include/msvcrt/math.h

   1 /*
   2  * Math functions.
   3  *
   4  * Derived from the mingw header written by Colin Peters.
   5  * Modified for Wine use by Hans Leidekker.
   6  * This file is in the public domain.
   7  */
   8
   9 #ifndef __WINE_MATH_H
  10 #define __WINE_MATH_H
  11
  12 #include <corecrt.h>
  13
  14 #include <pshpack8.h>
  15
  16 #ifdef __cplusplus
  17 extern "C" {
  18 #endif
  19
  20 #define _DOMAIN         1       /* domain error in argument */
  21 #define _SING           2       /* singularity */
  22 #define _OVERFLOW       3       /* range overflow */
  23 #define _UNDERFLOW      4       /* range underflow */
  24 #define _TLOSS          5       /* total loss of precision */
  25 #define _PLOSS          6       /* partial loss of precision */
  26
  27 #ifndef _EXCEPTION_DEFINED
  28 #define _EXCEPTION_DEFINED
  29 struct _exception
  30 {
  31   int     type;
  32   char    *name;
  33   double  arg1;
  34   double  arg2;
  35   double  retval;
  36 };
  37 #endif /* _EXCEPTION_DEFINED */
  38
  39 #ifndef _COMPLEX_DEFINED
  40 #define _COMPLEX_DEFINED
  41 struct _complex
  42 {
  43   double x;      /* Real part */
  44   double y;      /* Imaginary part */
  45 };
  46 #endif /* _COMPLEX_DEFINED */
  47
  48 _ACRTIMP double __cdecl sin(double);
  49 _ACRTIMP double __cdecl cos(double);
  50 _ACRTIMP double __cdecl tan(double);
  51 _ACRTIMP double __cdecl sinh(double);
  52 _ACRTIMP double __cdecl cosh(double);
  53 _ACRTIMP double __cdecl tanh(double);
  54 _ACRTIMP double __cdecl asin(double);
  55 _ACRTIMP double __cdecl acos(double);
  56 _ACRTIMP double __cdecl atan(double);
  57 _ACRTIMP double __cdecl atan2(double, double);
  58 _ACRTIMP double __cdecl asinh(double);
  59 _ACRTIMP double __cdecl acosh(double);
  60 _ACRTIMP double __cdecl atanh(double);
  61 _ACRTIMP double __cdecl exp(double);
  62 _ACRTIMP double __cdecl log(double);
  63 _ACRTIMP double __cdecl log10(double);
  64 _ACRTIMP double __cdecl pow(double, double);
  65 _ACRTIMP double __cdecl sqrt(double);
  66 _ACRTIMP double __cdecl ceil(double);
  67 _ACRTIMP double __cdecl floor(double);
  68 _ACRTIMP double __cdecl fabs(double);
  69 _ACRTIMP double __cdecl ldexp(double, int);
  70 _ACRTIMP double __cdecl frexp(double, int*);
  71 _ACRTIMP double __cdecl modf(double, double*);
  72 _ACRTIMP double __cdecl fmod(double, double);
  73 _ACRTIMP double __cdecl fmin(double, double);
  74 _ACRTIMP double __cdecl fmax(double, double);
  75 _ACRTIMP double __cdecl erf(double);
  76 _ACRTIMP double __cdecl remquo(double, double, int*);
  77 _ACRTIMP float __cdecl remquof(float, float, int*);
  78
  79 _ACRTIMP double __cdecl _hypot(double, double);
  80 _ACRTIMP double __cdecl _j0(double);
  81 _ACRTIMP double __cdecl _j1(double);
  82 _ACRTIMP double __cdecl _jn(int, double);
  83 _ACRTIMP double __cdecl _y0(double);
  84 _ACRTIMP double __cdecl _y1(double);
  85 _ACRTIMP double __cdecl _yn(int, double);
  86
  87 _ACRTIMP double __cdecl cbrt(double);
  88 _ACRTIMP double __cdecl exp2(double);
  89 _ACRTIMP double __cdecl log2(double);
  90 _ACRTIMP double __cdecl rint(double);
  91 _ACRTIMP double __cdecl round(double);
  92 _ACRTIMP double __cdecl trunc(double);
  93
  94 _ACRTIMP float __cdecl cbrtf(float);
  95 _ACRTIMP float __cdecl exp2f(float);
  96 _ACRTIMP float __cdecl log2f(float);
