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authorValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
committerValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
commita990de90fe41456a23e58bd087d2f107d321f3a1 (patch)
tree15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/num-traits/src/cast.rs
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip
Deleted vendor folder
Diffstat (limited to 'vendor/num-traits/src/cast.rs')
-rw-r--r--vendor/num-traits/src/cast.rs778
1 files changed, 0 insertions, 778 deletions
diff --git a/vendor/num-traits/src/cast.rs b/vendor/num-traits/src/cast.rs
deleted file mode 100644
index 125e2e3..0000000
--- a/vendor/num-traits/src/cast.rs
+++ /dev/null
@@ -1,778 +0,0 @@
-use core::mem::size_of;
-use core::num::Wrapping;
-use core::{f32, f64};
-use core::{i128, i16, i32, i64, i8, isize};
-use core::{u128, u16, u32, u64, u8, usize};
-
-/// A generic trait for converting a value to a number.
-///
-/// A value can be represented by the target type when it lies within
-/// the range of scalars supported by the target type.
-/// For example, a negative integer cannot be represented by an unsigned
-/// integer type, and an `i64` with a very high magnitude might not be
-/// convertible to an `i32`.
-/// On the other hand, conversions with possible precision loss or truncation
-/// are admitted, like an `f32` with a decimal part to an integer type, or
-/// even a large `f64` saturating to `f32` infinity.
-pub trait ToPrimitive {
- /// Converts the value of `self` to an `isize`. If the value cannot be
- /// represented by an `isize`, then `None` is returned.
- #[inline]
- fn to_isize(&self) -> Option<isize> {
- self.to_i64().as_ref().and_then(ToPrimitive::to_isize)
- }
-
- /// Converts the value of `self` to an `i8`. If the value cannot be
- /// represented by an `i8`, then `None` is returned.
- #[inline]
- fn to_i8(&self) -> Option<i8> {
- self.to_i64().as_ref().and_then(ToPrimitive::to_i8)
- }
-
- /// Converts the value of `self` to an `i16`. If the value cannot be
- /// represented by an `i16`, then `None` is returned.
- #[inline]
- fn to_i16(&self) -> Option<i16> {
- self.to_i64().as_ref().and_then(ToPrimitive::to_i16)
- }
-
- /// Converts the value of `self` to an `i32`. If the value cannot be
- /// represented by an `i32`, then `None` is returned.
- #[inline]
- fn to_i32(&self) -> Option<i32> {
- self.to_i64().as_ref().and_then(ToPrimitive::to_i32)
- }
-
- /// Converts the value of `self` to an `i64`. If the value cannot be
- /// represented by an `i64`, then `None` is returned.
- fn to_i64(&self) -> Option<i64>;
-
- /// Converts the value of `self` to an `i128`. If the value cannot be
- /// represented by an `i128` (`i64` under the default implementation), then
- /// `None` is returned.
- ///
- /// The default implementation converts through `to_i64()`. Types implementing
- /// this trait should override this method if they can represent a greater range.
- #[inline]
- fn to_i128(&self) -> Option<i128> {
- self.to_i64().map(From::from)
- }
-
- /// Converts the value of `self` to a `usize`. If the value cannot be
- /// represented by a `usize`, then `None` is returned.
- #[inline]
- fn to_usize(&self) -> Option<usize> {
- self.to_u64().as_ref().and_then(ToPrimitive::to_usize)
- }
-
- /// Converts the value of `self` to a `u8`. If the value cannot be
- /// represented by a `u8`, then `None` is returned.
- #[inline]
- fn to_u8(&self) -> Option<u8> {
- self.to_u64().as_ref().and_then(ToPrimitive::to_u8)
- }
-
- /// Converts the value of `self` to a `u16`. If the value cannot be
- /// represented by a `u16`, then `None` is returned.
- #[inline]
- fn to_u16(&self) -> Option<u16> {
- self.to_u64().as_ref().and_then(ToPrimitive::to_u16)
- }
-
- /// Converts the value of `self` to a `u32`. If the value cannot be
- /// represented by a `u32`, then `None` is returned.
