the divisor is zero.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// let num = Wrapping(I16F16::from_num(7.5));
|
||
/// assert_eq!(num.div_euclid_int(2), Wrapping(I16F16::from_num(3)));
|
||
/// let min = Wrapping(I16F16::MIN);
|
||
/// assert_eq!(min.div_euclid_int(-1), min);
|
||
/// ```
|
||
#[inline]
|
||
#[track_caller]
|
||
#[must_use = "this returns the result of the operation, without modifying the original"]
|
||
pub fn div_euclid_int(self, divisor: F::Bits) -> Wrapping<F> {
|
||
Wrapping(self.0.wrapping_div_euclid_int(divisor))
|
||
}
|
||
|
||
/// Remainder for Euclidean division.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_rem\_euclid\_int][FixedI32::wrapping_rem_euclid_int]</code>
|
||
/// and
|
||
/// <code>FixedU32::[wrapping\_rem\_euclid\_int][FixedU32::wrapping_rem_euclid_int]</code>.
|
||
///
|
||
/// # Panics
|
||
///
|
||
/// Panics if the divisor is zero.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// let num = Wrapping(I16F16::from_num(7.5));
|
||
/// assert_eq!(num.rem_euclid_int(2), Wrapping(I16F16::from_num(1.5)));
|
||
/// assert_eq!((-num).rem_euclid_int(2), Wrapping(I16F16::from_num(0.5)));
|
||
/// ```
|
||
#[inline]
|
||
#[track_caller]
|
||
#[must_use = "this returns the result of the operation, without modifying the original"]
|
||
pub fn rem_euclid_int(self, divisor: F::Bits) -> Wrapping<F> {
|
||
Wrapping(self.0.wrapping_rem_euclid_int(divisor))
|
||
}
|
||
|
||
/// Unbounded shift left. Computes `self << rhs`, without bounding the value
|
||
/// of `rhs`.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[unbounded\_shl][FixedI32::unbounded_shl]</code> and
|
||
/// <code>FixedU32::[unbounded\_shl][FixedU32::unbounded_shl]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// type Wr = Wrapping<I16F16>;
|
||
/// let num = Wrapping(I16F16::from_num(1.5));
|
||
/// assert_eq!(num.unbounded_shl(5), num << 5);
|
||
/// assert_eq!(num.unbounded_shl(32), Wr::ZERO);
|
||
/// ```
|
||
#[must_use = "this returns the result of the operation, without modifying the original"]
|
||
#[inline]
|
||
pub fn unbounded_shl(self, rhs: u32) -> Wrapping<F> {
|
||
Wrapping(self.0.unbounded_shl(rhs))
|
||
}
|
||
|
||
/// Unbounded shift right. Computes `self >> rhs`, without bounding the
|
||
/// value of `rhs`.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[unbounded\_shr][FixedI32::unbounded_shr]</code> and
|
||
/// <code>FixedU32::[unbounded\_shr][FixedU32::unbounded_shr]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// type Wr = Wrapping<I16F16>;
|
||
/// let num = Wrapping(I16F16::from_num(1.5));
|
||
/// assert_eq!(num.unbounded_shr(5), num >> 5);
|
||
/// assert_eq!(num.unbounded_shr(32), Wr::ZERO);
|
||
/// assert_eq!((-num).unbounded_shr(5), (-num) >> 5);
|
||
/// assert_eq!((-num).unbounded_shr(32), -Wr::DELTA);
|
||
/// ```
|
||
#[must_use = "this returns the result of the operation, without modifying the original"]
|
||
#[inline]
|
||
pub fn unbounded_shr(self, rhs: u32) -> Wrapping<F> {
|
||
Wrapping(self.0.unbounded_shr(rhs))
|
||
}
|
||
|
||
/// Linear interpolation between `start` and `end`.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_lerp][FixedI32::wrapping_lerp]</code> and
|
||
/// <code>FixedU32::[wrapping\_lerp][FixedU32::wrapping_lerp]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// type Wr = Wrapping<I16F16>;
|
||
/// assert_eq!(Wr::from_num(0.5).lerp(Wr::ZERO, Wr::MAX), Wr::MAX / 2);
|
||
/// assert_eq!(Wr::from_num(1.5).lerp(Wr::ZERO, Wr::MAX), Wr::MAX + Wr::MAX / 2);
|
||
/// ```
|
||
#[inline]
|
||
#[must_use]
|
||
pub fn lerp(self, start: Wrapping<F>, end: Wrapping<F>) -> Wrapping<F> {
|
||
Wrapping(self.0.wrapping_lerp(start.0, end.0))
|
||
}
|
||
|
||
/// Inverse linear interpolation between `start` and `end`.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_inv\_lerp][FixedI32::wrapping_inv_lerp]</code> and
|
||
/// <code>FixedU32::[wrapping\_inv\_lerp][FixedU32::wrapping_inv_lerp]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// type Wr = Wrapping<I16F16>;
|
||
/// assert_eq!(
|
||
/// Wr::from_num(25).inv_lerp(Wr::from_num(20), Wr::from_num(40)),
|
||
/// Wr::from_num(0.25)
|
||
/// );
|
||
/// ```
|
||
#[inline]
|
||
#[must_use]
|
||
pub fn inv_lerp(self, start: Wrapping<F>, end: Wrapping<F>) -> Wrapping<F> {
|
||
Wrapping(self.0.wrapping_inv_lerp(start.0, end.0))
|
||
}
|
||
|
||
/// Wrapping round. Rounds to the next integer to the nearest, with ties
|
||
/// rounded to even, and wrapping on overflow.
