clang/lib/Headers/__clang_cuda_math_forward_declares.h

   1 /*===- __clang_math_forward_declares.h - Prototypes of __device__ math fns --===
   2  *
   3  * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4  * See https://llvm.org/LICENSE.txt for license information.
   5  * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6  *
   7  *===-----------------------------------------------------------------------===
   8  */
   9 #ifndef __CLANG__CUDA_MATH_FORWARD_DECLARES_H__
  10 #define __CLANG__CUDA_MATH_FORWARD_DECLARES_H__
  11 #if !defined(__CUDA__) && !__HIP__
  12 #error "This file is for CUDA/HIP compilation only."
  13 #endif
  14
  15 // This file forward-declares of some math functions we (or the CUDA headers)
  16 // will define later.  We need to do this, and do it before cmath is included,
  17 // because the standard library may have constexpr math functions.  In the
  18 // absence of a prior __device__ decl, those constexpr functions may become
  19 // implicitly host+device.  host+device functions can't be overloaded, so that
  20 // would preclude the use of our own __device__ overloads for these functions.
  21
  22 #pragma push_macro("__DEVICE__")
  23 #define __DEVICE__                                                             \
  24   static __inline__ __attribute__((always_inline)) __attribute__((device))
  25
  26 __DEVICE__ long abs(long);
  27 __DEVICE__ long long abs(long long);
  28 __DEVICE__ double abs(double);
  29 __DEVICE__ float abs(float);
  30 __DEVICE__ int abs(int);
  31 __DEVICE__ double acos(double);
  32 __DEVICE__ float acos(float);
  33 __DEVICE__ double acosh(double);
  34 __DEVICE__ float acosh(float);
  35 __DEVICE__ double asin(double);
  36 __DEVICE__ float asin(float);
  37 __DEVICE__ double asinh(double);
  38 __DEVICE__ float asinh(float);
  39 __DEVICE__ double atan2(double, double);
  40 __DEVICE__ float atan2(float, float);
  41 __DEVICE__ double atan(double);
  42 __DEVICE__ float atan(float);
  43 __DEVICE__ double atanh(double);
  44 __DEVICE__ float atanh(float);
  45 __DEVICE__ double cbrt(double);
  46 __DEVICE__ float cbrt(float);
  47 __DEVICE__ double ceil(double);
  48 __DEVICE__ float ceil(float);
  49 __DEVICE__ double copysign(double, double);
  50 __DEVICE__ float copysign(float, float);
  51 __DEVICE__ double cos(double);
  52 __DEVICE__ float cos(float);
  53 __DEVICE__ double cosh(double);
  54 __DEVICE__ float cosh(float);
  55 __DEVICE__ double erfc(double);
  56 __DEVICE__ float erfc(float);
  57 __DEVICE__ double erf(double);
  58 __DEVICE__ float erf(float);
  59 __DEVICE__ double exp2(double);
  60 __DEVICE__ float exp2(float);
  61 __DEVICE__ double exp(double);
  62 __DEVICE__ float exp(float);
  63 __DEVICE__ double expm1(double);
  64 __DEVICE__ float expm1(float);
  65 __DEVICE__ double fabs(double);
  66 __DEVICE__ float fabs(float);
  67 __DEVICE__ double fdim(double, double);
  68 __DEVICE__ float fdim(float, float);
  69 __DEVICE__ double floor(double);
  70 __DEVICE__ float floor(float);
  71 __DEVICE__ double fma(double, double, double);
  72 __DEVICE__ float fma(float, float, float);
  73 __DEVICE__ double fmax(double, double);
  74 __DEVICE__ float fmax(float, float);
  75 __DEVICE__ double fmin(double, double);
  76 __DEVICE__ float fmin(float, float);
  77 __DEVICE__ double fmod(double, double);
  78 __DEVICE__ float fmod(float, float);
  79 __DEVICE__ int fpclassify(double);
  80 __DEVICE__ int fpclassify(float);
  81 __DEVICE__ double frexp(double, int *);
  82 __DEVICE__ float frexp(float, int *);
  83 __DEVICE__ double hypot(double, double);
  84 __DEVICE__ float hypot(float, float);
  85 __DEVICE__ int ilogb(double);
  86 __DEVICE__ int ilogb(float);
  87 #ifdef _MSC_VER
  88 __DEVICE__ bool isfinite(long double);
  89 #endif
  90 __DEVICE__ bool isfinite(double);
