math.h 1.9 KB

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  1. /*
  2. * math.h - mathematics
  3. */
  4. /* $Id$ */
  5. #ifndef _MATH_H
  6. #define _MATH_H
  7. extern double __huge_val;
  8. #define HUGE_VAL (__huge_val)
  9. extern int __IsNan(double d); /* test for Not A Number */
  10. extern double acos(double _x);
  11. extern double asin(double _x);
  12. extern double atan(double _x);
  13. extern double atan2(double _y, double _x);
  14. extern double cos(double _x);
  15. extern double sin(double _x);
  16. extern double tan(double _x);
  17. extern double cosh(double _x);
  18. extern double sinh(double _x);
  19. extern double tanh(double _x);
  20. extern double exp(double _x);
  21. extern double log(double _x);
  22. extern double log10(double _x);
  23. extern double sqrt(double _x);
  24. extern double ceil(double _x);
  25. extern double fabs(double _x);
  26. extern double floor(double _x);
  27. extern double pow(double _x, double _y);
  28. extern double frexp(double _x, int *_exp);
  29. extern double ldexp(double _x, int _exp);
  30. extern double modf(double _x, double *_iptr);
  31. extern double fmod(double _x, double _y);
  32. /* Some constants (Hart & Cheney). */
  33. #define M_PI 3.14159265358979323846264338327950288
  34. #define M_2PI 6.28318530717958647692528676655900576
  35. #define M_3PI_4 2.35619449019234492884698253745962716
  36. #define M_PI_2 1.57079632679489661923132169163975144
  37. #define M_3PI_8 1.17809724509617246442349126872981358
  38. #define M_PI_4 0.78539816339744830961566084581987572
  39. #define M_PI_8 0.39269908169872415480783042290993786
  40. #define M_1_PI 0.31830988618379067153776752674502872
  41. #define M_2_PI 0.63661977236758134307553505349005744
  42. #define M_4_PI 1.27323954473516268615107010698011488
  43. #define M_E 2.71828182845904523536028747135266250
  44. #define M_LOG2E 1.44269504088896340735992468100189213
  45. #define M_LOG10E 0.43429448190325182765112891891660508
  46. #define M_LN2 0.69314718055994530941723212145817657
  47. #define M_LN10 2.30258509299404568401799145468436421
  48. #define M_SQRT2 1.41421356237309504880168872420969808
  49. #define M_1_SQRT2 0.70710678118654752440084436210484904
  50. #define M_EULER 0.57721566490153286060651209008240243
  51. #endif /* _MATH_H */