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fixed
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add az support

This commit is contained in:
Trevor Spiteri 2019-10-10 16:47:10 +02:00
parent 3248e354ba
commit 019c1eeb23
3 changed files with 250 additions and 0 deletions
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1
Cargo.toml
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@ -25,6 +25,7 @@ fail-on-warnings = []
[dependencies]
typenum = "1.10"
az = "0.3"
half = { version = "1.2", optional = true }
serde = { version = "1.0.60", default-features = false, optional = true }

248
src/cast.rs Normal file
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@ -0,0 +1,248 @@
// Copyright © 2018–2019 Trevor Spiteri
// This library is free software: you can redistribute it and/or
// modify it under the terms of either
//
// * the Apache License, Version 2.0 or
// * the MIT License
//
// at your option.
//
// You should have recieved copies of the Apache License and the MIT
// License along with the library. If not, see
// <https://www.apache.org/licenses/LICENSE-2.0> and
// <https://opensource.org/licenses/MIT>.
use crate::{
types::extra::{LeEqU128, LeEqU16, LeEqU32, LeEqU64, LeEqU8},
FixedI128, FixedI16, FixedI32, FixedI64, FixedI8, FixedU128, FixedU16, FixedU32, FixedU64,
FixedU8,
};
use az::{Cast, CheckedCast, OverflowingCast, SaturatingCast, StaticCast, WrappingCast};
use core::mem;
#[cfg(feature = "f16")]
use half::f16;
macro_rules! run_time {
($Fixed:ident($LeEqU:ident); $Num:ident) => {
impl<Frac: $LeEqU> Cast<$Fixed<Frac>> for $Num {
#[inline]
fn cast(self) -> $Fixed<Frac> {
<$Fixed<Frac>>::from_num(self)
}
}
impl<Frac: $LeEqU> Cast<$Num> for $Fixed<Frac> {
#[inline]
fn cast(self) -> $Num {
self.to_num()
}
}
impl<Frac: $LeEqU> CheckedCast<$Fixed<Frac>> for $Num {
#[inline]
fn checked_cast(self) -> Option<$Fixed<Frac>> {
<$Fixed<Frac>>::checked_from_num(self)
}
}
impl<Frac: $LeEqU> CheckedCast<$Num> for $Fixed<Frac> {
#[inline]
fn checked_cast(self) -> Option<$Num> {
self.checked_to_num()
}
}
impl<Frac: $LeEqU> SaturatingCast<$Fixed<Frac>> for $Num {
#[inline]
fn saturating_cast(self) -> $Fixed<Frac> {
<$Fixed<Frac>>::saturating_from_num(self)
}
}
impl<Frac: $LeEqU> SaturatingCast<$Num> for $Fixed<Frac> {
#[inline]
fn saturating_cast(self) -> $Num {
self.saturating_to_num()
}
}
impl<Frac: $LeEqU> WrappingCast<$Fixed<Frac>> for $Num {
#[inline]
fn wrapping_cast(self) -> $Fixed<Frac> {
<$Fixed<Frac>>::wrapping_from_num(self)
}
}
impl<Frac: $LeEqU> WrappingCast<$Num> for $Fixed<Frac> {
#[inline]
fn wrapping_cast(self) -> $Num {
self.wrapping_to_num()
}
}
impl<Frac: $LeEqU> OverflowingCast<$Fixed<Frac>> for $Num {
#[inline]
fn overflowing_cast(self) -> ($Fixed<Frac>, bool) {
<$Fixed<Frac>>::overflowing_from_num(self)
}
}
impl<Frac: $LeEqU> OverflowingCast<$Num> for $Fixed<Frac> {
#[inline]
fn overflowing_cast(self) -> ($Num, bool) {
self.overflowing_to_num()
}
}
};
}
macro_rules! compile_time {
(impl<$Frac:ident: $LeEqU:ident> StaticCast<$Dst:ty> for $Src:ty { $cond:expr }) => {
impl<$Frac: $LeEqU> StaticCast<$Dst> for $Src {
#[inline]
fn static_cast(self) -> Option<$Dst> {
