include/math.h

   1 /* The <math.h> header contains prototypes for mathematical functions. */
   2
   3 #ifndef _MATH_H
   4 #define _MATH_H
   5
   6 #ifndef _ANSI_H
   7 #include <ansi.h>
   8 #endif
   9
  10 #define INFINITY        (__infinity())
  11 #define NAN             (__qnan())
  12 #define HUGE_VAL        INFINITY
  13
  14 /* Function Prototypes. */
  15 _PROTOTYPE( double __infinity,  (void)                                  );
  16 _PROTOTYPE( double __qnan,      (void)                                  );
  17
  18 _PROTOTYPE( double acos,  (double _x)                                   );
  19 _PROTOTYPE( double asin,  (double _x)                                   );
  20 _PROTOTYPE( double atan,  (double _x)                                   );
  21 _PROTOTYPE( double atan2, (double _y, double _x)                        );
  22 _PROTOTYPE( double ceil,  (double _x)                                   );
  23 _PROTOTYPE( double cos,   (double _x)                                   );
  24 _PROTOTYPE( double cosh,  (double _x)                                   );
  25 _PROTOTYPE( double exp,   (double _x)                                   );
  26 _PROTOTYPE( double fabs,  (double _x)                                   );
  27 _PROTOTYPE( double fabsf, (float _x)                                    );
  28 _PROTOTYPE( double floor, (double _x)                                   );
  29 _PROTOTYPE( double fmod,  (double _x, double _y)                        );
  30 _PROTOTYPE( double frexp, (double _x, int *_exp)                        );
  31 _PROTOTYPE( double ldexp, (double _x, int _exp)                         );
  32 _PROTOTYPE( double log,   (double _x)                                   );
  33 _PROTOTYPE( double log10, (double _x)                                   );
  34 _PROTOTYPE( double modf,  (double _x, double *_iptr)                    );
  35 _PROTOTYPE( double pow,   (double _x, double _y)                        );
  36 _PROTOTYPE( double rint,  (double _x)                                   );
  37 _PROTOTYPE( double scalbn, (double _x, int _exp)                        );
  38 _PROTOTYPE( float scalbnf, (float _x, int _exp)                         );
  39 _PROTOTYPE( double scalbln, (double _x, long _exp)                      );
  40 _PROTOTYPE( float scalblnf, (float _x, long _exp)                       );
  41 _PROTOTYPE( double sin,   (double _x)                                   );
  42 _PROTOTYPE( double sinh,  (double _x)                                   );
  43 _PROTOTYPE( double sqrt,  (double _x)                                   );
  44 _PROTOTYPE( double tan,   (double _x)                                   );
  45 _PROTOTYPE( double tanh,  (double _x)                                   );
  46 _PROTOTYPE( double hypot, (double _x, double _y)                        );
  47
  48 #ifdef _POSIX_SOURCE    /* STD-C? */
  49 #include <mathconst.h>
  50
  51 #define FP_INFINITE  1
  52 #define FP_NAN       2
  53 #define FP_NORMAL    3
  54 #define FP_SUBNORMAL 4
  55 #define FP_ZERO      5
  56
  57 _PROTOTYPE( int fpclassify,     (double x)                              );
  58 _PROTOTYPE( int isfinite,       (double x)                              );
  59 _PROTOTYPE( int isinf,          (double x)                              );
  60 _PROTOTYPE( int isnan,          (double x)                              );
  61 _PROTOTYPE( int isnormal,       (double x)                              );
  62 _PROTOTYPE( int signbit,        (double x)                              );
  63 _PROTOTYPE( int isgreater,      (double x, double y)    );
  64 _PROTOTYPE( int isgreaterequal, (double x, double y)    );
  65 _PROTOTYPE( int isless,         (double x, double y)    );
  66 _PROTOTYPE( int islessequal,    (double x, double y)    );
  67 _PROTOTYPE( int islessgreater,  (double x, double y)    );
  68 _PROTOTYPE( int isunordered,    (double x, double y)    );
  69 _PROTOTYPE( double nearbyint,   (double x)                              );
  70 _PROTOTYPE( double remainder,   (double x, double y)    );
  71 _PROTOTYPE( double trunc,       (double x)                              );
  72 #endif
  73
  74 #endif /* _MATH_H */