6 #include <machine/ieeefp.h>
29 /* Natural log of 2 */
30 #define _M_LOG2_E 0.693147180559945309417
32 #if defined(__GNUC__) && \
33 ( (__GNUC__ >= 4) || \
34 ( (__GNUC__ >= 3) && defined(__GNUC_MINOR__) && (__GNUC_MINOR__ >= 3) ) )
36 /* gcc >= 3.3 implicitly defines builtins for HUGE_VALx values. */
39 # define HUGE_VAL (__builtin_huge_val())
43 # define HUGE_VALF (__builtin_huge_valf())
47 # define HUGE_VALL (__builtin_huge_vall())
51 # define INFINITY (__builtin_inff())
55 # define NAN (__builtin_nanf(""))
58 #else /* !gcc >= 3.3 */
60 /* No builtins. Use floating-point unions instead. Declare as an array
61 without bounds so no matter what small data support a port and/or
62 library has, the reference will be via the general method for accessing
66 extern __IMPORT const union __dmath __infinity[];
67 #define HUGE_VAL (__infinity[0].d)
71 extern __IMPORT const union __fmath __infinityf[];
72 #define HUGE_VALF (__infinityf[0].f)
76 extern __IMPORT const union __ldmath __infinityld[];
77 #define HUGE_VALL (__infinityld[0].ld)
80 #endif /* !gcc >= 3.3 */
82 /* Reentrant ANSI C functions. */
85 extern double atan _PARAMS((double));
86 extern double cos _PARAMS((double));
87 extern double sin _PARAMS((double));
88 extern double tan _PARAMS((double));
89 extern double tanh _PARAMS((double));
90 extern double frexp _PARAMS((double, int *));
91 extern double modf _PARAMS((double, double *));
92 extern double ceil _PARAMS((double));
93 extern double fabs _PARAMS((double));
94 extern double floor _PARAMS((double));
95 #endif /* ! defined (__math_68881) */
97 /* Non reentrant ANSI C functions. */
101 extern double acos _PARAMS((double));
102 extern double asin _PARAMS((double));
103 extern double atan2 _PARAMS((double, double));
104 extern double cosh _PARAMS((double));
105 extern double sinh _PARAMS((double));
106 extern double exp _PARAMS((double));
107 extern double ldexp _PARAMS((double, int));
108 extern double log _PARAMS((double));
109 extern double log10 _PARAMS((double));
110 extern double pow _PARAMS((double, double));
111 extern double sqrt _PARAMS((double));
112 extern double fmod _PARAMS((double, double));
113 #endif /* ! defined (__math_68881) */
114 #endif /* ! defined (_REENT_ONLY) */
116 #if !defined(__STRICT_ANSI__) || defined(__cplusplus) || __STDC_VERSION__ >= 199901L
118 /* ISO C99 types and macros. */
120 #ifndef FLT_EVAL_METHOD
121 #define FLT_EVAL_METHOD 0
122 typedef float float_t;
123 typedef double double_t;
124 #endif /* FLT_EVAL_METHOD */
127 #define FP_INFINITE 1
129 #define FP_SUBNORMAL 3
133 # define FP_ILOGB0 (-INT_MAX)
136 # define FP_ILOGBNAN INT_MAX
140 # define MATH_ERRNO 1
142 #ifndef MATH_ERREXCEPT
143 # define MATH_ERREXCEPT 2
145 #ifndef math_errhandling
146 # define math_errhandling MATH_ERRNO
149 extern int __isinff (float x);
150 extern int __isinfd (double x);
151 extern int __isnanf (float x);
152 extern int __isnand (double x);
153 extern int __fpclassifyf (float x);
154 extern int __fpclassifyd (double x);
155 extern int __signbitf (float x);
156 extern int __signbitd (double x);
158 #define fpclassify(x) \
159 (__extension__ ({__typeof__(x) __x = (x); \
160 (sizeof (__x) == sizeof (float)) ? __fpclassifyf(__x) : __fpclassifyd(__x);}))
163 #define isfinite(y) \
164 (__extension__ ({__typeof__(y) __y = (y); \
165 fpclassify(__y) != FP_INFINITE && fpclassify(__y) != FP_NAN;}))