  91 __DEVICE__ bool isfinite(float);
  92 __DEVICE__ bool isgreater(double, double);
  93 __DEVICE__ bool isgreaterequal(double, double);
  94 __DEVICE__ bool isgreaterequal(float, float);
  95 __DEVICE__ bool isgreater(float, float);
  96 #ifdef _MSC_VER
  97 __DEVICE__ bool isinf(long double);
  98 #endif
  99 __DEVICE__ bool isinf(double);
 100 __DEVICE__ bool isinf(float);
 101 __DEVICE__ bool isless(double, double);
 102 __DEVICE__ bool islessequal(double, double);
 103 __DEVICE__ bool islessequal(float, float);
 104 __DEVICE__ bool isless(float, float);
 105 __DEVICE__ bool islessgreater(double, double);
 106 __DEVICE__ bool islessgreater(float, float);
 107 #ifdef _MSC_VER
 108 __DEVICE__ bool isnan(long double);
 109 #endif
 110 __DEVICE__ bool isnan(double);
 111 __DEVICE__ bool isnan(float);
 112 __DEVICE__ bool isnormal(double);
 113 __DEVICE__ bool isnormal(float);
 114 __DEVICE__ bool isunordered(double, double);
 115 __DEVICE__ bool isunordered(float, float);
 116 __DEVICE__ long labs(long);
 117 __DEVICE__ double ldexp(double, int);
 118 __DEVICE__ float ldexp(float, int);
 119 __DEVICE__ double lgamma(double);
 120 __DEVICE__ float lgamma(float);
 121 __DEVICE__ long long llabs(long long);
 122 __DEVICE__ long long llrint(double);
 123 __DEVICE__ long long llrint(float);
 124 __DEVICE__ double log10(double);
 125 __DEVICE__ float log10(float);
 126 __DEVICE__ double log1p(double);
 127 __DEVICE__ float log1p(float);
 128 __DEVICE__ double log2(double);
 129 __DEVICE__ float log2(float);
 130 __DEVICE__ double logb(double);
 131 __DEVICE__ float logb(float);
 132 __DEVICE__ double log(double);
 133 __DEVICE__ float log(float);
 134 __DEVICE__ long lrint(double);
 135 __DEVICE__ long lrint(float);
 136 __DEVICE__ long lround(double);
 137 __DEVICE__ long lround(float);
 138 __DEVICE__ long long llround(float); // No llround(double).
 139 __DEVICE__ double modf(double, double *);
 140 __DEVICE__ float modf(float, float *);
 141 __DEVICE__ double nan(const char *);
 142 __DEVICE__ float nanf(const char *);
 143 __DEVICE__ double nearbyint(double);
 144 __DEVICE__ float nearbyint(float);
 145 __DEVICE__ double nextafter(double, double);
 146 __DEVICE__ float nextafter(float, float);
 147 __DEVICE__ double pow(double, double);
 148 __DEVICE__ double pow(double, int);
 149 __DEVICE__ float pow(float, float);
 150 __DEVICE__ float pow(float, int);
 151 __DEVICE__ double remainder(double, double);
 152 __DEVICE__ float remainder(float, float);
 153 __DEVICE__ double remquo(double, double, int *);
 154 __DEVICE__ float remquo(float, float, int *);
 155 __DEVICE__ double rint(double);
 156 __DEVICE__ float rint(float);
 157 __DEVICE__ double round(double);
 158 __DEVICE__ float round(float);
 159 __DEVICE__ double scalbln(double, long);
 160 __DEVICE__ float scalbln(float, long);
 161 __DEVICE__ double scalbn(double, int);
 162 __DEVICE__ float scalbn(float, int);
 163 #ifdef _MSC_VER
 164 __DEVICE__ bool signbit(long double);
 165 #endif
 166 __DEVICE__ bool signbit(double);
 167 __DEVICE__ bool signbit(float);
 168 __DEVICE__ double sin(double);
 169 __DEVICE__ float sin(float);
 170 __DEVICE__ double sinh(double);
 171 __DEVICE__ float sinh(float);
 172 __DEVICE__ double sqrt(double);
 173 __DEVICE__ float sqrt(float);
 174 __DEVICE__ double tan(double);
 175 __DEVICE__ float tan(float);
 176 __DEVICE__ double tanh(double);
 177 __DEVICE__ float tanh(float);
 178 __DEVICE__ double tgamma(double);
 179 __DEVICE__ float tgamma(float);
 180 __DEVICE__ double trunc(double);
 181 __DEVICE__ float trunc(float);
 182
 183 // Notably missing above is nexttoward, which we don't define on
 184 // the device side because libdevice doesn't give us an implementation, and we
 185 // don't want to be in the business of writing one ourselves.
