a34d34bc1f
implementations for these functions, we lean on GNU builtin functions for using them, so these declarations are also conditional on using a GNU compiler.
103 lines
3.7 KiB
C
103 lines
3.7 KiB
C
/* The <math.h> header contains prototypes for mathematical functions. */
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#ifndef _MATH_H
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#define _MATH_H
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#ifndef _ANSI_H
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#include <ansi.h>
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#endif
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#define INFINITY (__infinity())
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#define NAN (__qnan())
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#define HUGE_VAL INFINITY
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/* Function Prototypes. */
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_PROTOTYPE( double __infinity, (void) );
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_PROTOTYPE( double __qnan, (void) );
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_PROTOTYPE( double acos, (double _x) );
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_PROTOTYPE( double asin, (double _x) );
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_PROTOTYPE( double atan, (double _x) );
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_PROTOTYPE( double atan2, (double _y, double _x) );
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_PROTOTYPE( double ceil, (double _x) );
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_PROTOTYPE( double cos, (double _x) );
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_PROTOTYPE( double cosh, (double _x) );
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_PROTOTYPE( double exp, (double _x) );
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_PROTOTYPE( double fabs, (double _x) );
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_PROTOTYPE( float fabsf, (float _x) );
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_PROTOTYPE( double floor, (double _x) );
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_PROTOTYPE( double fmod, (double _x, double _y) );
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_PROTOTYPE( double frexp, (double _x, int *_exp) );
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_PROTOTYPE( double ldexp, (double _x, int _exp) );
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_PROTOTYPE( double log, (double _x) );
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_PROTOTYPE( double log10, (double _x) );
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_PROTOTYPE( double modf, (double _x, double *_iptr) );
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_PROTOTYPE( double pow, (double _x, double _y) );
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_PROTOTYPE( double rint, (double _x) );
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_PROTOTYPE( double scalbn, (double _x, int _exp) );
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_PROTOTYPE( float scalbnf, (float _x, int _exp) );
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_PROTOTYPE( double scalbln, (double _x, long _exp) );
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_PROTOTYPE( float scalblnf, (float _x, long _exp) );
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_PROTOTYPE( double sin, (double _x) );
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_PROTOTYPE( double sinh, (double _x) );
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_PROTOTYPE( double sqrt, (double _x) );
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_PROTOTYPE( double tan, (double _x) );
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_PROTOTYPE( double tanh, (double _x) );
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_PROTOTYPE( double hypot, (double _x, double _y) );
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#ifdef _POSIX_SOURCE /* STD-C? */
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#include <mathconst.h>
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#define FP_INFINITE 1
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#define FP_NAN 2
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#define FP_NORMAL 3
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#define FP_SUBNORMAL 4
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#define FP_ZERO 5
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_PROTOTYPE( int fpclassify, (double x) );
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_PROTOTYPE( int isfinite, (double x) );
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_PROTOTYPE( int isinf, (double x) );
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_PROTOTYPE( int isnan, (double x) );
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_PROTOTYPE( int isnormal, (double x) );
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_PROTOTYPE( int signbit, (double x) );
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_PROTOTYPE( int isgreater, (double x, double y) );
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_PROTOTYPE( int isgreaterequal, (double x, double y) );
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_PROTOTYPE( int isless, (double x, double y) );
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_PROTOTYPE( int islessequal, (double x, double y) );
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_PROTOTYPE( int islessgreater, (double x, double y) );
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_PROTOTYPE( int isunordered, (double x, double y) );
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_PROTOTYPE( double nearbyint, (double x) );
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_PROTOTYPE( double remainder, (double x, double y) );
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_PROTOTYPE( double trunc, (double x) );
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#endif
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/* The following definitions are not implemented in the ACK math lib.
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* We allow them in the GNU compiler because they are builtins there.
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*/
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#ifdef __GNUC__
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_PROTOTYPE( float powf, (float, float) );
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_PROTOTYPE( float fmodf, (float, float) );
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_PROTOTYPE( double erf, (double) );
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_PROTOTYPE( double erfc, (double) );
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_PROTOTYPE( double gamma, (double) );
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_PROTOTYPE( double j0, (double) );
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_PROTOTYPE( double j1, (double) );
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_PROTOTYPE( double jn, (int, double) );
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_PROTOTYPE( double lgamma, (double) );
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_PROTOTYPE( double y0, (double) );
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_PROTOTYPE( double y1, (double) );
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_PROTOTYPE( double yn, (int, double) );
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_PROTOTYPE( double acosh, (double) );
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_PROTOTYPE( double asinh, (double) );
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_PROTOTYPE( double atanh, (double) );
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_PROTOTYPE( double cbrt, (double) );
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_PROTOTYPE( double expm1, (double) );
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_PROTOTYPE( int ilogb, (double) );
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_PROTOTYPE( double log1p, (double) );
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_PROTOTYPE( double logb, (double) );
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_PROTOTYPE( double nextafter, (double, double) );
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_PROTOTYPE( double scalb, (double, double) );
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#endif
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#endif /* _MATH_H */
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