|
||
#[inline]
|
||
#[must_use]
|
||
#[deprecated(since = "1.28.0", note = "renamed to `round_ties_even`")]
|
||
pub fn round_ties_to_even(self) -> Wrapping<F> {
|
||
self.round_ties_even()
|
||
}
|
||
}
|
||
|
||
impl<F: FixedSigned> Wrapping<F> {
|
||
/// Returns the bit pattern of `self` reinterpreted as an unsigned
|
||
/// fixed-point number of the same size.
|
||
///
|
||
/// See also <code>FixedI32::[cast\_unsigned][FixedU32::cast_unsigned]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::{I16F16, U16F16};
|
||
/// use fixed::Wrapping;
|
||
///
|
||
/// let n = Wrapping(-I16F16::DELTA);
|
||
/// assert_eq!(n.cast_unsigned(), Wrapping(U16F16::MAX));
|
||
/// ```
|
||
#[must_use]
|
||
#[inline]
|
||
pub fn cast_unsigned(self) -> Wrapping<F::Unsigned> {
|
||
Wrapping(self.0.cast_unsigned())
|
||
}
|
||
|
||
/// Returns the number of bits required to represent the value.
|
||
///
|
||
/// The number of bits required includes an initial one for
|
||
/// negative numbers, and an initial zero for non-negative
|
||
/// numbers.
|
||
///
|
||
/// See also <code>FixedI32::[signed\_bits][FixedI32::signed_bits]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I4F4;
|
||
/// use fixed::Wrapping;
|
||
/// assert_eq!(Wrapping(I4F4::from_num(-3)).signed_bits(), 7); // “_101.0000”
|
||
/// assert_eq!(Wrapping(I4F4::from_num(-1)).signed_bits(), 5); // “___1.0000”
|
||
/// assert_eq!(Wrapping(I4F4::from_num(-0.0625)).signed_bits(), 1); // “____.___1”
|
||
/// assert_eq!(Wrapping(I4F4::from_num(0)).signed_bits(), 1); // “____.___0”
|
||
/// assert_eq!(Wrapping(I4F4::from_num(0.0625)).signed_bits(), 2); // “____.__01”
|
||
/// assert_eq!(Wrapping(I4F4::from_num(1)).signed_bits(), 6); // “__01.0000”
|
||
/// assert_eq!(Wrapping(I4F4::from_num(3)).signed_bits(), 7); // “_011.0000”
|
||
/// ```
|
||
#[inline]
|
||
pub fn signed_bits(self) -> u32 {
|
||
self.0.signed_bits()
|
||
}
|
||
|
||
/// Returns [`true`] if the number is > 0.
|
||
///
|
||
/// See also <code>FixedI32::[is\_positive][FixedI32::is_positive]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// assert!(Wrapping(I16F16::from_num(4.3)).is_positive());
|
||
/// assert!(!Wrapping(I16F16::ZERO).is_positive());
|
||
/// assert!(!Wrapping(I16F16::from_num(-4.3)).is_positive());
|
||
/// ```
|
||
#[inline]
|
||
pub fn is_positive(self) -> bool {
|
||
self.0.is_positive()
|
||
}
|
||
|
||
/// Returns [`true`] if the number is < 0.
|
||
///
|
||
/// See also <code>FixedI32::[is\_negative][FixedI32::is_negative]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// assert!(!Wrapping(I16F16::from_num(4.3)).is_negative());
|
||
/// assert!(!Wrapping(I16F16::ZERO).is_negative());
|
||
/// assert!(Wrapping(I16F16::from_num(-4.3)).is_negative());
|
||
/// ```
|
||
#[inline]
|
||
pub fn is_negative(self) -> bool {
|
||
self.0.is_negative()
|
||
}
|
||
|
||
/// Wrapping absolute value. Returns the absolute value, wrapping
|
||
/// on overflow.
|
||
///
|
||
/// Overflow can only occur when trying to find the absolute value
|
||
/// of the minimum value.
|
||
///
|
||
/// See also <code>FixedI32::[wrapping\_abs][FixedI32::wrapping_abs]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::I16F16;
|
||
/// use fixed::Wrapping;
|
||
/// assert_eq!(Wrapping(I16F16::from_num(-5)).abs(), Wrapping(I16F16::from_num(5)));
|
||
/// assert_eq!(Wrapping(I16F16::MIN).abs(), Wrapping(I16F16::MIN));
|
||
/// ```
|
||
#[inline]
|
||
#[must_use]
|
||
pub fn abs(self) -> Wrapping<F> {
|
||
Wrapping(self.0.wrapping_abs())
|
||
}
|
||
|
||
/// Returns a number representing the sign of `self`.
|
||
///
|
||
/// # Warning
|
||
///
|
||
/// Using this method when 1 and −1 cannot be represented is
|
||
/// almost certainly a bug, however, this is allowed and gives the
|
||
/// following wrapped results.
