diff options
Diffstat (limited to 'math/math.h')
| -rw-r--r-- | math/math.h | 298 |
1 files changed, 62 insertions, 236 deletions
diff --git a/math/math.h b/math/math.h index c30928de30..2693fcc9d0 100644 --- a/math/math.h +++ b/math/math.h @@ -1,4 +1,5 @@ -/* Copyright (C) 1991, 1992, 1993, 1995 Free Software Foundation, Inc. +/* Declarations for math functions. +Copyright (C) 1991, 92, 93, 95, 96 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -30,7 +31,8 @@ __BEGIN_DECLS #define __need_Emath #include <errno.h> -/* Get machine-dependent HUGE_VAL value (returned on overflow). */ +/* Get machine-dependent HUGE_VAL value (returned on overflow). + On all IEEE754 machines, this is +Infinity. */ #include <huge_val.h> /* Get machine-dependent NAN value (returned for some domain errors). */ @@ -39,260 +41,84 @@ __BEGIN_DECLS #endif -/* Trigonometric functions. */ - -/* Arc cosine of X. */ -extern double acos __P ((double __x)) __attribute__ ((__const__)); -/* Arc sine of X. */ -extern double asin __P ((double __x)) __attribute__ ((__const__)); -/* Arc tangent of X. */ -extern double atan __P ((double __x)) __attribute__ ((__const__)); -/* Arc tangent of Y/X. */ -extern double atan2 __P ((double __y, double __x)) __attribute__ ((__const__)); - -/* Cosine of X. */ -extern double cos __P ((double __x)) __attribute__ ((__const__)); -/* Sine of X. */ -extern double sin __P ((double __x)) __attribute__ ((__const__)); -/* Tangent of X. */ -extern double tan __P ((double __x)) __attribute__ ((__const__)); - - -/* Hyperbolic functions. */ - -/* Hyperbolic cosine of X. */ -extern double cosh __P ((double __x)) __attribute__ ((__const__)); -/* Hyperbolic sine of X. */ -extern double sinh __P ((double __x)) __attribute__ ((__const__)); -/* Hyperbolic tangent of X. */ -extern double tanh __P ((double __x)) __attribute__ ((__const__)); - -#ifdef __USE_MISC -/* Hyperbolic arc cosine of X. */ -extern double acosh __P ((double __x)) __attribute__ ((__const__)); -/* Hyperbolic arc sine of X. */ -extern double asinh __P ((double __x)) __attribute__ ((__const__)); -/* Hyperbolic arc tangent of X. */ -extern double atanh __P ((double __x)) __attribute__ ((__const__)); +/* The file <mathcalls.h> contains the prototypes for all the actual + math functions. These macros are used for those prototypes, so + we can easily declare each function as both `name' and `__name', + and can declare the float versions `namef' and `__namef'. */ + +#define __MATHCALL(function,suffix, args) \ + __MATHDECL (_Mdouble_, function,suffix, args) +#define __MATHDECL(type, function,suffix, args) \ + __MATHDECL_1(type, function,suffix, args); \ + __MATHDECL_1(type, __##function,suffix, args) +#define __MATHDECL_1(type, function,suffix, args) \ + extern type __MATH_PRECNAME(function,suffix) args + +#define _Mdouble_ double +#define __MATH_PRECNAME(name,r) name##r +#include <mathcalls.h> +#undef _Mdouble_ +#undef __MATH_PRECNAME + +#ifdef __USE_MISC +/* Include the file of declarations again, this type using `float' + instead of `double' and appending f to each function name. */ + +#define _Mdouble_ float +#define __MATH_PRECNAME(name,r) name##f##r +#include <mathcalls.h> +#undef _Mdouble_ +#undef __MATH_PRECNAME #endif -/* Exponential and logarithmic functions. */ - -/* Exponentional function of X. */ -extern double exp __P ((double __x)) __attribute__ ((__const__)); - -/* Break VALUE into a normalized fraction and an integral power of 2. */ -extern double frexp __P ((double __value, int *__exp)); - -/* X times (two to the EXP power). */ -extern double ldexp __P ((double __x, int __exp)) __attribute__ ((__const__)); - -/* Natural logarithm of X. */ -extern double log __P ((double __x)) __attribute__ ((__const__)); - -/* Base-ten logarithm of X. */ -extern double log10 __P ((double __x)) __attribute__ ((__const__)); #ifdef __USE_MISC -/* Return exp(X) - 1. */ -extern double __expm1 __P ((double __x)) __attribute__ ((__const__)); -extern double expm1 __P ((double __x)) __attribute__ ((__const__)); - -/* Return log(1 + X). */ -extern double log1p __P ((double __x)) __attribute__ ((__const__)); -#endif - -/* Break VALUE into integral and fractional parts. */ -extern double modf __P ((double __value, double *__iptr)); - +/* Support for various