168 /* Note: isinf and isnan were once functions in newlib that took double
169 * arguments. C99 specifies that these names are reserved for macros
170 * supporting multiple floating point types. Thus, they are
171 * now defined as macros. Implementations of the old functions
172 * taking double arguments still exist for compatibility purposes. */
175 (__extension__ ({__typeof__(x) __x = (x); \
176 (sizeof (__x) == sizeof (float)) ? __isinff(__x) : __isinfd(__x);}))
181 (__extension__ ({__typeof__(x) __x = (x); \
182 (sizeof (__x) == sizeof (float)) ? __isnanf(__x) : __isnand(__x);}))
185 #define isnormal(y) (fpclassify(y) == FP_NORMAL)
187 (__extension__ ({__typeof__(x) __x = (x); \
188 (sizeof(__x) == sizeof(float)) ? __signbitf(__x) : __signbitd(__x);}))
190 #define isgreater(x,y) \
191 (__extension__ ({__typeof__(x) __x = (x); __typeof__(y) __y = (y); \
192 !isunordered(__x,__y) && (__x > __y);}))
193 #define isgreaterequal(x,y) \
194 (__extension__ ({__typeof__(x) __x = (x); __typeof__(y) __y = (y); \
195 !isunordered(__x,__y) && (__x >= __y);}))
196 #define isless(x,y) \
197 (__extension__ ({__typeof__(x) __x = (x); __typeof__(y) __y = (y); \
198 !isunordered(__x,__y) && (__x < __y);}))
199 #define islessequal(x,y) \
200 (__extension__ ({__typeof__(x) __x = (x); __typeof__(y) __y = (y); \
201 !isunordered(__x,__y) && (__x <= __y);}))
202 #define islessgreater(x,y) \
203 (__extension__ ({__typeof__(x) __x = (x); __typeof__(y) __y = (y); \
204 !isunordered(__x,__y) && (__x < __y || __x > __y);}))
206 #define isunordered(a,b) \
207 (__extension__ ({__typeof__(a) __a = (a); __typeof__(b) __b = (b); \
208 fpclassify(__a) == FP_NAN || fpclassify(__b) == FP_NAN;}))
210 /* Non ANSI double precision functions. */
212 extern double infinity _PARAMS((void));
213 extern double nan _PARAMS((const char *));
214 extern int finite _PARAMS((double));
215 extern double copysign _PARAMS((double, double));
216 extern int ilogb _PARAMS((double));
218 extern double asinh _PARAMS((double));
219 extern double cbrt _PARAMS((double));
220 extern double nextafter _PARAMS((double, double));
221 extern double rint _PARAMS((double));
222 extern double scalbn _PARAMS((double, int));
224 extern double exp2 _PARAMS((double));
225 extern double scalbln _PARAMS((double, long int));
226 extern double tgamma _PARAMS((double));
227 extern double nearbyint _PARAMS((double));
228 extern long int lrint _PARAMS((double));
229 extern _LONG_LONG_TYPE int llrint _PARAMS((double));
230 extern double round _PARAMS((double));
231 extern long int lround _PARAMS((double));
232 extern long long int llround _PARAMS((double));
233 extern double trunc _PARAMS((double));
234 extern double remquo _PARAMS((double, double, int *));
235 extern double fdim _PARAMS((double, double));
236 extern double fmax _PARAMS((double, double));
237 extern double fmin _PARAMS((double, double));
238 extern double fma _PARAMS((double, double, double));
241 extern double log1p _PARAMS((double));
242 extern double expm1 _PARAMS((double));
243 #endif /* ! defined (__math_68881) */
246 extern double acosh _PARAMS((double));
247 extern double atanh _PARAMS((double));
248 extern double remainder _PARAMS((double, double));
249 extern double gamma _PARAMS((double));
250 extern double lgamma _PARAMS((double));
251 extern double erf _PARAMS((double));
252 extern double erfc _PARAMS((double));