|
||
///
|
||
/// * When there are no integer bits, for example for the type
|
||
/// <code>[Wrapping]<[I0F16]></code>, the return value
|
||
/// is always zero.
|
||
/// * When there is one integer bit, for example for the type
|
||
/// <code>[Wrapping]<[I1F15]></code>, the return value
|
||
/// is zero when `self` is zero, and −1 otherwise. This means
|
||
/// that for a positive number, −1 is returned, because +1
|
||
/// does not fit and is wrapped to −1.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_signum][FixedI32::wrapping_signum]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::{I0F32, I1F31, I16F16};
|
||
/// use fixed::Wrapping;
|
||
///
|
||
/// assert_eq!(Wrapping(<I16F16>::from_num(-3.9)).signum(), Wrapping(I16F16::NEG_ONE));
|
||
/// assert_eq!(Wrapping(<I16F16>::ZERO).signum(), Wrapping(I16F16::ZERO));
|
||
/// assert_eq!(Wrapping(<I16F16>::from_num(3.9)).signum(), Wrapping(I16F16::ONE));
|
||
///
|
||
/// assert_eq!(Wrapping(<I1F31>::from_num(0.5)).signum(), Wrapping(I1F31::NEG_ONE));
|
||
/// assert_eq!(Wrapping(<I0F32>::from_num(0.25)).signum(), Wrapping(I0F32::ZERO));
|
||
/// assert_eq!(Wrapping(<I0F32>::from_num(-0.5)).signum(), Wrapping(I0F32::ZERO));
|
||
/// ```
|
||
///
|
||
/// [I0F16]: crate::types::I0F16
|
||
/// [I1F15]: crate::types::I1F15
|
||
#[inline]
|
||
#[must_use]
|
||
pub fn signum(self) -> Wrapping<F> {
|
||
Wrapping(self.0.wrapping_signum())
|
||
}
|
||
|
||
/// Addition with an unsigned fixed-point number.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_add\_unsigned][FixedI32::wrapping_add_unsigned]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::{I16F16, U16F16};
|
||
/// use fixed::Wrapping;
|
||
/// assert_eq!(
|
||
/// Wrapping::<I16F16>::from_num(-5).add_unsigned(U16F16::from_num(3)),
|
||
/// Wrapping::<I16F16>::from_num(-2)
|
||
/// );
|
||
/// assert_eq!(
|
||
/// Wrapping::<I16F16>::ZERO.add_unsigned(U16F16::MAX),
|
||
/// -Wrapping::<I16F16>::DELTA
|
||
/// );
|
||
/// ```
|
||
#[inline]
|
||
#[must_use]
|
||
pub fn add_unsigned(self, rhs: F::Unsigned) -> Wrapping<F> {
|
||
Wrapping(self.0.wrapping_add_unsigned(rhs))
|
||
}
|
||
|
||
/// Subtraction with an unsigned fixed-point number.
|
||
///
|
||
/// See also
|
||
/// <code>FixedI32::[wrapping\_sub\_unsigned][FixedI32::wrapping_sub_unsigned]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::{I16F16, U16F16};
|
||
/// use fixed::Wrapping;
|
||
/// assert_eq!(
|
||
/// Wrapping::<I16F16>::from_num(3).sub_unsigned(U16F16::from_num(5)),
|
||
/// Wrapping::<I16F16>::from_num(-2)
|
||
/// );
|
||
/// assert_eq!(
|
||
/// Wrapping::<I16F16>::ZERO.sub_unsigned(U16F16::MAX),
|
||
/// Wrapping::<I16F16>::DELTA
|
||
/// );
|
||
/// ```
|
||
#[inline]
|
||
#[must_use]
|
||
pub fn sub_unsigned(self, rhs: F::Unsigned) -> Wrapping<F> {
|
||
Wrapping(self.0.wrapping_sub_unsigned(rhs))
|
||
}
|
||
}
|
||
|
||
impl<F: FixedUnsigned> Wrapping<F> {
|
||
/// Returns the bit pattern of `self` reinterpreted as a signed fixed-point
|
||
/// number of the same size.
|
||
///
|
||
/// See also <code>FixedU32::[cast\_signed][FixedU32::cast_signed]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::{I16F16, U16F16};
|
||
/// use fixed::Wrapping;
|
||
///
|
||
/// let n = Wrapping(U16F16::MAX);
|
||
/// assert_eq!(n.cast_signed(), Wrapping(-I16F16::DELTA));
|
||
/// ```
|
||
#[must_use]
|
||
#[inline]
|
||
pub fn cast_signed(self) -> Wrapping<F::Signed> {
|
||
Wrapping(self.0.cast_signed())
|
||
}
|
||
|
||
/// Returns the number of bits required to represent the value.
|
||
///
|
||
/// See also
|
||
/// <code>FixedU32::[significant\_bits][FixedU32::significant_bits]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::U4F4;
|
||
/// use fixed::Wrapping;
|
||
/// assert_eq!(Wrapping(U4F4::from_num(0)).significant_bits(), 0); // “____.____”
|
||
/// assert_eq!(Wrapping(U4F4::from_num(0.0625)).significant_bits(), 1); // “____.___1”
|
||
/// assert_eq!(Wrapping(U4F4::from_num(1)).significant_bits(), 5); // “___1.0000”
|
||
/// assert_eq!(Wrapping(U4F4::from_num(3)).significant_bits(), 6); // “__11.0000”
|
||
/// ```
|
||
#[inline]
|
||
pub fn significant_bits(self) -> u32 {
|
||
self.0.significant_bits()
|
||
}
|
||
|
||
/// Returns [`true`] if the fixed-point number is
|
||
/// 2<sup><i>k</i></sup> for some integer <i>k</i>.