different standard error handling behaviors. */ -/* Power functions. */ +typedef enum { _IEEE_ = -1, _SVID_, _XOPEN_, _POSIX_ } _LIB_VERSION_TYPE; -/* Return X to the Y power. */ -extern double pow __P ((double __x, double __y)) __attribute__ ((__const__)); - -/* Return the square root of X. */ -extern double sqrt __P ((double __x)) __attribute__ ((__const__)); - -#ifdef __USE_MISC -/* Return the cube root of X. */ -extern double cbrt __P ((double __x)) __attribute__ ((__const__)); +/* This variable can be changed at run-time to any of the values above to + affect floating point error handling behavior (it may also be necessary + to change the hardware FPU exception settings). */ +extern _LIB_VERSION_TYPE _LIB_VERSION; #endif -/* Nearest integer, absolute value, and remainder functions. */ - -/* Smallest integral value not less than X. */ -extern double ceil __P ((double __x)) __attribute__ ((__const__)); - -/* Absolute value of X. */ -extern double fabs __P ((double __x)) __attribute__ ((__const__)); - -/* Largest integer not greater than X. */ -extern double floor __P ((double __x)) __attribute__ ((__const__)); - -/* Floating-point modulo remainder of X/Y. */ -extern double fmod __P ((double __x, double __y)) __attribute__ ((__const__)); - +#ifdef __USE_SVID +/* In SVID error handling, `matherr' is called with this description + of the exceptional condition. */ +struct exception + { + int type; + char *name; + double arg1; + double arg2; + double retval; + }; -/* Return 0 if VALUE is finite or NaN, +1 if it - is +Infinity, -1 if it is -Infinity. */ -extern int __isinf __P ((double __value)) __attribute__ ((__const__)); +extern int matherr __P ((struct exception *)); -/* Return nonzero if VALUE is not a number. */ -extern int __isnan __P ((double __value)) __attribute__ ((__const__)); +#define X_TLOSS 1.41484755040568800000e+16 -/* Return nonzero if VALUE is finite and not NaN. */ -extern int __finite __P ((double __value)) __attribute__ ((__const__)); -#ifdef __OPTIMIZE__ -#define __finite(value) (!__isinf(value)) -#endif - -/* Deal with an infinite or NaN result. - If ERROR is ERANGE, result is +Inf; - if ERROR is - ERANGE, result is -Inf; - otherwise result is NaN. - This will set `errno' to either ERANGE or EDOM, - and may return an infinity or NaN, or may do something else. */ -extern double __infnan __P ((int __error)); +/* Types of exceptions in the `type' field. */ +#define DOMAIN 1 +#define SING 2 +#define OVERFLOW 3 +#define UNDERFLOW 4 +#define TLOSS 5 +#define PLOSS 6 -/* Return X with its signed changed to Y's. */ -extern double __copysign __P ((double __x, double __y)) - __attribute__ ((__const__)); +/* SVID mode specifies returning this large value instead of infinity. */ +#define HUGE FLT_MAX +#include <float.h> /* Defines FLT_MAX. */ -/* Return X times (2 to the Nth power). */ -extern double __scalb __P ((double __x, int __n)) - __attribute__ ((__const__)); - -#ifdef __OPTIMIZE__ -#define __scalb(x, n) ldexp ((x), (n)) #endif -/* Return the remainder of X/Y. */ -extern double __drem __P ((double __x, double __y)) - __attribute__ ((__const__)); - -/* Return the base 2 signed integral exponent of X. */ -extern double __logb __P ((double __x)) __attribute__ ((__const__)); - -#ifdef __USE_MISC - -/* Return the integer nearest X in the direction of the - prevailing rounding mode. */ -extern double __rint __P ((double __x)) __attribute__ ((__const__)); -extern double rint __P ((double __x)) __attribute__ ((__const__)); - -/* Return `sqrt(X*X + Y*Y)'. */ -extern double hypot __P ((double __x, double __y)) __attribute__ ((__const__)); - -struct __cabs_complex -{ - double __x, __y; -}; - -/* Return `sqrt(X*X + Y*Y)'. */ -extern double cabs __P ((struct __cabs_complex)) __attribute__ ((__const__)); - -extern int isinf __P ((double __value)) __attribute__ ((__const__)); -extern int isnan __P ((double __value)) __attribute__ ((__const__)); -extern int finite __P ((double __value)) __attribute__ ((__const__)); -extern double infnan __P ((int __error)) __attribute__ ((__const__)); -extern double copysign __P ((double __x, double __y)) - __attribute__ ((__const__)); -extern double scalb __P ((double __x, int __n)) __attribute__ ((__const__)); -extern double drem __P ((double __x, double __y)) __attribute__ ((__const__)); -extern double logb __P ((double __x)) __attribute__ ((__const__)); - -#ifdef __OPTIMIZE__ -#define isinf(value) __isinf(value) -#define isnan(value) __isnan(value) -#define infnan(error) __infnan(error) -#define finite(value) __finite(value) -#define copysign(x, y) __copysign((x), (y)) -#define scalb(x, n) __scalb((x), (n)) -#define drem(x, y) __drem((x), (y)) -#define logb(x) __logb(x) -#endif /* Optimizing. */ - -#endif /* Use misc. */ - - -#if 0 -/* The "Future Library Directions" section of the - ANSI Standard reserves these as `float' and - `long double' versions of the above functions. */ - -extern float acosf __P ((float __x)) __attribute__ ((__const__)); -extern float asinf __P ((float __x)) __attribute__ ((__const__)); -extern float atanf __P ((float __x)) __attribute__ ((__const__)); -extern float atan2f __P ((float __y, float __x)) __attribute__ ((__const__)); -extern float cosf __P ((float __x)) __attribute__ ((__const__)); -extern float sinf __P ((float __x)) __attribute__ ((__const__)); -extern float tanf __P ((float __x)) __attribute__ ((__const__)); -extern float coshf __P ((float __x)) __attribute__ ((__const__)); -extern float sinhf __P ((float __x)) __attribute__ ((__const__)); -extern float tanhf __P ((float __x)) __attribute__ ((__const__)); -extern float expf __P ((float __x)) __attribute__ ((__const__)); -extern float frexpf __P ((float __value, int *__exp)); -extern float ldexpf __P ((float __x, int __exp)) __attribute__ ((__const__)); -extern float logf __P ((float __x)) __attribute__ ((__const__)); -extern float log10f __P ((float __x)) __attribute__ ((__const__)); -extern float modff __P ((float __value, float *__iptr)); -extern float powf __P ((float __x, float __y)) __attribute__ ((__const__)); -extern float sqrtf __P ((float __x)) __attribute__ ((__const__)); -extern float ceilf __P ((float __x)) __attribute__ ((__const__)); -extern float fabsf __P ((float __x)) __attribute__ ((__const__)); -extern float floorf __P ((float __x)) __attribute__ ((__const__)); -extern float fmodf __P ((float __x, float __y)) __attribute__ ((__const__)); - -extern __long_double_t acosl __P ((__long_double_t __x)) - __attribute__ ((__const__)); -extern __long_double_t asinl __P ((__long_double_t __x)) - __attribute__ ((__const__)); -extern __long_double_t atanl __P ((__long_double_t __x)) - __attribute__ ((__const__)); -extern __long_double_t atan2l __P ((__long_double_t __y, __long_double_t __x)) - __attribute__ ((__const__)); -extern __long_double_t cosl __P ((__long_double_t __x)) - __attribute__ ((__const__)); -extern __long_double_t sinl __P ((__long_double_t __x)) - __attribute__ ((__const__)); -extern __long_double_t tanl __P ((__long_double_t __x)) - __attribute__ ((__const__)); -extern __long_double_t coshl __P ((__long_double_t __x)) - __attribute__ ((__const__)); -extern __long_double_t sinhl __P ((__long_double_t __x)) - __attribute__ ((__const__)); -extern __long_double_t tanhl __P ((__long_double_t __x)) - __attribute__ ((__const__)); -extern __long_double_t expl __P ((__long_double_t __x)) - __attribute__ ((__const__)); -extern __long_double_t frexpl __P ((__long_double_t __value, int *__exp)); -extern __long_double_t ldexpl __P ((__long_double_t __x, int __exp)) - __attribute__ ((__const__)); -extern __long_double_t logl __P ((__long_double_t __x)) - __attribute__ ((__const__)); -extern __long_double_t log10l __P ((__long_double_t __x)) - __attribute__ ((__const__)); -extern __long_double_t modfl __P ((__long_double_t __value, - __long_double_t *__ip)); -extern __long_double_t powl __P ((__long_double_t __x, __long_double_t __y)) - __attribute__ ((__const__)); -extern __long_double_t sqrtl __P ((__long_double_t __x)) - __attribute__ ((__const__)); -extern __long_double_t ceill __P ((__long_double_t __x)) - __attribute__ ((__const__)); -extern __long_double_t fabsl __P ((__long_double_t __x)) - __attribute__ ((__const__)); -extern __long_double_t floorl __P ((__long_double_t __x)) - __attribute__ ((__const__)); -extern __long_double_t fmodl __P ((__long_double_t __x, __long_double_t __y)) - __attribute__ ((__const__)); -#endif /* 0 */ /* Get machine-dependent inline versions (if there are any). */ #include <__math.h> + __END_DECLS |