rockbox/firmware/include/math.h

/* math.h -- Definitions for the math floating point package.  */

#ifndef  _MATH_H_
#ifdef __cplusplus
extern "C" {
#endif
#define  _MATH_H_

#include "_ansi.h"

#ifndef __STRICT_ANSI__

#define __signgam_r(ptr) ((ptr)->_new._reent._gamma_signgam)

/* Values for the type field of struct exception.  */

#define DOMAIN 1
#define SING 2
#define OVERFLOW 3
#define UNDERFLOW 4
#define TLOSS 5
#define PLOSS 6

/* Useful constants.  */

#define M_E             2.7182818284590452354
#define M_LOG2E         1.4426950408889634074
#define M_LOG10E        0.43429448190325182765
#define M_LN2           0.69314718055994530942
#define M_LN10          2.30258509299404568402
#define M_PI            3.14159265358979323846
#define M_TWOPI         (M_PI * 2.0)
#define M_PI_2          1.57079632679489661923
#define M_PI_4          0.78539816339744830962
#define M_3PI_4         2.3561944901923448370E0
#define M_SQRTPI        1.77245385090551602792981
#define M_1_PI          0.31830988618379067154
#define M_2_PI          0.63661977236758134308
#define M_2_SQRTPI      1.12837916709551257390
#define M_SQRT2         1.41421356237309504880
#define M_SQRT1_2       0.70710678118654752440
#define M_LN2LO         1.9082149292705877000E-10
#define M_LN2HI         6.9314718036912381649E-1
#define M_SQRT3         1.73205080756887719000
#define M_IVLN10        0.43429448190325182765 /* 1 / log(10) */
#define M_LOG2_E        0.693147180559945309417
#define M_INVLN2        1.4426950408889633870E0  /* 1 / log(2) */

#endif /* ! defined (__STRICT_ANSI__) */

#ifdef __cplusplus
}
#endif
#endif /* _MATH_H_ */