Spaces:
Running
Running
File size: 3,832 Bytes
c61ccee |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 |
#pragma once
#include <c10/macros/Macros.h>
#include <c10/util/BFloat16.h>
#include <c10/util/Half.h>
C10_CLANG_DIAGNOSTIC_PUSH()
#if C10_CLANG_HAS_WARNING("-Wimplicit-float-conversion")
C10_CLANG_DIAGNOSTIC_IGNORE("-Wimplicit-float-conversion")
#endif
namespace c10 {
// TODO: Replace me with inline constexpr variable when C++17 becomes available
namespace detail {
template <typename T>
C10_HOST_DEVICE inline constexpr T e() {
return static_cast<T>(2.718281828459045235360287471352662);
}
template <typename T>
C10_HOST_DEVICE inline constexpr T euler() {
return static_cast<T>(0.577215664901532860606512090082402);
}
template <typename T>
C10_HOST_DEVICE inline constexpr T frac_1_pi() {
return static_cast<T>(0.318309886183790671537767526745028);
}
template <typename T>
C10_HOST_DEVICE inline constexpr T frac_1_sqrt_pi() {
return static_cast<T>(0.564189583547756286948079451560772);
}
template <typename T>
C10_HOST_DEVICE inline constexpr T frac_sqrt_2() {
return static_cast<T>(0.707106781186547524400844362104849);
}
template <typename T>
C10_HOST_DEVICE inline constexpr T frac_sqrt_3() {
return static_cast<T>(0.577350269189625764509148780501957);
}
template <typename T>
C10_HOST_DEVICE inline constexpr T golden_ratio() {
return static_cast<T>(1.618033988749894848204586834365638);
}
template <typename T>
C10_HOST_DEVICE inline constexpr T ln_10() {
return static_cast<T>(2.302585092994045684017991454684364);
}
template <typename T>
C10_HOST_DEVICE inline constexpr T ln_2() {
return static_cast<T>(0.693147180559945309417232121458176);
}
template <typename T>
C10_HOST_DEVICE inline constexpr T log_10_e() {
return static_cast<T>(0.434294481903251827651128918916605);
}
template <typename T>
C10_HOST_DEVICE inline constexpr T log_2_e() {
return static_cast<T>(1.442695040888963407359924681001892);
}
template <typename T>
C10_HOST_DEVICE inline constexpr T pi() {
return static_cast<T>(3.141592653589793238462643383279502);
}
template <typename T>
C10_HOST_DEVICE inline constexpr T sqrt_2() {
return static_cast<T>(1.414213562373095048801688724209698);
}
template <typename T>
C10_HOST_DEVICE inline constexpr T sqrt_3() {
return static_cast<T>(1.732050807568877293527446341505872);
}
template <>
C10_HOST_DEVICE inline constexpr BFloat16 pi<BFloat16>() {
// According to
// https://en.wikipedia.org/wiki/Bfloat16_floating-point_format#Special_values
// pi is encoded as 4049
return BFloat16(0x4049, BFloat16::from_bits());
}
template <>
C10_HOST_DEVICE inline constexpr Half pi<Half>() {
return Half(0x4248, Half::from_bits());
}
} // namespace detail
template <typename T>
constexpr T e = c10::detail::e<T>();
template <typename T>
constexpr T euler = c10::detail::euler<T>();
template <typename T>
constexpr T frac_1_pi = c10::detail::frac_1_pi<T>();
template <typename T>
constexpr T frac_1_sqrt_pi = c10::detail::frac_1_sqrt_pi<T>();
template <typename T>
constexpr T frac_sqrt_2 = c10::detail::frac_sqrt_2<T>();
template <typename T>
constexpr T frac_sqrt_3 = c10::detail::frac_sqrt_3<T>();
template <typename T>
constexpr T golden_ratio = c10::detail::golden_ratio<T>();
template <typename T>
constexpr T ln_10 = c10::detail::ln_10<T>();
template <typename T>
constexpr T ln_2 = c10::detail::ln_2<T>();
template <typename T>
constexpr T log_10_e = c10::detail::log_10_e<T>();
template <typename T>
constexpr T log_2_e = c10::detail::log_2_e<T>();
template <typename T>
constexpr T pi = c10::detail::pi<T>();
template <typename T>
constexpr T sqrt_2 = c10::detail::sqrt_2<T>();
template <typename T>
constexpr T sqrt_3 = c10::detail::sqrt_3<T>();
} // namespace c10
C10_CLANG_DIAGNOSTIC_POP()
|