|
||
///
|
||
/// See also
|
||
/// <code>FixedU32::[is\_power\_of\_two][FixedU32::is_power_of_two]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::U16F16;
|
||
/// use fixed::Wrapping;
|
||
/// assert!(Wrapping(U16F16::from_num(0.5)).is_power_of_two());
|
||
/// assert!(Wrapping(U16F16::from_num(4)).is_power_of_two());
|
||
/// assert!(!Wrapping(U16F16::from_num(5)).is_power_of_two());
|
||
/// ```
|
||
#[inline]
|
||
pub fn is_power_of_two(self) -> bool {
|
||
self.0.is_power_of_two()
|
||
}
|
||
|
||
/// Returns the highest one in the binary representation, or zero
|
||
/// if `self` is zero.
|
||
///
|
||
/// If `self` > 0, the highest one is equal to the largest power
|
||
/// of two that is ≤ `self`.
|
||
///
|
||
/// See also <code>FixedU32::[highest\_one][FixedU32::highest_one]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::U16F16;
|
||
/// use fixed::Wrapping;
|
||
/// type T = Wrapping<U16F16>;
|
||
/// assert_eq!(T::from_bits(0b11_0010).highest_one(), T::from_bits(0b10_0000));
|
||
/// assert_eq!(T::from_num(0.3).highest_one(), T::from_num(0.25));
|
||
/// assert_eq!(T::from_num(4).highest_one(), T::from_num(4));
|
||
/// assert_eq!(T::from_num(6.5).highest_one(), T::from_num(4));
|
||
/// assert_eq!(T::ZERO.highest_one(), T::ZERO);
|
||
/// ```
|
||
#[inline]
|
||
#[must_use]
|
||
pub fn highest_one(self) -> Wrapping<F> {
|
||
Wrapping(self.0.highest_one())
|
||
}
|
||
|
||
/// Returns the smallest power of two that is ≥ `self`.
|
||
///
|
||
/// If the next power of two is too large to fit, it is wrapped to zero.
|
||
///
|
||
/// See also
|
||
/// <code>FixedU32::[wrapping\_next\_power\_of\_two][FixedU32::wrapping_next_power_of_two]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::U16F16;
|
||
/// use fixed::Wrapping;
|
||
/// type T = Wrapping<U16F16>;
|
||
/// assert_eq!(T::from_bits(0b11_0010).next_power_of_two(), T::from_bits(0b100_0000));
|
||
/// assert_eq!(T::from_num(0.3).next_power_of_two(), T::from_num(0.5));
|
||
/// assert_eq!(T::from_num(4).next_power_of_two(), T::from_num(4));
|
||
/// assert_eq!(T::from_num(6.5).next_power_of_two(), T::from_num(8));
|
||
/// // if the next power of two is too large, it is wrapped to zero
|
||
/// assert_eq!(T::MAX.next_power_of_two(), T::ZERO);
|
||
/// ```
|
||
#[inline]
|
||
#[must_use]
|
||
pub fn next_power_of_two(self) -> Wrapping<F> {
|
||
Wrapping(self.0.wrapping_next_power_of_two())
|
||
}
|
||
|
||
/// Addition with an signed fixed-point number.
|
||
///
|
||
/// See also
|
||
/// <code>FixedU32::[wrapping\_add\_signed][FixedU32::wrapping_add_signed]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::{I16F16, U16F16};
|
||
/// use fixed::Wrapping;
|
||
/// assert_eq!(
|
||
/// Wrapping::<U16F16>::from_num(5).add_signed(I16F16::from_num(-3)),
|
||
/// Wrapping::<U16F16>::from_num(2)
|
||
/// );
|
||
/// assert_eq!(
|
||
/// Wrapping::<U16F16>::ZERO.add_signed(-I16F16::DELTA),
|
||
/// Wrapping::<U16F16>::MAX
|
||
/// );
|
||
/// ```
|
||
#[inline]
|
||
#[must_use]
|
||
pub fn add_signed(self, rhs: F::Signed) -> Wrapping<F> {
|
||
Wrapping(self.0.wrapping_add_signed(rhs))
|
||
}
|
||
|
||
/// Subtraction with an signed fixed-point number.