- #[inline]
- fn to_u32(&self) -> Option<u32> {
- self.to_u64().as_ref().and_then(ToPrimitive::to_u32)
- }
-
- /// Converts the value of `self` to a `u64`. If the value cannot be
- /// represented by a `u64`, then `None` is returned.
- fn to_u64(&self) -> Option<u64>;
-
- /// Converts the value of `self` to a `u128`. If the value cannot be
- /// represented by a `u128` (`u64` under the default implementation), then
- /// `None` is returned.
- ///
- /// The default implementation converts through `to_u64()`. Types implementing
- /// this trait should override this method if they can represent a greater range.
- #[inline]
- fn to_u128(&self) -> Option<u128> {
- self.to_u64().map(From::from)
- }
-
- /// Converts the value of `self` to an `f32`. Overflows may map to positive
- /// or negative inifinity, otherwise `None` is returned if the value cannot
- /// be represented by an `f32`.
- #[inline]
- fn to_f32(&self) -> Option<f32> {
- self.to_f64().as_ref().and_then(ToPrimitive::to_f32)
- }
-
- /// Converts the value of `self` to an `f64`. Overflows may map to positive
- /// or negative inifinity, otherwise `None` is returned if the value cannot
- /// be represented by an `f64`.
- ///
- /// The default implementation tries to convert through `to_i64()`, and
- /// failing that through `to_u64()`. Types implementing this trait should
- /// override this method if they can represent a greater range.
- #[inline]
- fn to_f64(&self) -> Option<f64> {
- match self.to_i64() {
- Some(i) => i.to_f64(),
- None => self.to_u64().as_ref().and_then(ToPrimitive::to_f64),
- }
- }
-}
-
-macro_rules! impl_to_primitive_int_to_int {
- ($SrcT:ident : $( $(#[$cfg:meta])* fn $method:ident -> $DstT:ident ; )*) => {$(
- #[inline]
- $(#[$cfg])*
- fn $method(&self) -> Option<$DstT> {
- let min = $DstT::MIN as $SrcT;
- let max = $DstT::MAX as $SrcT;
- if size_of::<$SrcT>() <= size_of::<$DstT>() || (min <= *self && *self <= max) {
- Some(*self as $DstT)
- } else {
- None
- }
- }
- )*}
-}
-
-macro_rules! impl_to_primitive_int_to_uint {
- ($SrcT:ident : $( $(#[$cfg:meta])* fn $method:ident -> $DstT:ident ; )*) => {$(
- #[inline]
- $(#[$cfg])*
- fn $method(&self) -> Option<$DstT> {
- let max = $DstT::MAX as $SrcT;
- if 0 <= *self && (size_of::<$SrcT>() <= size_of::<$DstT>() || *self <= max) {
- Some(*self as $DstT)
- } else {
- None
- }
- }
- )*}
-}
-
-macro_rules! impl_to_primitive_int {
- ($T:ident) => {
- impl ToPrimitive for $T {
- impl_to_primitive_int_to_int! { $T:
- fn to_isize -> isize;
- fn to_i8 -> i8;
- fn to_i16 -> i16;
- fn to_i32 -> i32;
- fn to_i64 -> i64;
- fn to_i128 -> i128;
- }
-
- impl_to_primitive_int_to_uint! { $T:
- fn to_usize -> usize;
- fn to_u8 -> u8;
- fn to_u16 -> u16;
- fn to_u32 -> u32;
- fn to_u64 -> u64;
- fn to_u128 -> u128;
- }
-
- #[inline]
- fn to_f32(&self) -> Option<f32> {
- Some(*self as f32)
- }
- #[inline]
- fn to_f64(&self) -> Option<f64> {
- Some(*self as f64)
- }
- }
- };
-}
-
-impl_to_primitive_int!(isize);
-impl_to_primitive_int!(i8);
-impl_to_primitive_int!(i16);
-impl_to_primitive_int!(i32);
-impl_to_primitive_int!(i64);
-impl_to_primitive_int!(i128);
-
-macro_rules! impl_to_primitive_uint_to_int {
