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Diffstat (limited to 'vendor/num-traits/src/cast.rs')
| -rw-r--r-- | vendor/num-traits/src/cast.rs | 778 |
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 => {}); |