|
||
///
|
||
/// See also
|
||
/// <code>FixedU32::[wrapping\_sub\_signed][FixedU32::wrapping_sub_signed]</code>.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```rust
|
||
/// use fixed::types::{I16F16, U16F16};
|
||
/// use fixed::Wrapping;
|
||
/// assert_eq!(
|
||
/// Wrapping::<U16F16>::from_num(5).sub_signed(I16F16::from_num(-3)),
|
||
/// Wrapping::<U16F16>::from_num(8)
|
||
/// );
|
||
/// assert_eq!(
|
||
/// Wrapping::<U16F16>::ZERO.sub_signed(I16F16::DELTA),
|
||
/// Wrapping::<U16F16>::MAX
|
||
/// );
|
||
/// ```
|
||
#[inline]
|
||
#[must_use]
|
||
pub fn sub_signed(self, rhs: F::Signed) -> Wrapping<F> {
|
||
Wrapping(self.0.wrapping_sub_signed(rhs))
|
||
}
|
||
}
|
||
|
||
impl<F: Fixed> Display for Wrapping<F> {
|
||
#[inline]
|
||
fn fmt(&self, f: &mut Formatter) -> FmtResult {
|
||
Display::fmt(&self.0, f)
|
||
}
|
||
}
|
||
|
||
impl<F: Fixed> Debug for Wrapping<F> {
|
||
#[inline]
|
||
fn fmt(&self, f: &mut Formatter) -> FmtResult {
|
||
Debug::fmt(&self.0, f)
|
||
}
|
||
}
|
||
|
||
impl<F: Fixed> Binary for Wrapping<F> {
|
||
#[inline]
|
||
fn fmt(&self, f: &mut Formatter) -> FmtResult {
|
||
Binary::fmt(&self.0, f)
|
||
}
|
||
}
|
||
|
||
impl<F: Fixed> Octal for Wrapping<F> {
|
||
#[inline]
|
||
fn fmt(&self, f: &mut Formatter) -> FmtResult {
|
||
Octal::fmt(&self.0, f)
|
||
}
|
||
}
|
||
|
||
impl<F: Fixed> LowerHex for Wrapping<F> {
|
||
#[inline]
|
||
fn fmt(&self, f: &mut Formatter) -> FmtResult {
|
||
LowerHex::fmt(&self.0, f)
|
||
}
|
||
}
|
||
|
||
impl<F: Fixed> UpperHex for Wrapping<F> {
|
||
#[inline]
|
||
fn fmt(&self, f: &mut Formatter) -> FmtResult {
|
||
UpperHex::fmt(&self.0, f)
|
||
}
|
||
}
|
||
|
||
impl<F: Fixed> LowerExp for Wrapping<F> {
|
||
#[inline]
|
||
fn fmt(&self, f: &mut Formatter) -> FmtResult {
|
||
LowerExp::fmt(&self.0, f)
|
||
}
|
||
}
|
||
|
||
impl<F: Fixed> UpperExp for Wrapping<F> {
|
||
#[inline]
|
||
fn fmt(&self, f: &mut Formatter) -> FmtResult {
|
||
UpperExp::fmt(&self.0, f)
|
||
}
|
||
}
|
||
|
||
impl<F: Fixed> From<F> for Wrapping<F> {
|
||
/// Wraps a fixed-point number.
|
||
#[inline]
|
||
fn from(src: F) -> Wrapping<F> {
|
||
Wrapping(src)
|
||
}
|
||
}
|
||
|
||
impl<F: Fixed> FromStr for Wrapping<F> {
|
||
type Err = ParseFixedError;
|
||
/// Parses a string slice containing decimal digits to return a fixed-point number.
|
||
///
|
||
/// Rounding is to the nearest, with ties rounded to even.
|
||
#[inline]
|
||
fn from_str(s: &str) -> Result<Self, Self::Err> {
|
||
F::wrapping_from_str(s).map(Wrapping)
|
||
}
|
||
}
|
||
|
||
macro_rules! op {
|
||
($wrapping:ident, $Op:ident $op:ident, $OpAssign:ident $op_assign:ident) => {
|
||
impl<F: Fixed> $Op<Wrapping<F>> for Wrapping<F> {
|
||
type Output = Wrapping<F>;
|
||
#[inline]
|
||
fn $op(self, other: Wrapping<F>) -> Wrapping<F> {
|
||
Wrapping((self.0).$wrapping(other.0))
|
||
}
|
||
}
|
||
impl<F: Fixed> $Op<Wrapping<F>> for &Wrapping<F> {
|
||
type Output = Wrapping<F>;
|
||
#[inline]
|
||
fn $op(self, other: Wrapping<F>) -> Wrapping<F> {
|
||
Wrapping((self.0).$wrapping(other.0))
|
||
}
|
||
}
|
||
impl<F: Fixed> $Op<&Wrapping<F>> for Wrapping<F> {
|
||
type Output = Wrapping<F>;
|
||
#[inline]
|
||
fn $op(self, other: &Wrapping<F>) -> Wrapping<F> {
|
||
Wrapping((self.0).$wrapping(other.0))
|
||
}
|
||
}
|
||
impl<F: Fixed> $Op<&Wrapping<F>> for &Wrapping<F> {
|
||
type Output = Wrapping<F>;
|
||
#[inline]
|
||
fn $op(self, other: &Wrapping<F>) -> Wrapping<F> {
|
||
Wrapping((self.0).$wrapping(other.0))
|
||
}
|
||
}
|
||
impl<F: Fixed> $OpAssign<Wrapping<F>> for Wrapping<F> {
|
||
#[inline]
|
||
fn $op_assign(&mut self, other: Wrapping<F>) {
|
||
self.0 = (self.0).$wrapping(other.0);
|
||
}
|
||
}
|
||
impl<F: Fixed> $OpAssign<&Wrapping<F>> for Wrapping<F> {
|
||
#[inline]
|
||
