3 traits::{ConvertFrom, ConvertTo},
5 use core::{fmt, hash, ops};
11 impl Sealed for F16 {}
12 impl Sealed for f32 {}
13 impl Sealed for f64 {}
15 impl Sealed for u16 {}
16 impl Sealed for u32 {}
17 impl Sealed for u64 {}
19 impl Sealed for i16 {}
20 impl Sealed for i32 {}
21 impl Sealed for i64 {}
33 + ops::Add<Output = Self>
34 + ops::Sub<Output = Self>
35 + ops::Mul<Output = Self>
36 + ops::Div<Output = Self>
37 + ops::Rem<Output = Self>
76 + ops::BitAnd<Output = Self>
77 + ops::BitOr<Output = Self>
78 + ops::BitXor<Output = Self>
79 + ops::Shl<Output = Self>
80 + ops::Shr<Output = Self>
81 + ops::Not<Output = Self>
90 pub trait PrimUInt: PrimInt + ConvertFrom<Self::SignedType> {
91 type SignedType: PrimSInt<UnsignedType = Self> + ConvertFrom<Self>;
94 pub trait PrimSInt: PrimInt + ops::Neg<Output = Self> + ConvertFrom<Self::UnsignedType> {
95 type UnsignedType: PrimUInt<SignedType = Self> + ConvertFrom<Self>;
98 macro_rules! impl_int {
99 ($uint:ident, $sint:ident) => {
100 impl PrimBase for $uint {}
101 impl PrimBase for $sint {}
102 impl PrimInt for $uint {}
103 impl PrimInt for $sint {}
104 impl PrimUInt for $uint {
105 type SignedType = $sint;
107 impl PrimSInt for $sint {
108 type UnsignedType = $uint;
119 PrimBase + ops::Neg<Output = Self> + ConvertFrom<Self::BitsType> + ConvertFrom<Self::SignedBitsType>
121 type BitsType: PrimUInt<SignedType = Self::SignedBitsType> + ConvertFrom<Self>;
122 type SignedBitsType: PrimSInt<UnsignedType = Self::BitsType> + ConvertFrom<Self>;
123 const EXPONENT_BIAS_UNSIGNED: Self::BitsType;
124 const EXPONENT_BIAS_SIGNED: Self::SignedBitsType;
125 const SIGN_FIELD_WIDTH: Self::BitsType;
126 const EXPONENT_FIELD_WIDTH: Self::BitsType;
127 const MANTISSA_FIELD_WIDTH: Self::BitsType;
128 const SIGN_FIELD_SHIFT: Self::BitsType;
129 const EXPONENT_FIELD_SHIFT: Self::BitsType;
130 const MANTISSA_FIELD_SHIFT: Self::BitsType;
131 const SIGN_FIELD_MASK: Self::BitsType;
132 const EXPONENT_FIELD_MASK: Self::BitsType;
133 const MANTISSA_FIELD_MASK: Self::BitsType;
134 const IMPLICIT_MANTISSA_BIT: Self::BitsType;
135 const ZERO_SUBNORMAL_EXPONENT: Self::BitsType;
136 const NAN_INFINITY_EXPONENT: Self::BitsType;
137 const INFINITY_BITS: Self::BitsType;
138 const NAN_BITS: Self::BitsType;
139 fn is_nan(self) -> bool;
140 fn from_bits(bits: Self::BitsType) -> Self;
141 fn to_bits(self) -> Self::BitsType;
142 fn abs(self) -> Self;
145 macro_rules! impl_float {
147 impl PrimFloat for $float:ident {
148 type BitsType = $bits_type:ident;
149 type SignedBitsType = $signed_bits_type:ident;
150 const EXPONENT_FIELD_WIDTH: u32 = $exponent_field_width:literal;
151 const MANTISSA_FIELD_WIDTH: u32 = $mantissa_field_width:literal;
154 impl PrimBase for $float {}
156 impl PrimFloat for $float {
157 type BitsType = $bits_type;
158 type SignedBitsType = $signed_bits_type;
159 const EXPONENT_BIAS_UNSIGNED: Self::BitsType =
160 (1 << (Self::EXPONENT_FIELD_WIDTH - 1)) - 1;
161 const EXPONENT_BIAS_SIGNED: Self::SignedBitsType = Self::EXPONENT_BIAS_UNSIGNED as _;
162 const SIGN_FIELD_WIDTH: Self::BitsType = 1;
163 const EXPONENT_FIELD_WIDTH: Self::BitsType = $exponent_field_width;
164 const MANTISSA_FIELD_WIDTH: Self::BitsType = $mantissa_field_width;
165 const SIGN_FIELD_SHIFT: Self::BitsType =
166 Self::EXPONENT_FIELD_SHIFT + Self::EXPONENT_FIELD_WIDTH;
167 const EXPONENT_FIELD_SHIFT: Self::BitsType = Self::MANTISSA_FIELD_WIDTH;
168 const MANTISSA_FIELD_SHIFT: Self::BitsType = 0;
169 const SIGN_FIELD_MASK: Self::BitsType = 1 << Self::SIGN_FIELD_SHIFT;
170 const EXPONENT_FIELD_MASK: Self::BitsType =
171 ((1 << Self::EXPONENT_FIELD_WIDTH) - 1) << Self::EXPONENT_FIELD_SHIFT;
172 const MANTISSA_FIELD_MASK: Self::BitsType = (1 << Self::MANTISSA_FIELD_WIDTH) - 1;
173 const IMPLICIT_MANTISSA_BIT: Self::BitsType = 1 << Self::MANTISSA_FIELD_WIDTH;
174 const ZERO_SUBNORMAL_EXPONENT: Self::BitsType = 0;
175 const NAN_INFINITY_EXPONENT: Self::BitsType = (1 << Self::EXPONENT_FIELD_WIDTH) - 1;
176 const INFINITY_BITS: Self::BitsType =
177 Self::NAN_INFINITY_EXPONENT << Self::EXPONENT_FIELD_SHIFT;
178 const NAN_BITS: Self::BitsType =
179 Self::INFINITY_BITS | (1 << (Self::MANTISSA_FIELD_WIDTH - 1));
180 fn is_nan(self) -> bool {
183 fn from_bits(bits: Self::BitsType) -> Self {
184 $float::from_bits(bits)
186 fn to_bits(self) -> Self::BitsType {
189 fn abs(self) -> Self {
190 #[cfg(feature = "std")]
191 return $float::abs(self);
192 #[cfg(not(feature = "std"))]
200 impl PrimFloat for F16 {
202 type SignedBitsType = i16;
203 const EXPONENT_FIELD_WIDTH: u32 = 5;
204 const MANTISSA_FIELD_WIDTH: u32 = 10;
209 impl PrimFloat for f32 {
211 type SignedBitsType = i32;
212 const EXPONENT_FIELD_WIDTH: u32 = 8;
213 const MANTISSA_FIELD_WIDTH: u32 = 23;
218 impl PrimFloat for f64 {
220 type SignedBitsType = i64;
221 const EXPONENT_FIELD_WIDTH: u32 = 11;
222 const MANTISSA_FIELD_WIDTH: u32 = 52;