  97 _ACRTIMP float __cdecl rintf(float);
  98 _ACRTIMP float __cdecl roundf(float);
  99 _ACRTIMP float __cdecl truncf(float);
 100
 101 _ACRTIMP __msvcrt_long __cdecl lrint(double);
 102 _ACRTIMP __msvcrt_long __cdecl lrintf(float);
 103 _ACRTIMP __msvcrt_long __cdecl lround(double);
 104 _ACRTIMP __msvcrt_long __cdecl lroundf(float);
 105
 106 _ACRTIMP double __cdecl scalbn(double,int);
 107 _ACRTIMP float  __cdecl scalbnf(float,int);
 108
 109 _ACRTIMP double __cdecl _copysign (double, double);
 110 _ACRTIMP double __cdecl _chgsign (double);
 111 _ACRTIMP double __cdecl _scalb(double, __msvcrt_long);
 112 _ACRTIMP double __cdecl _logb(double);
 113 _ACRTIMP double __cdecl _nextafter(double, double);
 114 _ACRTIMP int    __cdecl _finite(double);
 115 _ACRTIMP int    __cdecl _isnan(double);
 116 _ACRTIMP int    __cdecl _fpclass(double);
 117
 118 #ifndef __i386__
 119
 120 _ACRTIMP float __cdecl sinf(float);
 121 _ACRTIMP float __cdecl cosf(float);
 122 _ACRTIMP float __cdecl tanf(float);
 123 _ACRTIMP float __cdecl sinhf(float);
 124 _ACRTIMP float __cdecl coshf(float);
 125 _ACRTIMP float __cdecl tanhf(float);
 126 _ACRTIMP float __cdecl asinf(float);
 127 _ACRTIMP float __cdecl acosf(float);
 128 _ACRTIMP float __cdecl atanf(float);
 129 _ACRTIMP float __cdecl atan2f(float, float);
 130 _ACRTIMP float __cdecl atanhf(float);
 131 _ACRTIMP float __cdecl expf(float);
 132 _ACRTIMP float __cdecl logf(float);
 133 _ACRTIMP float __cdecl log10f(float);
 134 _ACRTIMP float __cdecl powf(float, float);
 135 _ACRTIMP float __cdecl sqrtf(float);
 136 _ACRTIMP float __cdecl ceilf(float);
 137 _ACRTIMP float __cdecl floorf(float);
 138 _ACRTIMP float __cdecl frexpf(float, int*);
 139 _ACRTIMP float __cdecl modff(float, float*);
 140 _ACRTIMP float __cdecl fmodf(float, float);
 141
 142 _ACRTIMP int   __cdecl _finitef(float);
 143 _ACRTIMP int   __cdecl _isnanf(float);
 144 _ACRTIMP int   __cdecl _fpclassf(float);
 145
 146 #else
 147
 148 static inline float sinf(float x) { return sin(x); }
 149 static inline float cosf(float x) { return cos(x); }
 150 static inline float tanf(float x) { return tan(x); }
 151 static inline float sinhf(float x) { return sinh(x); }
 152 static inline float coshf(float x) { return cosh(x); }
 153 static inline float tanhf(float x) { return tanh(x); }
 154 static inline float asinf(float x) { return asin(x); }
 155 static inline float acosf(float x) { return acos(x); }
 156 static inline float atanf(float x) { return atan(x); }
 157 static inline float atan2f(float x, float y) { return atan2(x, y); }
 158 static inline float expf(float x) { return exp(x); }
 159 static inline float logf(float x) { return log(x); }
 160 static inline float log10f(float x) { return log10(x); }
 161 static inline float powf(float x, float y) { return pow(x, y); }
 162 static inline float sqrtf(float x) { return sqrt(x); }
 163 static inline float ceilf(float x) { return ceil(x); }
 164 static inline float floorf(float x) { return floor(x); }
 165 static inline float frexpf(float x, int *y) { return frexp(x, y); }
 166 static inline float modff(float x, float *y) { double yd, ret = modf(x, &yd); *y = yd; return ret; }
 167 static inline float fmodf(float x, float y) { return fmod(x, y); }
 168
 169 static inline int   _finitef(float x) { return _finite(x); }
 170 static inline int   _isnanf(float x) { return _isnan(x); }