- ($SrcT:ident : $( $(#[$cfg:meta])* fn $method:ident -> $DstT:ident ; )*) => {$(
- #[inline]
- $(#[$cfg])*
- fn $method(&self) -> Option<$DstT> {
- let max = $DstT::MAX as $SrcT;
- if size_of::<$SrcT>() < size_of::<$DstT>() || *self <= max {
- Some(*self as $DstT)
- } else {
- None
- }
- }
- )*}
-}
-
-macro_rules! impl_to_primitive_uint_to_uint {
- ($SrcT:ident : $( $(#[$cfg:meta])* fn $method:ident -> $DstT:ident ; )*) => {$(
- #[inline]
- $(#[$cfg])*
- fn $method(&self) -> Option<$DstT> {
- let max = $DstT::MAX as $SrcT;
- if size_of::<$SrcT>() <= size_of::<$DstT>() || *self <= max {
- Some(*self as $DstT)
- } else {
- None
- }
- }
- )*}
-}
-
-macro_rules! impl_to_primitive_uint {
- ($T:ident) => {
- impl ToPrimitive for $T {
- impl_to_primitive_uint_to_int! { $T:
- fn to_isize -> isize;
- fn to_i8 -> i8;
- fn to_i16 -> i16;
- fn to_i32 -> i32;
- fn to_i64 -> i64;
- fn to_i128 -> i128;
- }
-
- impl_to_primitive_uint_to_uint! { $T:
- fn to_usize -> usize;
- fn to_u8 -> u8;
- fn to_u16 -> u16;
- fn to_u32 -> u32;
- fn to_u64 -> u64;
- fn to_u128 -> u128;
- }
-
- #[inline]
- fn to_f32(&self) -> Option<f32> {
- Some(*self as f32)
- }
- #[inline]
- fn to_f64(&self) -> Option<f64> {
- Some(*self as f64)
- }
- }
- };
-}
-
-impl_to_primitive_uint!(usize);
-impl_to_primitive_uint!(u8);
-impl_to_primitive_uint!(u16);
-impl_to_primitive_uint!(u32);
-impl_to_primitive_uint!(u64);
-impl_to_primitive_uint!(u128);
-
-macro_rules! impl_to_primitive_float_to_float {
- ($SrcT:ident : $( fn $method:ident -> $DstT:ident ; )*) => {$(
- #[inline]
- fn $method(&self) -> Option<$DstT> {
- // We can safely cast all values, whether NaN, +-inf, or finite.
- // Finite values that are reducing size may saturate to +-inf.
- Some(*self as $DstT)
- }
- )*}
-}
-
-#[cfg(has_to_int_unchecked)]
-macro_rules! float_to_int_unchecked {
- // SAFETY: Must not be NaN or infinite; must be representable as the integer after truncating.
- // We already checked that the float is in the exclusive range `(MIN-1, MAX+1)`.
- ($float:expr => $int:ty) => {
- unsafe { $float.to_int_unchecked::<$int>() }
- };
-}
-
-#[cfg(not(has_to_int_unchecked))]
-macro_rules! float_to_int_unchecked {
- ($float:expr => $int:ty) => {
- $float as $int
- };
-}
-
-macro_rules! impl_to_primitive_float_to_signed_int {
- ($f:ident : $( $(#[$cfg:meta])* fn $method:ident -> $i:ident ; )*) => {$(
- #[inline]
- $(#[$cfg])*
- fn $method(&self) -> Option<$i> {
- // Float as int truncates toward zero, so we want to allow values
- // in the exclusive range `(MIN-1, MAX+1)`.
- if size_of::<$f>() > size_of::<$i>() {
- // With a larger size, we can represent the range exactly.
- const MIN_M1: $f = $i::MIN as $f - 1.0;
- const MAX_P1: $f = $i::MAX as $f + 1.0;
- if *self > MIN_M1 && *self < MAX_P1 {
- return Some(float_to_int_unchecked!(*self => $i));
- }
- } else {
- // We can't represent `MIN-1` exactly, but there's no fractional part
- // at this magnitude, so we can just use a `MIN` inclusive boundary.
- const MIN: $f = $i::MIN as $f;
- // We can't represent `MAX` exactly, but it will round up to exactly
- // `MAX+1` (a power of two) when we cast it.
