slightly cleaner isize/usize support in sealed_int
This commit is contained in:
parent
419e291507
commit
0d9c301505
|
@ -86,7 +86,7 @@ macro_rules! sealed_int {
|
|||
F: Fixed,
|
||||
{
|
||||
let (wrapped, overflow) = Self::ReprFixed::overflowing_from_fixed(fixed);
|
||||
(wrapped.to_bits().same_repr(), overflow)
|
||||
(IntRepr::from_int_repr(wrapped.to_bits()), overflow)
|
||||
}
|
||||
|
||||
#[inline]
|
||||
|
@ -94,7 +94,7 @@ macro_rules! sealed_int {
|
|||
where
|
||||
F: Fixed
|
||||
{
|
||||
F::overflowing_from_fixed(Self::ReprFixed::from_bits(self.same_repr()))
|
||||
F::overflowing_from_fixed(Self::ReprFixed::from_bits(self.int_repr()))
|
||||
}
|
||||
|
||||
#[inline]
|
||||
|
@ -114,7 +114,7 @@ macro_rules! sealed_int {
|
|||
|
||||
#[inline]
|
||||
fn to_repr_fixed(self) -> Self::ReprFixed {
|
||||
Self::ReprFixed::from_bits(self.same_repr())
|
||||
Self::ReprFixed::from_bits(self.int_repr())
|
||||
}
|
||||
|
||||
$($rest)*
|
||||
|
@ -158,7 +158,7 @@ macro_rules! sealed_int {
|
|||
let leading_zeros = self.leading_zeros();
|
||||
let need_to_shr = src_frac_bits - dst_frac_bits as i32;
|
||||
let overflow = src_bits - dst_bits > need_to_shr + leading_zeros as i32;
|
||||
let bits_128 = self.to_128();
|
||||
let bits_128 = u128::from(self.int_repr());
|
||||
let (bits, lost_bits) = match need_to_shr {
|
||||
-0x7fff_ffff..=-128 => (0, false),
|
||||
-127..=-1 => (bits_128 << -need_to_shr, false),
|
||||
|
@ -224,7 +224,7 @@ macro_rules! sealed_int {
|
|||
(!self).leading_zeros() - 1
|
||||
};
|
||||
let overflow = src_bits - dst_bits > need_to_shr + leading as i32;
|
||||
let bits_128 = self.to_128();
|
||||
let bits_128 = i128::from(self.int_repr());
|
||||
let (bits, lost_bits) = match need_to_shr {
|
||||
-0x7fff_ffff..=-128 => (0, false),
|
||||
-127..=-1 => (bits_128 << -need_to_shr, false),
|
||||
|
@ -266,87 +266,60 @@ sealed_int! { usize(U32, FixedU32) }
|
|||
#[cfg(target_pointer_width = "64")]
|
||||
sealed_int! { usize(U64, FixedU64) }
|
||||
|
||||
trait SameRepr<T> {
|
||||
fn same_repr(self) -> T;
|
||||
trait IntRepr: Copy {
|
||||
type Int;
|
||||
fn int_repr(self) -> Self::Int;
|
||||
fn from_int_repr(i: Self::Int) -> Self;
|
||||
}
|
||||
|
||||
impl<T> SameRepr<T> for T {
|
||||
#[inline]
|
||||
fn same_repr(self) -> T {
|
||||
self
|
||||
}
|
||||
}
|
||||
|
||||
macro_rules! same_repr {
|
||||
($A:ident, $B:ident) => {
|
||||
impl SameRepr<$A> for $B {
|
||||
#[inline]
|
||||
fn same_repr(self) -> $A {
|
||||
self as $A
|
||||
}
|
||||
}
|
||||
impl SameRepr<$B> for $A {
|
||||
#[inline]
|
||||
fn same_repr(self) -> $B {
|
||||
self as $B
|
||||
}
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
#[cfg(target_pointer_width = "32")]
|
||||
same_repr! { u32, usize }
|
||||
#[cfg(target_pointer_width = "32")]
|
||||
same_repr! { i32, isize }
|
||||
#[cfg(target_pointer_width = "64")]
|
||||
same_repr! { u64, usize }
|
||||
#[cfg(target_pointer_width = "64")]
|
||||
same_repr! { i64, isize }
|
||||
|
||||
trait To128 {
|
||||
type Output;
|
||||
fn to_128(self) -> Self::Output;
|
||||
}
|
||||
|
||||
macro_rules! to_128 {
|
||||
macro_rules! int_repr {
|
||||
($T:ident) => {
|
||||
impl To128 for $T {
|
||||
type Output = $T;
|
||||
impl IntRepr for $T {
|
||||
type Int = $T;
|
||||
#[inline]
|
||||
fn to_128(self) -> $T {
|
||||
fn int_repr(self) -> $T {
|
||||
self
|
||||
}
|
||||
}
|
||||
};
|
||||
($Dst:ident::from($Src:ident)) => {
|
||||
impl To128 for $Src {
|
||||
type Output = $Dst;
|
||||
#[inline]
|
||||
fn to_128(self) -> $Dst {
|
||||
<$Dst>::from(self)
|
||||
fn from_int_repr(i: $T) -> $T {
|
||||
i
|
||||
}
|
||||
}
|
||||
};
|
||||
($Src:ident as $Dst:ident) => {
|
||||
impl To128 for $Src {
|
||||
type Output = $Dst;
|
||||
($T:ident($Int:ident)) => {
|
||||
impl IntRepr for $T {
|
||||
type Int = $Int;
|
||||
#[inline]
|
||||
fn to_128(self) -> $Dst {
|
||||
self as $Dst
|
||||
fn int_repr(self) -> $Int {
|
||||
self as $Int
|
||||
}
|
||||
#[inline]
|
||||
fn from_int_repr(i: $Int) -> $T {
|
||||
i as $T
|
||||
}
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
to_128! { i128::from(i8) }
|
||||
to_128! { i128::from(i16) }
|
||||
to_128! { i128::from(i32) }
|
||||
to_128! { i128::from(i64) }
|
||||
to_128! { i128 }
|
||||
to_128! { isize as i128 }
|
||||
to_128! { u128::from(u8) }
|
||||
to_128! { u128::from(u16) }
|
||||
to_128! { u128::from(u32) }
|
||||
to_128! { u128::from(u64) }
|
||||
to_128! { u128 }
|
||||
to_128! { usize as u128 }
|
||||
int_repr! { i8 }
|
||||
int_repr! { i16 }
|
||||
int_repr! { i32 }
|
||||
int_repr! { i64 }
|
||||
int_repr! { i128 }
|
||||
#[cfg(target_pointer_width = "16")]
|
||||
int_repr! { isize(i16) }
|
||||
#[cfg(target_pointer_width = "32")]
|
||||
int_repr! { isize(i32) }
|
||||
#[cfg(target_pointer_width = "64")]
|
||||
int_repr! { isize(i64) }
|
||||
int_repr! { u8 }
|
||||
int_repr! { u16 }
|
||||
int_repr! { u32 }
|
||||
int_repr! { u64 }
|
||||
int_repr! { u128 }
|
||||
#[cfg(target_pointer_width = "16")]
|
||||
int_repr! { usize(u16) }
|
||||
#[cfg(target_pointer_width = "32")]
|
||||
int_repr! { usize(u32) }
|
||||
#[cfg(target_pointer_width = "64")]
|
||||
int_repr! { usize(u64) }
|
||||
|
|
Loading…
Reference in New Issue