 186
 187 // We need to define these overloads in exactly the namespace our standard
 188 // library uses (including the right inline namespace), otherwise they won't be
 189 // picked up by other functions in the standard library (e.g. functions in
 190 // <complex>).  Thus the ugliness below.
 191 #ifdef _LIBCPP_BEGIN_NAMESPACE_STD
 192 _LIBCPP_BEGIN_NAMESPACE_STD
 193 #else
 194 namespace std {
 195 #ifdef _GLIBCXX_BEGIN_NAMESPACE_VERSION
 196 _GLIBCXX_BEGIN_NAMESPACE_VERSION
 197 #endif
 198 #endif
 199
 200 using ::abs;
 201 using ::acos;
 202 using ::acosh;
 203 using ::asin;
 204 using ::asinh;
 205 using ::atan;
 206 using ::atan2;
 207 using ::atanh;
 208 using ::cbrt;
 209 using ::ceil;
 210 using ::copysign;
 211 using ::cos;
 212 using ::cosh;
 213 using ::erf;
 214 using ::erfc;
 215 using ::exp;
 216 using ::exp2;
 217 using ::expm1;
 218 using ::fabs;
 219 using ::fdim;
 220 using ::floor;
 221 using ::fma;
 222 using ::fmax;
 223 using ::fmin;
 224 using ::fmod;
 225 using ::fpclassify;
 226 using ::frexp;
 227 using ::hypot;
 228 using ::ilogb;
 229 using ::isfinite;
 230 using ::isgreater;
 231 using ::isgreaterequal;
 232 using ::isinf;
 233 using ::isless;
 234 using ::islessequal;
 235 using ::islessgreater;
 236 using ::isnan;
 237 using ::isnormal;
 238 using ::isunordered;
 239 using ::labs;
 240 using ::ldexp;
 241 using ::lgamma;
 242 using ::llabs;
 243 using ::llrint;
 244 using ::log;
 245 using ::log10;
 246 using ::log1p;
 247 using ::log2;
 248 using ::logb;
 249 using ::lrint;
 250 using ::lround;
 251 using ::llround;
 252 using ::modf;
 253 using ::nan;
 254 using ::nanf;
 255 using ::nearbyint;
 256 using ::nextafter;
 257 using ::pow;
 258 using ::remainder;
 259 using ::remquo;
 260 using ::rint;
 261 using ::round;
 262 using ::scalbln;
 263 using ::scalbn;
 264 using ::signbit;
 265 using ::sin;
 266 using ::sinh;
 267 using ::sqrt;
 268 using ::tan;
 269 using ::tanh;
 270 using ::tgamma;
 271 using ::trunc;
 272
 273 #ifdef _LIBCPP_END_NAMESPACE_STD
 274 _LIBCPP_END_NAMESPACE_STD
 275 #else
 276 #ifdef _GLIBCXX_BEGIN_NAMESPACE_VERSION
 277 _GLIBCXX_END_NAMESPACE_VERSION
 278 #endif
 279 } // namespace std
 280 #endif
 281
 282 #pragma pop_macro("__DEVICE__")
 283
 284 #endif