- const MAX_P1: $f = $i::MAX as $f;
- if *self >= MIN && *self < MAX_P1 {
- return Some(float_to_int_unchecked!(*self => $i));
- }
- }
- None
- }
- )*}
-}
-
-macro_rules! impl_to_primitive_float_to_unsigned_int {
- ($f:ident : $( $(#[$cfg:meta])* fn $method:ident -> $u:ident ; )*) => {$(
- #[inline]
- $(#[$cfg])*
- fn $method(&self) -> Option<$u> {
- // Float as int truncates toward zero, so we want to allow values
- // in the exclusive range `(-1, MAX+1)`.
- if size_of::<$f>() > size_of::<$u>() {
- // With a larger size, we can represent the range exactly.
- const MAX_P1: $f = $u::MAX as $f + 1.0;
- if *self > -1.0 && *self < MAX_P1 {
- return Some(float_to_int_unchecked!(*self => $u));
- }
- } else {
- // We can't represent `MAX` exactly, but it will round up to exactly
- // `MAX+1` (a power of two) when we cast it.
- // (`u128::MAX as f32` is infinity, but this is still ok.)
- const MAX_P1: $f = $u::MAX as $f;
- if *self > -1.0 && *self < MAX_P1 {
- return Some(float_to_int_unchecked!(*self => $u));
- }
- }
- None
- }
- )*}
-}
-
-macro_rules! impl_to_primitive_float {
- ($T:ident) => {
- impl ToPrimitive for $T {
- impl_to_primitive_float_to_signed_int! { $T:
- fn to_isize -> isize;
- fn to_i8 -> i8;
- fn to_i16 -> i16;
- fn to_i32 -> i32;
- fn to_i64 -> i64;
- fn to_i128 -> i128;
- }
-
- impl_to_primitive_float_to_unsigned_int! { $T:
- fn to_usize -> usize;
- fn to_u8 -> u8;
- fn to_u16 -> u16;
- fn to_u32 -> u32;
- fn to_u64 -> u64;
- fn to_u128 -> u128;
- }
-
- impl_to_primitive_float_to_float! { $T:
- fn to_f32 -> f32;
- fn to_f64 -> f64;
- }
- }
- };
-}
-
-impl_to_primitive_float!(f32);
-impl_to_primitive_float!(f64);
-
-/// A generic trait for converting a number to a value.
-///
-/// A value can be represented by the target type when it lies within
-/// the range of scalars supported by the target type.
-/// For example, a negative integer cannot be represented by an unsigned
-/// integer type, and an `i64` with a very high magnitude might not be
-/// convertible to an `i32`.
-/// On the other hand, conversions with possible precision loss or truncation
-/// are admitted, like an `f32` with a decimal part to an integer type, or
-/// even a large `f64` saturating to `f32` infinity.
-pub trait FromPrimitive: Sized {
- /// Converts an `isize` to return an optional value of this type. If the
- /// value cannot be represented by this type, then `None` is returned.
- #[inline]
- fn from_isize(n: isize) -> Option<Self> {
- n.to_i64().and_then(FromPrimitive::from_i64)
- }
-
- /// Converts an `i8` to return an optional value of this type. If the
- /// value cannot be represented by this type, then `None` is returned.
- #[inline]
- fn from_i8(n: i8) -> Option<Self> {
- FromPrimitive::from_i64(From::from(n))
- }
-
- /// Converts an `i16` to return an optional value of this type. If the
- /// value cannot be represented by this type, then `None` is returned.
- #[inline]
- fn from_i16(n: i16) -> Option<Self> {
- FromPrimitive::from_i64(From::from(n))
- }
-
- /// Converts an `i32` to return an optional value of this type. If the
- /// value cannot be represented by this type, then `None` is returned.
- #[inline]
- fn from_i32(n: i32) -> Option<Self> {
- FromPrimitive::from_i64(From::from(n))
- }
-
- /// Converts an `i64` to return an optional value of this type. If the
- /// value cannot be represented by this type, then `None` is returned.
- fn from_i64(n: i64) -> Option<Self>;
-
- /// Converts an `i128` to return an optional value of this type. If the
- /// value cannot be represented by this type, then `None` is returned.