 171
 172 static inline int   _fpclassf(float x)
 173 {
 174     unsigned int ix = *(int*)&x;
 175     double d = x;
 176
 177     /* construct denormal double */
 178     if (!(ix >> 23 & 0xff) && (ix << 1))
 179     {
 180         unsigned __int64 id = (((unsigned __int64)ix >> 31) << 63) | 1;
 181         d = *(double*)&id;
 182     }
 183     return _fpclass(d);
 184 }
 185
 186 #endif
 187
 188 #if !defined(__i386__) && !defined(__x86_64__) && (_MSVCR_VER == 0 || _MSVCR_VER >= 110)
 189 _ACRTIMP float __cdecl fabsf(float);
 190 #else
 191 static inline float fabsf(float x) { return fabs(x); }
 192 #endif
 193
 194 #if !defined(__i386__) || _MSVCR_VER>=120
 195
 196 _ACRTIMP float __cdecl _chgsignf(float);
 197 _ACRTIMP float __cdecl _copysignf(float, float);
 198 _ACRTIMP float __cdecl _logbf(float);
 199 _ACRTIMP float __cdecl acoshf(float);
 200 _ACRTIMP float __cdecl asinhf(float);
 201 _ACRTIMP float __cdecl atanhf(float);
 202
 203 #else
 204
 205 static inline float _chgsignf(float x) { return _chgsign(x); }
 206 static inline float _copysignf(float x, float y) { return _copysign(x, y); }
 207 static inline float _logbf(float x) { return _logb(x); }
 208 static inline float acoshf(float x) { return acosh(x); }
 209 static inline float asinhf(float x) { return asinh(x); }
 210 static inline float atanhf(float x) { return atanh(x); }
 211
 212 #endif
 213
 214 static inline float ldexpf(float x, int y) { return ldexp(x, y); }
 215
 216 #ifdef _UCRT
 217 _ACRTIMP double __cdecl copysign(double, double);
 218 _ACRTIMP float  __cdecl copysignf(float, float);
 219 #else
 220 #define copysign(x,y)  _copysign(x,y)
 221 #define copysignf(x,y) _copysignf(x,y)
 222 #endif
 223
 224 _ACRTIMP double __cdecl nearbyint(double);
 225 _ACRTIMP float __cdecl nearbyintf(float);
 226 _ACRTIMP float __cdecl _hypotf(float, float);
 227 _ACRTIMP int __cdecl _matherr(struct _exception*);
 228 _ACRTIMP double __cdecl _cabs(struct _complex);
 229
 230 #if (defined(__GNUC__) && ((__GNUC__ > 3) || ((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)))) || defined(__clang__)
 231 # define INFINITY __builtin_inff()
 232 # define NAN      __builtin_nanf("")
 233 # define HUGE_VAL __builtin_huge_val()
 234 #else
 235 static const union {
 236     unsigned int __i;
 237     float __f;
 238 } __inff = { 0x7f800000 }, __nanf = { 0x7fc00000 };
 239 # define INFINITY (__inff.__f)
 240 # define NAN      (__nanf.__f)
 241 # define HUGE_VAL ((double)INFINITY)
 242 #endif
 243
 244 #define FP_INFINITE   1
 245 #define FP_NAN        2
 246 #define FP_NORMAL    -1
 247 #define FP_SUBNORMAL -2
 248 #define FP_ZERO       0
 249
 250 #define _C2 1
 251 #define FP_ILOGB0 (-0x7fffffff - _C2)
 252 #define FP_ILOGBNAN 0x7fffffff
 253
 254 #if _MSVCR_VER >= 120
 255
 256 _ACRTIMP short __cdecl _dclass(double);
 257 _ACRTIMP short __cdecl _fdclass(float);
 258 _ACRTIMP int   __cdecl _dsign(double);
 259 _ACRTIMP int   __cdecl _fdsign(float);
 260
 261 #define fpclassify(x) (sizeof(x) == sizeof(float) ? _fdclass(x) : _dclass(x))
 262 #define signbit(x)    (sizeof(x) == sizeof(float) ? _fdsign(x) : _dsign(x))
 263 #define isinf(x)      (fpclassify(x) == FP_INFINITE)
 264 #define isnan(x)      (fpclassify(x) == FP_NAN)
 265 #define isnormal(x)   (fpclassify(x) == FP_NORMAL)
 266 #define isfinite(x)   (fpclassify(x) <= 0)
 267
 268 #else
