M-Labs/compiler-builtins-zynq
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Remove duplication by adding a macro

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This commit is contained in:
est31 2017-09-14 17:39:25 +02:00
parent 3efae7f7d9
commit 0cd476220b
1 changed files with 26 additions and 63 deletions
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89
src/int/mod.rs
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@ -84,31 +84,15 @@ fn unwrap<T>(t: Option<T>) -> T {
}
}
macro_rules! int_impl {
($ity:ty, $uty:ty, $bits:expr) => {
impl Int for $uty {
type OtherSign = $ity;
type UnsignedInt = $uty;
macro_rules! int_impl_common {
($ty:ty, $bits:expr) => {
const BITS: u32 = $bits;
const ZERO: Self = 0;
const ONE: Self = 1;
fn extract_sign(self) -> (bool, $uty) {
(false, self)
}
fn unsigned(self) -> $uty {
self
}
fn from_unsigned(me: $uty) -> Self {
me
}
fn from_bool(b: bool) -> Self {
b as $uty
b as $ty
}
fn max_value() -> Self {
@ -146,17 +130,34 @@ macro_rules! int_impl {
fn leading_zeros(self) -> u32 {
<Self>::leading_zeros(self)
}
}
}
macro_rules! int_impl {
($ity:ty, $uty:ty, $bits:expr) => {
impl Int for $uty {
type OtherSign = $ity;
type UnsignedInt = $uty;
fn extract_sign(self) -> (bool, $uty) {
(false, self)
}
fn unsigned(self) -> $uty {
self
}
fn from_unsigned(me: $uty) -> Self {
me
}
int_impl_common!($uty, $bits);
}
impl Int for $ity {
type OtherSign = $uty;
type UnsignedInt = $uty;
const BITS: u32 = $bits;
const ZERO: Self = 0;
const ONE: Self = 1;
fn extract_sign(self) -> (bool, $uty) {
if self < 0 {
(true, (!(self as $uty)).wrapping_add(1))
@ -173,45 +174,7 @@ macro_rules! int_impl {
me as $ity
}
fn from_bool(b: bool) -> Self {
b as $ity
}
fn max_value() -> Self {
<Self>::max_value()
}
fn min_value() -> Self {
<Self>::min_value()
}
fn wrapping_add(self, other: Self) -> Self {
<Self>::wrapping_add(self, other)
}
fn wrapping_mul(self, other: Self) -> Self {
<Self>::wrapping_mul(self, other)
}
fn wrapping_sub(self, other: Self) -> Self {
<Self>::wrapping_sub(self, other)
}
fn wrapping_shl(self, other: u32) -> Self {
<Self>::wrapping_shl(self, other)
}
fn aborting_div(self, other: Self) -> Self {
unwrap(<Self>::checked_div(self, other))
}
fn aborting_rem(self, other: Self) -> Self {
unwrap(<Self>::checked_rem(self, other))
}
fn leading_zeros(self) -> u32 {
<Self>::leading_zeros(self)
}
int_impl_common!($ity, $bits);
}
}
}