- ///
- /// The default implementation converts through `from_i64()`. Types implementing
- /// this trait should override this method if they can represent a greater range.
- #[inline]
- fn from_i128(n: i128) -> Option<Self> {
- n.to_i64().and_then(FromPrimitive::from_i64)
- }
-
- /// Converts a `usize` to return an optional value of this type. If the
- /// value cannot be represented by this type, then `None` is returned.
- #[inline]
- fn from_usize(n: usize) -> Option<Self> {
- n.to_u64().and_then(FromPrimitive::from_u64)
- }
-
- /// Converts an `u8` to return an optional value of this type. If the
- /// value cannot be represented by this type, then `None` is returned.
- #[inline]
- fn from_u8(n: u8) -> Option<Self> {
- FromPrimitive::from_u64(From::from(n))
- }
-
- /// Converts an `u16` to return an optional value of this type. If the
- /// value cannot be represented by this type, then `None` is returned.
- #[inline]
- fn from_u16(n: u16) -> Option<Self> {
- FromPrimitive::from_u64(From::from(n))
- }
-
- /// Converts an `u32` to return an optional value of this type. If the
- /// value cannot be represented by this type, then `None` is returned.
- #[inline]
- fn from_u32(n: u32) -> Option<Self> {
- FromPrimitive::from_u64(From::from(n))
- }
-
- /// Converts an `u64` to return an optional value of this type. If the
- /// value cannot be represented by this type, then `None` is returned.
- fn from_u64(n: u64) -> Option<Self>;
-
- /// Converts an `u128` to return an optional value of this type. If the
- /// value cannot be represented by this type, then `None` is returned.
- ///
- /// The default implementation converts through `from_u64()`. Types implementing
- /// this trait should override this method if they can represent a greater range.
- #[inline]
- fn from_u128(n: u128) -> Option<Self> {
- n.to_u64().and_then(FromPrimitive::from_u64)
- }
-
- /// Converts a `f32` to return an optional value of this type. If the
- /// value cannot be represented by this type, then `None` is returned.
- #[inline]
- fn from_f32(n: f32) -> Option<Self> {
- FromPrimitive::from_f64(From::from(n))
- }
-
- /// Converts a `f64` to return an optional value of this type. If the
- /// value cannot be represented by this type, then `None` is returned.
- ///
- /// The default implementation tries to convert through `from_i64()`, and
- /// failing that through `from_u64()`. Types implementing this trait should
- /// override this method if they can represent a greater range.
- #[inline]
- fn from_f64(n: f64) -> Option<Self> {
- match n.to_i64() {
- Some(i) => FromPrimitive::from_i64(i),
- None => n.to_u64().and_then(FromPrimitive::from_u64),
- }
- }
-}
-
-macro_rules! impl_from_primitive {
- ($T:ty, $to_ty:ident) => {
- #[allow(deprecated)]
- impl FromPrimitive for $T {
- #[inline]
- fn from_isize(n: isize) -> Option<$T> {
- n.$to_ty()
- }
- #[inline]
- fn from_i8(n: i8) -> Option<$T> {
- n.$to_ty()
- }
- #[inline]
- fn from_i16(n: i16) -> Option<$T> {
- n.$to_ty()
- }
- #[inline]
- fn from_i32(n: i32) -> Option<$T> {
- n.$to_ty()
- }
- #[inline]
- fn from_i64(n: i64) -> Option<$T> {
- n.$to_ty()
- }
- #[inline]
- fn from_i128(n: i128) -> Option<$T> {
- n.$to_ty()
- }
-
- #[inline]
- fn from_usize(n: usize) -> Option<$T> {
- n.$to_ty()
- }
- #[inline]