fn $op_assign(&mut self, other: &Wrapping<F>) {
|
||
self.0 = (self.0).$wrapping(other.0);
|
||
}
|
||
}
|
||
impl<F: Fixed> $OpAssign<F> for Wrapping<F> {
|
||
#[inline]
|
||
fn $op_assign(&mut self, other: F) {
|
||
self.0 = (self.0).$wrapping(other);
|
||
}
|
||
}
|
||
impl<F: Fixed> $OpAssign<&F> for Wrapping<F> {
|
||
#[inline]
|
||
fn $op_assign(&mut self, other: &F) {
|
||
self.0 = (self.0).$wrapping(*other);
|
||
}
|
||
}
|
||
};
|
||
}
|
||
|
||
macro_rules! op_bitwise {
|
||
($Op:ident $op:ident, $OpAssign:ident $op_assign:ident) => {
|
||
impl<F> $Op<Wrapping<F>> for Wrapping<F>
|
||
where
|
||
F: $Op<F, Output = F>,
|
||
{
|
||
type Output = Wrapping<F>;
|
||
#[inline]
|
||
fn $op(self, other: Wrapping<F>) -> Wrapping<F> {
|
||
Wrapping((self.0).$op(other.0))
|
||
}
|
||
}
|
||
impl<F> $Op<Wrapping<F>> for &Wrapping<F>
|
||
where
|
||
for<'a> &'a F: $Op<F, Output = F>,
|
||
{
|
||
type Output = Wrapping<F>;
|
||
#[inline]
|
||
fn $op(self, other: Wrapping<F>) -> Wrapping<F> {
|
||
Wrapping((self.0).$op(other.0))
|
||
}
|
||
}
|
||
impl<F> $Op<&Wrapping<F>> for Wrapping<F>
|
||
where
|
||
for<'a> F: $Op<&'a F, Output = F>,
|
||
{
|
||
type Output = Wrapping<F>;
|
||
#[inline]
|
||
fn $op(self, other: &Wrapping<F>) -> Wrapping<F> {
|
||
Wrapping((self.0).$op(&other.0))
|
||
}
|
||
}
|
||
impl<F> $Op<&Wrapping<F>> for &Wrapping<F>
|
||
where
|
||
for<'a, 'b> &'a F: $Op<&'b F, Output = F>,
|
||
{
|
||
type Output = Wrapping<F>;
|
||
#[inline]
|
||
fn $op(self, other: &Wrapping<F>) -> Wrapping<F> {
|
||
Wrapping((self.0).$op(&other.0))
|
||
}
|
||
}
|
||
impl<F> $OpAssign<Wrapping<F>> for Wrapping<F>
|
||
where
|
||
F: $OpAssign<F>,
|
||
{
|
||
#[inline]
|
||
fn $op_assign(&mut self, other: Wrapping<F>) {
|
||
(self.0).$op_assign(other.0);
|
||
}
|
||
}
|
||
impl<F> $OpAssign<&Wrapping<F>> for Wrapping<F>
|
||
where
|
||
for<'a> F: $OpAssign<&'a F>,
|
||
{
|
||
#[inline]
|
||
fn $op_assign(&mut self, other: &Wrapping<F>) {
|
||
(self.0).$op_assign(&other.0);
|
||
}
|
||
}
|
||
impl<F> $OpAssign<F> for Wrapping<F>
|
||
where
|
||
F: $OpAssign<F>,
|
||
{
|
||
#[inline]
|
||
fn $op_assign(&mut self, other: F) {
|
||
(self.0).$op_assign(other);
|
||
}
|
||
}
|
||
impl<F> $OpAssign<&F> for Wrapping<F>
|
||
where
|
||
for<'a> F: $OpAssign<&'a F>,
|
||
{
|
||
#[inline]
|
||
fn $op_assign(&mut self, other: &F) {
|
||
(self.0).$op_assign(other);
|
||
}
|
||
}
|
||
};
|
||
}
|
||
|
||
macro_rules! op_shift {
|
||
(
|
||
$Op:ident $op:ident, $OpAssign:ident $op_assign:ident;
|
||
$($Rhs:ident),*
|
||
) => { $(
|
||
impl<F> $Op<$Rhs> for Wrapping<F>
|
||
where
|
||
F: $Op<u32, Output = F>,
|
||
{
|
||
type Output = Wrapping<F>;
|
||
#[inline]
|
||
fn $op(self, other: $Rhs) -> Wrapping<F> {
|
||
let nbits = size_of::<F>() as u32 * 8;
|
||
Wrapping((self.0).$op(other as u32 % nbits))
|
||
}
|
||
}
|
||
impl<F> $Op<$Rhs> for &Wrapping<F>
|
||
where
|
||
for<'a> &'a F: $Op<u32, Output = F>,
|
||
{
|
||
type Output = Wrapping<F>;
|
||
#[inline]
|
||
fn $op(self, other: $Rhs) -> Wrapping<F> {
|
||
let nbits = size_of::<F>() as u32 * 8;
|
||
Wrapping((self.0).$op(other as u32 % nbits))
|
||
}
|
||
}
|
||
impl<F> $Op<&$Rhs> for Wrapping<F>
|
||
where
|
||
F: $Op<u32, Output = F>,
|
||
{
|
||
type Output = Wrapping<F>;
|
||
#[inline]
|
||
fn $op(self, other: &$Rhs) -> Wrapping<F> {
|
||
let nbits = size_of::<F>() as u32 * 8;
|
||
Wrapping((self.0).$op(*other as u32 % nbits))
|
||
}
|
||
}
|
||
impl<F> $Op<&$Rhs> for &Wrapping<F>
|
||
where
|
||
for<'a> &'a F: $Op<u32, Output = F>,
|
||
{
|
||
type Output = Wrapping<F>;
|
||
#[inline]
|
||
fn $op(self, other: &$Rhs) -> Wrapping<F> {
|
||
let nbits = size_of::<F>() as u32 * 8;
|
||
Wrapping((self.0).$op(*other as u32 % nbits))
|
||
}
|
||
}
|
||
impl<F> $OpAssign<$Rhs> for Wrapping<F>
|
||
where