253 extern double log2 _PARAMS((double));
254 #define log2(x) (log (x) / _M_LOG2_E)
257 extern double hypot _PARAMS((double, double));
260 #endif /* ! defined (_REENT_ONLY) */
262 /* Single precision versions of ANSI functions. */
264 extern float atanf _PARAMS((float));
265 extern float cosf _PARAMS((float));
266 extern float sinf _PARAMS((float));
267 extern float tanf _PARAMS((float));
268 extern float tanhf _PARAMS((float));
269 extern float frexpf _PARAMS((float, int *));
270 extern float modff _PARAMS((float, float *));
271 extern float ceilf _PARAMS((float));
272 extern float fabsf _PARAMS((float));
273 extern float floorf _PARAMS((float));
276 extern float acosf _PARAMS((float));
277 extern float asinf _PARAMS((float));
278 extern float atan2f _PARAMS((float, float));
279 extern float coshf _PARAMS((float));
280 extern float sinhf _PARAMS((float));
281 extern float expf _PARAMS((float));
282 extern float ldexpf _PARAMS((float, int));
283 extern float logf _PARAMS((float));
284 extern float log10f _PARAMS((float));
285 extern float powf _PARAMS((float, float));
286 extern float sqrtf _PARAMS((float));
287 extern float fmodf _PARAMS((float, float));
288 #endif /* ! defined (_REENT_ONLY) */
290 /* Other single precision functions. */
292 extern float exp2f _PARAMS((float));
293 extern float scalblnf _PARAMS((float, long int));
294 extern float tgammaf _PARAMS((float));
295 extern float nearbyintf _PARAMS((float));
296 extern long int lrintf _PARAMS((float));
297 extern _LONG_LONG_TYPE llrintf _PARAMS((float));
298 extern float roundf _PARAMS((float));
299 extern long int lroundf _PARAMS((float));
300 extern long long int llroundf _PARAMS((float));
301 extern float truncf _PARAMS((float));
302 extern float remquof _PARAMS((float, float, int *));
303 extern float fdimf _PARAMS((float, float));
304 extern float fmaxf _PARAMS((float, float));
305 extern float fminf _PARAMS((float, float));
306 extern float fmaf _PARAMS((float, float, float));
308 extern float infinityf _PARAMS((void));
309 extern float nanf _PARAMS((const char *));
310 extern int isnanf _PARAMS((float));
311 extern int isinff _PARAMS((float));
312 extern int finitef _PARAMS((float));
313 extern float copysignf _PARAMS((float, float));
314 extern int ilogbf _PARAMS((float));
316 extern float asinhf _PARAMS((float));
317 extern float cbrtf _PARAMS((float));
318 extern float nextafterf _PARAMS((float, float));
319 extern float rintf _PARAMS((float));
320 extern float scalbnf _PARAMS((float, int));
321 extern float log1pf _PARAMS((float));
322 extern float expm1f _PARAMS((float));
325 extern float acoshf _PARAMS((float));
326 extern float atanhf _PARAMS((float));
327 extern float remainderf _PARAMS((float, float));
328 extern float gammaf _PARAMS((float));
329 extern float lgammaf _PARAMS((float));
330 extern float erff _PARAMS((float));
331 extern float erfcf _PARAMS((float));
332 extern float log2f _PARAMS((float));
333 #define log2f(x) (logf (x) / (float) _M_LOG2_E)
334 extern float hypotf _PARAMS((float, float));
335 #endif /* ! defined (_REENT_ONLY) */
337 /* On platforms where long double is as wide as double. */
339 /* Reentrant ANSI C functions. */
341 extern long double atanl _PARAMS((long double));
342 extern long double cosl _PARAMS((long double));
343 extern long double sinl _PARAMS((long double));
344 extern long double tanl _PARAMS((long double));