- fn from_u8(n: u8) -> Option<$T> {
- n.$to_ty()
- }
- #[inline]
- fn from_u16(n: u16) -> Option<$T> {
- n.$to_ty()
- }
- #[inline]
- fn from_u32(n: u32) -> Option<$T> {
- n.$to_ty()
- }
- #[inline]
- fn from_u64(n: u64) -> Option<$T> {
- n.$to_ty()
- }
- #[inline]
- fn from_u128(n: u128) -> Option<$T> {
- n.$to_ty()
- }
-
- #[inline]
- fn from_f32(n: f32) -> Option<$T> {
- n.$to_ty()
- }
- #[inline]
- fn from_f64(n: f64) -> Option<$T> {
- n.$to_ty()
- }
- }
- };
-}
-
-impl_from_primitive!(isize, to_isize);
-impl_from_primitive!(i8, to_i8);
-impl_from_primitive!(i16, to_i16);
-impl_from_primitive!(i32, to_i32);
-impl_from_primitive!(i64, to_i64);
-impl_from_primitive!(i128, to_i128);
-impl_from_primitive!(usize, to_usize);
-impl_from_primitive!(u8, to_u8);
-impl_from_primitive!(u16, to_u16);
-impl_from_primitive!(u32, to_u32);
-impl_from_primitive!(u64, to_u64);
-impl_from_primitive!(u128, to_u128);
-impl_from_primitive!(f32, to_f32);
-impl_from_primitive!(f64, to_f64);
-
-macro_rules! impl_to_primitive_wrapping {
- ($( $(#[$cfg:meta])* fn $method:ident -> $i:ident ; )*) => {$(
- #[inline]
- $(#[$cfg])*
- fn $method(&self) -> Option<$i> {
- (self.0).$method()
- }
- )*}
-}
-
-impl<T: ToPrimitive> ToPrimitive for Wrapping<T> {
- impl_to_primitive_wrapping! {
- fn to_isize -> isize;
- fn to_i8 -> i8;
- fn to_i16 -> i16;
- fn to_i32 -> i32;
- fn to_i64 -> i64;
- fn to_i128 -> i128;
-
- fn to_usize -> usize;
- fn to_u8 -> u8;
- fn to_u16 -> u16;
- fn to_u32 -> u32;
- fn to_u64 -> u64;
- fn to_u128 -> u128;
-
- fn to_f32 -> f32;
- fn to_f64 -> f64;
- }
-}
-
-macro_rules! impl_from_primitive_wrapping {
- ($( $(#[$cfg:meta])* fn $method:ident ( $i:ident ); )*) => {$(
- #[inline]
- $(#[$cfg])*
- fn $method(n: $i) -> Option<Self> {
- T::$method(n).map(Wrapping)
- }
- )*}
-}
-
-impl<T: FromPrimitive> FromPrimitive for Wrapping<T> {
- impl_from_primitive_wrapping! {
- fn from_isize(isize);
- fn from_i8(i8);
- fn from_i16(i16);
- fn from_i32(i32);
- fn from_i64(i64);
- fn from_i128(i128);
-
- fn from_usize(usize);
- fn from_u8(u8);
- fn from_u16(u16);
- fn from_u32(u32);
- fn from_u64(u64);
- fn from_u128(u128);
-
- fn from_f32(f32);
- fn from_f64(f64);
- }
-}
-
-/// Cast from one machine scalar to another.
-///
-/// # Examples
-///
-/// ```
-/// # use num_traits as num;
-/// let twenty: f32 = num::cast(0x14).unwrap();
-/// assert_eq!(twenty, 20f32);
-/// ```
-///
-#[inline]
-pub fn cast<T: NumCast, U: NumCast>(n: T) -> Option<U> {
- NumCast::from(n)
-}
-
-/// An interface for casting between machine scalars.
-pub trait NumCast: Sized + ToPrimitive {
- /// Creates a number from another value that can be converted into
- /// a primitive via the `ToPrimitive` trait. If the source value cannot be
- /// represented by the target type, then `None` is returned.
- ///
- /// A value can be represented by the target type when it lies within
- /// the range of scalars supported by the target type.
- /// For example, a negative integer cannot be represented by an unsigned
- /// integer type, and an `i64` with a very high magnitude might not be
- /// convertible to an `i32`.
- /// On the other hand, conversions with possible precision loss or truncation
- /// are admitted, like an `f32` with a decimal part to an integer type, or
- /// even a large `f64` saturating to `f32` infinity.