 269
 270 static inline int __isnanf(float x)
 271 {
 272     union { float x; unsigned int i; } u = { x };
 273     return (u.i & 0x7fffffff) > 0x7f800000;
 274 }
 275 static inline int __isnan(double x)
 276 {
 277     union { double x; unsigned __int64 i; } u = { x };
 278     return (u.i & ~0ull >> 1) > 0x7ffull << 52;
 279 }
 280 static inline int __isinff(float x)
 281 {
 282     union { float x; unsigned int i; } u = { x };
 283     return (u.i & 0x7fffffff) == 0x7f800000;
 284 }
 285 static inline int __isinf(double x)
 286 {
 287     union { double x; unsigned __int64 i; } u = { x };
 288     return (u.i & ~0ull >> 1) == 0x7ffull << 52;
 289 }
 290 static inline int __isnormalf(float x)
 291 {
 292     union { float x; unsigned int i; } u = { x };
 293     return ((u.i + 0x00800000) & 0x7fffffff) >= 0x01000000;
 294 }
 295 static inline int __isnormal(double x)
 296 {
 297     union { double x; unsigned __int64 i; } u = { x };
 298     return ((u.i + (1ull << 52)) & ~0ull >> 1) >= 1ull << 53;
 299 }
 300 static inline int __signbitf(float x)
 301 {
 302     union { float x; unsigned int i; } u = { x };
 303     return (int)(u.i >> 31);
 304 }
 305 static inline int __signbit(double x)
 306 {
 307     union { double x; unsigned __int64 i; } u = { x };
 308     return (int)(u.i >> 63);
 309 }
 310
 311 #define isinf(x)    (sizeof(x) == sizeof(float) ? __isinff(x) : __isinf(x))
 312 #define isnan(x)    (sizeof(x) == sizeof(float) ? __isnanf(x) : __isnan(x))
 313 #define isnormal(x) (sizeof(x) == sizeof(float) ? __isnormalf(x) : __isnormal(x))
 314 #define signbit(x)  (sizeof(x) == sizeof(float) ? __signbitf(x) : __signbit(x))
 315 #define isfinite(x) (!isinf(x) && !isnan(x))
 316
 317 #endif
 318
 319 #ifdef __cplusplus
 320 }
 321 #endif
 322
 323 #include <poppack.h>
 324
 325 #if !defined(__STRICT_ANSI__) || defined(_POSIX_C_SOURCE) || defined(_POSIX_SOURCE) || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE) || defined(_USE_MATH_DEFINES)
 326 #ifndef _MATH_DEFINES_DEFINED
 327 #define _MATH_DEFINES_DEFINED
 328 #define M_E         2.71828182845904523536
 329 #define M_LOG2E     1.44269504088896340736
 330 #define M_LOG10E    0.434294481903251827651
 331 #define M_LN2       0.693147180559945309417
 332 #define M_LN10      2.30258509299404568402
 333 #define M_PI        3.14159265358979323846
 334 #define M_PI_2      1.57079632679489661923
 335 #define M_PI_4      0.785398163397448309616
 336 #define M_1_PI      0.318309886183790671538
 337 #define M_2_PI      0.636619772367581343076
 338 #define M_2_SQRTPI  1.12837916709551257390
 339 #define M_SQRT2     1.41421356237309504880
 340 #define M_SQRT1_2   0.707106781186547524401
 341 #endif /* !_MATH_DEFINES_DEFINED */
 342 #endif /* _USE_MATH_DEFINES */
 343
 344 static inline double hypot( double x, double y ) { return _hypot( x, y ); }
 345 static inline double j0( double x ) { return _j0( x ); }
 346 static inline double j1( double x ) { return _j1( x ); }
 347 static inline double jn( int n, double x ) { return _jn( n, x ); }
 348 static inline double y0( double x ) { return _y0( x ); }
 349 static inline double y1( double x ) { return _y1( x ); }
 350 static inline double yn( int n, double x ) { return _yn( n, x ); }
 351
 352 static inline float hypotf( float x, float y ) { return _hypotf( x, y ); }
 353
 354 #endif /* __WINE_MATH_H */