|
||
F: $OpAssign<u32>,
|
||
{
|
||
#[inline]
|
||
fn $op_assign(&mut self, other: $Rhs) {
|
||
let nbits = size_of::<F>() as u32 * 8;
|
||
(self.0).$op_assign(other as u32 % nbits);
|
||
}
|
||
}
|
||
impl<F> $OpAssign<&$Rhs> for Wrapping<F>
|
||
where
|
||
F: $OpAssign<u32>,
|
||
{
|
||
#[inline]
|
||
fn $op_assign(&mut self, other: &$Rhs) {
|
||
let nbits = size_of::<F>() as u32 * 8;
|
||
(self.0).$op_assign(*other as u32 % nbits);
|
||
}
|
||
}
|
||
)* };
|
||
}
|
||
|
||
impl<F: Fixed> Neg for Wrapping<F> {
|
||
type Output = Wrapping<F>;
|
||
#[inline]
|
||
fn neg(self) -> Wrapping<F> {
|
||
Wrapping((self.0).wrapping_neg())
|
||
}
|
||
}
|
||
|
||
impl<F: Fixed> Neg for &Wrapping<F> {
|
||
type Output = Wrapping<F>;
|
||
#[inline]
|
||
fn neg(self) -> Wrapping<F> {
|
||
Wrapping((self.0).wrapping_neg())
|
||
}
|
||
}
|
||
op! { wrapping_add, Add add, AddAssign add_assign }
|
||
op! { wrapping_sub, Sub sub, SubAssign sub_assign }
|
||
op! { wrapping_mul, Mul mul, MulAssign mul_assign }
|
||
op! { wrapping_div, Div div, DivAssign div_assign }
|
||
op! { rem, Rem rem, RemAssign rem_assign }
|
||
|
||
impl<F> Not for Wrapping<F>
|
||
where
|
||
F: Not<Output = F>,
|
||
{
|
||
type Output = Wrapping<F>;
|
||
#[inline]
|
||
fn not(self) -> Wrapping<F> {
|
||
Wrapping((self.0).not())
|
||
}
|
||
}
|
||
impl<F> Not for &Wrapping<F>
|
||
where
|
||
for<'a> &'a F: Not<Output = F>,
|
||
{
|
||
type Output = Wrapping<F>;
|
||
#[inline]
|
||
fn not(self) -> Wrapping<F> {
|
||
Wrapping((self.0).not())
|
||
}
|
||
}
|
||
op_bitwise! { BitAnd bitand, BitAndAssign bitand_assign }
|
||
op_bitwise! { BitOr bitor, BitOrAssign bitor_assign }
|
||
op_bitwise! { BitXor bitxor, BitXorAssign bitxor_assign }
|
||
|
||
op_shift! {
|
||
Shl shl, ShlAssign shl_assign;
|
||
i8, i16, i32, i64, i128, isize, u8, u16, u32, u64, u128, usize
|
||
}
|
||
op_shift! {
|
||
Shr shr, ShrAssign shr_assign;
|
||
i8, i16, i32, i64, i128, isize, u8, u16, u32, u64, u128, usize
|
||
}
|
||
|
||
impl<F: Fixed> Sum<Wrapping<F>> for Wrapping<F> {
|
||
fn sum<I>(iter: I) -> Wrapping<F>
|
||
where
|
||
I: Iterator<Item = Wrapping<F>>,
|
||
{
|
||
iter.fold(Wrapping(F::ZERO), Add::add)
|
||
}
|
||
}
|
||
|
||
impl<'a, F: 'a + Fixed> Sum<&'a Wrapping<F>> for Wrapping<F> {
|
||
fn sum<I>(iter: I) -> Wrapping<F>
|
||
where
|
||
I: Iterator<Item = &'a Wrapping<F>>,
|
||
{
|
||
iter.fold(Wrapping(F::ZERO), Add::add)
|
||
}
|
||
}
|
||
|
||
impl<F: Fixed> Product<Wrapping<F>> for Wrapping<F> {
|
||
fn product<I>(mut iter: I) -> Wrapping<F>
|
||
where
|
||
I: Iterator<Item = Wrapping<F>>,
|
||
{
|
||
match iter.next() {
|
||
None => Wrapping(1.wrapping_to_fixed()),
|
||
Some(first) => iter.fold(first, Mul::mul),
|
||
}
|
||
}
|
||
}
|
||
|
||
impl<'a, F: 'a + Fixed> Product<&'a Wrapping<F>> for Wrapping<F> {
|
||
fn product<I>(mut iter: I) -> Wrapping<F>
|
||
where
|
||
I: Iterator<Item = &'a Wrapping<F>>,
|
||
{
|
||
match iter.next() {
|
||
None => Wrapping(1.wrapping_to_fixed()),
|
||
Some(first) => iter.fold(*first, Mul::mul),
|
||
}
|
||
}
|
||
}
|
||
|
||
// The following cannot be implemented for Wrapping<F> where F: Fixed,
|
||
// otherwise there will be a conflicting implementation error. For
|
||
// example we cannot implement both these without triggering E0119:
|
||
//
|
||
// impl<F: Fixed> Op<F::Bits> for Wrapping<F> { /* ... */ }
|
||
// impl<F: Fixed> Op<&F::Bits> for Wrapping<F> { /* ... */ }
|
||
//
|
||
// To work around this, we provide implementations like this:
|
||
//
|
||
// impl<Frac> Op<i8> for Wrapping<FixedI8<Frac>> { /* ... */ }
|
||
// impl<Frac> Op<&i8> for Wrapping<FixedI8<Frac>> { /* ... */ }
|
||
// impl<Frac> Op<i16> for Wrapping<FixedI16<Frac>> { /* ... */ }
|
||
// impl<Frac> Op<&i16> for Wrapping<FixedI16<Frac>> { /* ... */ }
|
||
// ...
