Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1 | /*===---- __clang_cuda_cmath.h - Device-side CUDA cmath support ------------=== |
| 2 | * |
| 3 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 4 | * of this software and associated documentation files (the "Software"), to deal |
| 5 | * in the Software without restriction, including without limitation the rights |
| 6 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 7 | * copies of the Software, and to permit persons to whom the Software is |
| 8 | * furnished to do so, subject to the following conditions: |
| 9 | * |
| 10 | * The above copyright notice and this permission notice shall be included in |
| 11 | * all copies or substantial portions of the Software. |
| 12 | * |
| 13 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 14 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 15 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 16 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 17 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 18 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 19 | * THE SOFTWARE. |
| 20 | * |
| 21 | *===-----------------------------------------------------------------------=== |
| 22 | */ |
| 23 | #ifndef __CLANG_CUDA_CMATH_H__ |
| 24 | #define __CLANG_CUDA_CMATH_H__ |
| 25 | #ifndef __CUDA__ |
| 26 | #error "This file is for CUDA compilation only." |
| 27 | #endif |
| 28 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 29 | // CUDA lets us use various std math functions on the device side. This file |
| 30 | // works in concert with __clang_cuda_math_forward_declares.h to make this work. |
| 31 | // |
| 32 | // Specifically, the forward-declares header declares __device__ overloads for |
| 33 | // these functions in the global namespace, then pulls them into namespace std |
| 34 | // with 'using' statements. Then this file implements those functions, after |
| 35 | // the implementations have been pulled in. |
| 36 | // |
| 37 | // It's important that we declare the functions in the global namespace and pull |
| 38 | // them into namespace std with using statements, as opposed to simply declaring |
| 39 | // these functions in namespace std, because our device functions need to |
| 40 | // overload the standard library functions, which may be declared in the global |
| 41 | // namespace or in std, depending on the degree of conformance of the stdlib |
| 42 | // implementation. Declaring in the global namespace and pulling into namespace |
| 43 | // std covers all of the known knowns. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 44 | |
| 45 | #define __DEVICE__ static __device__ __inline__ __attribute__((always_inline)) |
| 46 | |
| 47 | __DEVICE__ long long abs(long long __n) { return ::llabs(__n); } |
| 48 | __DEVICE__ long abs(long __n) { return ::labs(__n); } |
| 49 | __DEVICE__ float abs(float __x) { return ::fabsf(__x); } |
| 50 | __DEVICE__ double abs(double __x) { return ::fabs(__x); } |
| 51 | __DEVICE__ float acos(float __x) { return ::acosf(__x); } |
| 52 | __DEVICE__ float asin(float __x) { return ::asinf(__x); } |
| 53 | __DEVICE__ float atan(float __x) { return ::atanf(__x); } |
| 54 | __DEVICE__ float atan2(float __x, float __y) { return ::atan2f(__x, __y); } |
| 55 | __DEVICE__ float ceil(float __x) { return ::ceilf(__x); } |
| 56 | __DEVICE__ float cos(float __x) { return ::cosf(__x); } |
| 57 | __DEVICE__ float cosh(float __x) { return ::coshf(__x); } |
| 58 | __DEVICE__ float exp(float __x) { return ::expf(__x); } |
| 59 | __DEVICE__ float fabs(float __x) { return ::fabsf(__x); } |
| 60 | __DEVICE__ float floor(float __x) { return ::floorf(__x); } |
| 61 | __DEVICE__ float fmod(float __x, float __y) { return ::fmodf(__x, __y); } |
| 62 | __DEVICE__ int fpclassify(float __x) { |
| 63 | return __builtin_fpclassify(FP_NAN, FP_INFINITE, FP_NORMAL, FP_SUBNORMAL, |
| 64 | FP_ZERO, __x); |
| 65 | } |
| 66 | __DEVICE__ int fpclassify(double __x) { |