345 extern long double tanhl _PARAMS((long double));
346 extern long double frexpl _PARAMS((long double value, int *));
347 extern long double modfl _PARAMS((long double, long double *));
348 extern long double ceill _PARAMS((long double));
349 extern long double fabsl _PARAMS((long double));
350 extern long double floorl _PARAMS((long double));
351 extern long double log1pl _PARAMS((long double));
352 extern long double expm1l _PARAMS((long double));
353 #endif /* ! defined (__math_68881) */
354 /* Non reentrant ANSI C functions. */
357 extern long double acosl _PARAMS((long double));
358 extern long double asinl _PARAMS((long double));
359 extern long double atan2l _PARAMS((long double, long double));
360 extern long double coshl _PARAMS((long double));
361 extern long double sinhl _PARAMS((long double));
362 extern long double expl _PARAMS((long double));
363 extern long double ldexpl _PARAMS((long double, int));
364 extern long double logl _PARAMS((long double));
365 extern long double log10l _PARAMS((long double));
366 extern long double powl _PARAMS((long double, long double));
367 extern long double sqrtl _PARAMS((long double));
368 extern long double fmodl _PARAMS((long double, long double));
369 extern long double hypotl _PARAMS((long double, long double));
370 #endif /* ! defined (__math_68881) */
371 #endif /* ! defined (_REENT_ONLY) */
372 extern long double copysignl _PARAMS((long double, long double));
373 extern long double nanl _PARAMS((const char *));
374 extern int ilogbl _PARAMS((long double));
375 extern long double asinhl _PARAMS((long double));
376 extern long double cbrtl _PARAMS((long double));
377 extern long double nextafterl _PARAMS((long double, long double));
378 extern long double rintl _PARAMS((long double));
379 extern long double scalbnl _PARAMS((long double, int));
380 extern long double exp2l _PARAMS((long double));
381 extern long double scalblnl _PARAMS((long double, long));
382 extern long double tgammal _PARAMS((long double));
383 extern long double nearbyintl _PARAMS((long double));
384 extern long int lrintl _PARAMS((long double));
385 extern long double roundl _PARAMS((long double));
386 extern long lroundl _PARAMS((long double));
387 extern _LONG_LONG_TYPE int llroundl _PARAMS((long double));
388 extern long double truncl _PARAMS((long double));
389 extern long double remquol _PARAMS((long double, long double, int *));
390 extern long double fdiml _PARAMS((long double, long double));
391 extern long double fmaxl _PARAMS((long double, long double));
392 extern long double fminl _PARAMS((long double, long double));
393 extern long double fmal _PARAMS((long double, long double, long double));
395 extern long double acoshl _PARAMS((long double));
396 extern long double atanhl _PARAMS((long double));
397 extern long double remainderl _PARAMS((long double, long double));
398 extern long double lgammal _PARAMS((long double));
399 extern long double erfl _PARAMS((long double));
400 extern long double erfcl _PARAMS((long double));
401 #endif /* ! defined (_REENT_ONLY) */
402 #else /* !_LDBL_EQ_DBL */
404 /* Other long double precision functions. */
405 extern _LONG_DOUBLE rintl _PARAMS((_LONG_DOUBLE));
406 extern long int lrintl _PARAMS((_LONG_DOUBLE));
407 extern _LONG_LONG_TYPE llrintl _PARAMS((_LONG_DOUBLE));
408 #endif /* __i386__ */
409 #endif /* !_LDBL_EQ_DBL */