|
||
|
||
macro_rules! op_bits {
|
||
(
|
||
$Fixed:ident($Bits:ident $(, $LeEqU:ident)*)::$wrapping:ident,
|
||
$Op:ident $op:ident,
|
||
$OpAssign:ident $op_assign:ident
|
||
) => {
|
||
impl<Frac $(: $LeEqU)*> $Op<$Bits> for Wrapping<$Fixed<Frac>> {
|
||
type Output = Wrapping<$Fixed<Frac>>;
|
||
#[inline]
|
||
fn $op(self, other: $Bits) -> Wrapping<$Fixed<Frac>> {
|
||
Wrapping((self.0).$wrapping(other))
|
||
}
|
||
}
|
||
impl<Frac $(: $LeEqU)*> $Op<$Bits> for &Wrapping<$Fixed<Frac>> {
|
||
type Output = Wrapping<$Fixed<Frac>>;
|
||
#[inline]
|
||
fn $op(self, other: $Bits) -> Wrapping<$Fixed<Frac>> {
|
||
Wrapping((self.0).$wrapping(other))
|
||
}
|
||
}
|
||
impl<Frac $(: $LeEqU)*> $Op<&$Bits> for Wrapping<$Fixed<Frac>> {
|
||
type Output = Wrapping<$Fixed<Frac>>;
|
||
#[inline]
|
||
fn $op(self, other: &$Bits) -> Wrapping<$Fixed<Frac>> {
|
||
Wrapping((self.0).$wrapping(*other))
|
||
}
|
||
}
|
||
impl<Frac $(: $LeEqU)*> $Op<&$Bits> for &Wrapping<$Fixed<Frac>> {
|
||
type Output = Wrapping<$Fixed<Frac>>;
|
||
#[inline]
|
||
fn $op(self, other: &$Bits) -> Wrapping<$Fixed<Frac>> {
|
||
Wrapping((self.0).$wrapping(*other))
|
||
}
|
||
}
|
||
impl<Frac $(: $LeEqU)*> $OpAssign<$Bits> for Wrapping<$Fixed<Frac>> {
|
||
#[inline]
|
||
fn $op_assign(&mut self, other: $Bits) {
|
||
self.0 = (self.0).$wrapping(other);
|
||
}
|
||
}
|
||
impl<Frac $(: $LeEqU)*> $OpAssign<&$Bits> for Wrapping<$Fixed<Frac>> {
|
||
#[inline]
|
||
fn $op_assign(&mut self, other: &$Bits) {
|
||
self.0 = (self.0).$wrapping(*other);
|
||
}
|
||
}
|
||
};
|
||
}
|
||
|
||
macro_rules! ops {
|
||
($Fixed:ident($Bits:ident, $LeEqU:ident)) => {
|
||
op_bits! { $Fixed($Bits)::wrapping_mul_int, Mul mul, MulAssign mul_assign }
|
||
op_bits! { $Fixed($Bits)::wrapping_div_int, Div div, DivAssign div_assign }
|
||
op_bits! { $Fixed($Bits, $LeEqU)::rem, Rem rem, RemAssign rem_assign }
|
||
};
|
||
}
|
||
ops! { FixedI8(i8, LeEqU8) }
|
||
ops! { FixedI16(i16, LeEqU16) }
|
||
ops! { FixedI32(i32, LeEqU32) }
|
||
ops! { FixedI64(i64, LeEqU64) }
|
||
ops! { FixedI128(i128, LeEqU128) }
|
||
ops! { FixedU8(u8, LeEqU8) }
|
||
ops! { FixedU16(u16, LeEqU16) }
|
||
ops! { FixedU32(u32, LeEqU32) }
|
||
ops! { FixedU64(u64, LeEqU64) }
|
||
ops! { FixedU128(u128, LeEqU128) }
|