| 67 | return __builtin_fpclassify(FP_NAN, FP_INFINITE, FP_NORMAL, FP_SUBNORMAL, |
| 68 | FP_ZERO, __x); |
| 69 | } |
| 70 | __DEVICE__ float frexp(float __arg, int *__exp) { |
| 71 | return ::frexpf(__arg, __exp); |
| 72 | } |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 73 | __DEVICE__ bool isinf(float __x) { return ::__isinff(__x); } |
| 74 | __DEVICE__ bool isinf(double __x) { return ::__isinf(__x); } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 75 | __DEVICE__ bool isfinite(float __x) { return ::__finitef(__x); } |
| 76 | __DEVICE__ bool isfinite(double __x) { return ::__finite(__x); } |
| 77 | __DEVICE__ bool isgreater(float __x, float __y) { |
| 78 | return __builtin_isgreater(__x, __y); |
| 79 | } |
| 80 | __DEVICE__ bool isgreater(double __x, double __y) { |
| 81 | return __builtin_isgreater(__x, __y); |
| 82 | } |
| 83 | __DEVICE__ bool isgreaterequal(float __x, float __y) { |
| 84 | return __builtin_isgreaterequal(__x, __y); |
| 85 | } |
| 86 | __DEVICE__ bool isgreaterequal(double __x, double __y) { |
| 87 | return __builtin_isgreaterequal(__x, __y); |
| 88 | } |
| 89 | __DEVICE__ bool isless(float __x, float __y) { |
| 90 | return __builtin_isless(__x, __y); |
| 91 | } |
| 92 | __DEVICE__ bool isless(double __x, double __y) { |
| 93 | return __builtin_isless(__x, __y); |
| 94 | } |
| 95 | __DEVICE__ bool islessequal(float __x, float __y) { |
| 96 | return __builtin_islessequal(__x, __y); |
| 97 | } |
| 98 | __DEVICE__ bool islessequal(double __x, double __y) { |
| 99 | return __builtin_islessequal(__x, __y); |
| 100 | } |
| 101 | __DEVICE__ bool islessgreater(float __x, float __y) { |
| 102 | return __builtin_islessgreater(__x, __y); |
| 103 | } |
| 104 | __DEVICE__ bool islessgreater(double __x, double __y) { |
| 105 | return __builtin_islessgreater(__x, __y); |
| 106 | } |
| 107 | __DEVICE__ bool isnan(float __x) { return ::__isnanf(__x); } |
| 108 | __DEVICE__ bool isnan(double __x) { return ::__isnan(__x); } |
| 109 | __DEVICE__ bool isnormal(float __x) { return __builtin_isnormal(__x); } |
| 110 | __DEVICE__ bool isnormal(double __x) { return __builtin_isnormal(__x); } |
| 111 | __DEVICE__ bool isunordered(float __x, float __y) { |
| 112 | return __builtin_isunordered(__x, __y); |
| 113 | } |
| 114 | __DEVICE__ bool isunordered(double __x, double __y) { |
| 115 | return __builtin_isunordered(__x, __y); |
| 116 | } |
| 117 | __DEVICE__ float ldexp(float __arg, int __exp) { |
| 118 | return ::ldexpf(__arg, __exp); |
| 119 | } |
| 120 | __DEVICE__ float log(float __x) { return ::logf(__x); } |
| 121 | __DEVICE__ float log10(float __x) { return ::log10f(__x); } |
| 122 | __DEVICE__ float modf(float __x, float *__iptr) { return ::modff(__x, __iptr); } |
| 123 | __DEVICE__ float nexttoward(float __from, float __to) { |
| 124 | return __builtin_nexttowardf(__from, __to); |
| 125 | } |
| 126 | __DEVICE__ double nexttoward(double __from, double __to) { |
| 127 | return __builtin_nexttoward(__from, __to); |
| 128 | } |
| 129 | __DEVICE__ float pow(float __base, float __exp) { |
| 130 | return ::powf(__base, __exp); |
| 131 | } |
| 132 | __DEVICE__ float pow(float __base, int __iexp) { |
| 133 | return ::powif(__base, __iexp); |
| 134 | } |
| 135 | __DEVICE__ double pow(double __base, int __iexp) { |
| 136 | return ::powi(__base, __iexp); |
| 137 | } |
| 138 | __DEVICE__ bool signbit(float __x) { return ::__signbitf(__x); } |
| 139 | __DEVICE__ bool signbit(double __x) { return ::__signbit(__x); } |
| 140 | __DEVICE__ float sin(float __x) { return ::sinf(__x); } |
| 141 | __DEVICE__ float sinh(float __x) { return ::sinhf(__x); } |
| 142 | __DEVICE__ float sqrt(float __x) { return ::sqrtf(__x); } |
| 143 | __DEVICE__ float tan(float __x) { return ::tanf(__x); } |
| 144 | __DEVICE__ float tanh(float __x) { return ::tanhf(__x); } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 145 | |
| 146 | #undef __DEVICE__ |
| 147 | |
| 148 | #endif |