- fn from<T: ToPrimitive>(n: T) -> Option<Self>;
-}
-
-macro_rules! impl_num_cast {
- ($T:ty, $conv:ident) => {
- impl NumCast for $T {
- #[inline]
- #[allow(deprecated)]
- fn from<N: ToPrimitive>(n: N) -> Option<$T> {
- // `$conv` could be generated using `concat_idents!`, but that
- // macro seems to be broken at the moment
- n.$conv()
- }
- }
- };
-}
-
-impl_num_cast!(u8, to_u8);
-impl_num_cast!(u16, to_u16);
-impl_num_cast!(u32, to_u32);
-impl_num_cast!(u64, to_u64);
-impl_num_cast!(u128, to_u128);
-impl_num_cast!(usize, to_usize);
-impl_num_cast!(i8, to_i8);
-impl_num_cast!(i16, to_i16);
-impl_num_cast!(i32, to_i32);
-impl_num_cast!(i64, to_i64);
-impl_num_cast!(i128, to_i128);
-impl_num_cast!(isize, to_isize);
-impl_num_cast!(f32, to_f32);
-impl_num_cast!(f64, to_f64);
-
-impl<T: NumCast> NumCast for Wrapping<T> {
- fn from<U: ToPrimitive>(n: U) -> Option<Self> {
- T::from(n).map(Wrapping)
- }
-}
-
-/// A generic interface for casting between machine scalars with the
-/// `as` operator, which admits narrowing and precision loss.
-/// Implementers of this trait `AsPrimitive` should behave like a primitive
-/// numeric type (e.g. a newtype around another primitive), and the
-/// intended conversion must never fail.
-///
-/// # Examples
-///
-/// ```
-/// # use num_traits::AsPrimitive;
-/// let three: i32 = (3.14159265f32).as_();
-/// assert_eq!(three, 3);
-/// ```
-///
-/// # Safety
-///
-/// **In Rust versions before 1.45.0**, some uses of the `as` operator were not entirely safe.
-/// In particular, it was undefined behavior if
-/// a truncated floating point value could not fit in the target integer
-/// type ([#10184](https://github.com/rust-lang/rust/issues/10184)).
-///
-/// ```ignore
-/// # use num_traits::AsPrimitive;
-/// let x: u8 = (1.04E+17).as_(); // UB
-/// ```
-///
-pub trait AsPrimitive<T>: 'static + Copy
-where
- T: 'static + Copy,
-{
- /// Convert a value to another, using the `as` operator.
- fn as_(self) -> T;
-}
-
-macro_rules! impl_as_primitive {
- (@ $T: ty => $(#[$cfg:meta])* impl $U: ty ) => {
- $(#[$cfg])*
- impl AsPrimitive<$U> for $T {
- #[inline] fn as_(self) -> $U { self as $U }
- }
- };
- (@ $T: ty => { $( $U: ty ),* } ) => {$(
- impl_as_primitive!(@ $T => impl $U);
- )*};
- ($T: ty => { $( $U: ty ),* } ) => {
- impl_as_primitive!(@ $T => { $( $U ),* });
- impl_as_primitive!(@ $T => { u8, u16, u32, u64, u128, usize });
- impl_as_primitive!(@ $T => { i8, i16, i32, i64, i128, isize });
- };
-}
-
-impl_as_primitive!(u8 => { char, f32, f64 });
-impl_as_primitive!(i8 => { f32, f64 });
-impl_as_primitive!(u16 => { f32, f64 });
-impl_as_primitive!(i16 => { f32, f64 });
-impl_as_primitive!(u32 => { f32, f64 });
-impl_as_primitive!(i32 => { f32, f64 });
-impl_as_primitive!(u64 => { f32, f64 });
-impl_as_primitive!(i64 => { f32, f64 });
-impl_as_primitive!(u128 => { f32, f64 });
-impl_as_primitive!(i128 => { f32, f64 });
-impl_as_primitive!(usize => { f32, f64 });
-impl_as_primitive!(isize => { f32, f64 });
-impl_as_primitive!(f32 => { f32, f64 });
-impl_as_primitive!(f64 => { f32, f64 });
-impl_as_primitive!(char => { char });
-impl_as_primitive!(bool => {});