411 #endif /* !defined (__STRICT_ANSI__) || defined(__cplusplus) || __STDC_VERSION__ >= 199901L */
413 #if !defined (__STRICT_ANSI__) || defined(__cplusplus)
415 extern double cabs();
416 extern double drem _PARAMS((double, double));
417 extern void sincos _PARAMS((double, double *, double *));
418 extern double gamma_r _PARAMS((double, int *));
419 extern double lgamma_r _PARAMS((double, int *));
421 extern double y0 _PARAMS((double));
422 extern double y1 _PARAMS((double));
423 extern double yn _PARAMS((int, double));
424 extern double j0 _PARAMS((double));
425 extern double j1 _PARAMS((double));
426 extern double jn _PARAMS((int, double));
428 extern float cabsf();
429 extern float dremf _PARAMS((float, float));
430 extern void sincosf _PARAMS((float, float *, float *));
431 extern float gammaf_r _PARAMS((float, int *));
432 extern float lgammaf_r _PARAMS((float, int *));
434 extern float y0f _PARAMS((float));
435 extern float y1f _PARAMS((float));
436 extern float ynf _PARAMS((int, float));
437 extern float j0f _PARAMS((float));
438 extern float j1f _PARAMS((float));
439 extern float jnf _PARAMS((int, float));
443 extern double exp10 _PARAMS((double));
446 extern double pow10 _PARAMS((double));
449 extern float exp10f _PARAMS((float));
452 extern float pow10f _PARAMS((float));
455 #endif /* !defined (__STRICT_ANSI__) || defined(__cplusplus) */
457 #ifndef __STRICT_ANSI__
459 /* The gamma functions use a global variable, signgam. */
461 #define signgam (*__signgam())
462 extern int *__signgam _PARAMS((void));
463 #endif /* ! defined (_REENT_ONLY) */
465 #define __signgam_r(ptr) _REENT_SIGNGAM(ptr)
467 /* The exception structure passed to the matherr routine. */
468 /* We have a problem when using C++ since `exception' is a reserved
485 extern int matherr _PARAMS((struct __exception *e));
487 extern int matherr _PARAMS((struct exception *e));
490 /* Values for the type field of struct exception. */
499 /* Useful constants. */
501 #define MAXFLOAT 3.40282347e+38F
503 #define M_E 2.7182818284590452354
504 #define M_LOG2E 1.4426950408889634074
505 #define M_LOG10E 0.43429448190325182765
506 #define M_LN2 0.69314718055994530942
507 #define M_LN10 2.30258509299404568402
508 #define M_PI 3.14159265358979323846
509 #define M_TWOPI (M_PI * 2.0)
510 #define M_PI_2 1.57079632679489661923
511 #define M_PI_4 0.78539816339744830962
512 #define M_3PI_4 2.3561944901923448370E0
513 #define M_SQRTPI 1.77245385090551602792981
514 #define M_1_PI 0.31830988618379067154
515 #define M_2_PI 0.63661977236758134308
516 #define M_2_SQRTPI 1.12837916709551257390
517 #define M_SQRT2 1.41421356237309504880
518 #define M_SQRT1_2 0.70710678118654752440
519 #define M_LN2LO 1.9082149292705877000E-10
520 #define M_LN2HI 6.9314718036912381649E-1
521 #define M_SQRT3 1.73205080756887719000
522 #define M_IVLN10 0.43429448190325182765 /* 1 / log(10) */
523 #define M_LOG2_E _M_LOG2_E
524 #define M_INVLN2 1.4426950408889633870E0 /* 1 / log(2) */
526 /* Global control over fdlibm error handling. */
528 enum __fdlibm_version
536 #define _LIB_VERSION_TYPE enum __fdlibm_version
537 #define _LIB_VERSION __fdlib_version
539 extern __IMPORT _LIB_VERSION_TYPE _LIB_VERSION;
541 #define _IEEE_ __fdlibm_ieee
542 #define _SVID_ __fdlibm_svid
543 #define _XOPEN_ __fdlibm_xopen
544 #define _POSIX_ __fdlibm_posix
546 #endif /* ! defined (__STRICT_ANSI__) */
551 #include <machine/fastmath.h>
554 #endif /* _MATH_H_ */