if $cond {
Some(az::cast(self))
} else {
None
}
}
}
};
($FixedI:ident, $FixedU:ident($LeEqU:ident); int $IntI:ident, $IntU:ident) => {
compile_time! {
impl<Frac: $LeEqU> StaticCast<$FixedI<Frac>> for $IntI {
$FixedI::<Frac>::INT_NBITS >= 8 * mem::size_of::<$IntI>() as u32
}
}
compile_time! {
impl<Frac: $LeEqU> StaticCast<$IntI> for $FixedI<Frac> {
8 * mem::size_of::<$IntI>() as u32 >= $FixedI::<Frac>::INT_NBITS
}
}
compile_time! {
impl<Frac: $LeEqU> StaticCast<$FixedU<Frac>> for $IntI {
false
}
}
compile_time! {
impl<Frac: $LeEqU> StaticCast<$IntI> for $FixedU<Frac> {
8 * mem::size_of::<$IntI>() as u32 >= $FixedU::<Frac>::INT_NBITS + 1
}
}
compile_time! {
impl<Frac: $LeEqU> StaticCast<$FixedI<Frac>> for $IntU {
$FixedI::<Frac>::INT_NBITS >= 8 * mem::size_of::<$IntU>() as u32 + 1
}
}
compile_time! {
impl<Frac: $LeEqU> StaticCast<$IntU> for $FixedI<Frac> {
false
}
}
compile_time! {
impl<Frac: $LeEqU> StaticCast<$FixedU<Frac>> for $IntU {
$FixedU::<Frac>::INT_NBITS >= 8 * mem::size_of::<$IntU>() as u32
}
}
compile_time! {
impl<Frac: $LeEqU> StaticCast<$IntU> for $FixedU<Frac> {
8 * mem::size_of::<$IntU>() as u32 >= $FixedU::<Frac>::INT_NBITS
}
}
};
($Fixed:ident($LeEqU:ident); float $Float:ident) => {
compile_time! {
impl<Frac: $LeEqU> StaticCast<$Fixed<Frac>> for $Float {
false
}
}
compile_time! {
impl<Frac: $LeEqU> StaticCast<$Float> for $Fixed<Frac> {
true
}
}
};
}
macro_rules! cross_num {
($Fixed:ident($LeEqU:ident); $($Num:ident,)*) => { $(
run_time! { $Fixed($LeEqU); $Num }
)* };
($($Fixed:ident($LeEqU:ident),)*) => { $(
cross_num! {
$Fixed($LeEqU);
i8, i16, i32, i64, i128, isize,
u8, u16, u32, u64, u128, usize,
f32, f64,
}
#[cfg(feature = "f16")]
cross_num! {
$Fixed($LeEqU);
f16,
}
)* };
}
cross_num! {
FixedI8(LeEqU8), FixedI16(LeEqU16), FixedI32(LeEqU32), FixedI64(LeEqU64), FixedI128(LeEqU128),
FixedU8(LeEqU8), FixedU16(LeEqU16), FixedU32(LeEqU32), FixedU64(LeEqU64), FixedU128(LeEqU128),
}
macro_rules! cross_int {
($FixedI:ident, $FixedU:ident($LeEqU:ident); $(($IntI:ident, $IntU:ident),)*) => { $(
compile_time! { $FixedI, $FixedU($LeEqU); int $IntI, $IntU }
)* };
($($FixedI:ident, $FixedU:ident($LeEqU:ident),)*) => { $(
cross_int! {
$FixedI, $FixedU($LeEqU);
(i8, u8),
(i16, u16),
(i32, u32),
(i64, u64),
(i128, u128),
(isize, usize),
}
)* };
}
cross_int! {
FixedI8, FixedU8(LeEqU8),
FixedI16, FixedU16(LeEqU16),
FixedI32, FixedU32(LeEqU32),
FixedI64, FixedU64(LeEqU64),
FixedI128, FixedU128(LeEqU128),
}
macro_rules! cross_float {
($Fixed:ident($LeEqU:ident); $($Float:ident,)*) => { $(
compile_time! { $Fixed($LeEqU); float $Float }
)* };
($($Fixed:ident($LeEqU:ident),)*) => { $(
cross_float! {
$Fixed($LeEqU);
f32, f64,
}
#[cfg(feature = "f16")]
cross_float! {
$Fixed($LeEqU);
f16,
}
)* };
}
cross_float! {
FixedI8(LeEqU8), FixedI16(LeEqU16), FixedI32(LeEqU32), FixedI64(LeEqU64), FixedI128(LeEqU128),
FixedU8(LeEqU8), FixedU16(LeEqU16), FixedU32(LeEqU32), FixedU64(LeEqU64), FixedU128(LeEqU128),
}

1
src/lib.rs
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@ -235,6 +235,7 @@ extern crate std;
mod macros;
mod arith;
mod cast;
mod cmp;
pub mod consts;
mod convert;