f7eac6eb50
* Makeconfig ($(common-objpfx)config.make): Depend on config.h.in. Mon Mar 4 17:35:09 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu> * hurd/catch-signal.c (hurd_safe_memmove): New function. (hurd_safe_copyin, hurd_safe_copyout): New functions. * hurd/hurd/sigpreempt.h: Declare them. Sun Mar 3 08:43:44 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu> Replace math code with fdlibm from Sun as modified for netbsd by JT Conklin and Ian Taylor, including x86 FPU support. * sysdeps/libm-ieee754, sysdeps/libm-i387: New directories. * math/math_private.h: New file. * sysdeps/i386/fpu/Implies: New file. * sysdeps/ieee754/Implies: New file. * math/machine/asm.h, math/machine/endian.h: New files. * math/Makefile, math/math.h: Rewritten. * mathcalls.h, math/mathcalls.h: New file, broken out of math.h. * math/finite.c: File removed. * sysdeps/generic/Makefile [$(subdir)=math]: Frobnication removed. * math/test-math.c: Include errno.h and string.h. * sysdeps/unix/bsd/dirstream.h: File removed. * sysdeps/unix/bsd/readdir.c: File removed.
144 lines
4.1 KiB
C
144 lines
4.1 KiB
C
/* 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
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
|
not, write to the, 1992 Free Software Foundation, Inc., 675 Mass Ave,
|
|
Cambridge, MA 02139, USA. */
|
|
|
|
/*
|
|
* ANSI Standard: 4.5 MATHEMATICS <math.h>
|
|
*/
|
|
|
|
#ifndef _MATH_H
|
|
|
|
#define _MATH_H 1
|
|
#include <features.h>
|
|
|
|
__BEGIN_DECLS
|
|
|
|
#define __need_Emath
|
|
#include <errno.h>
|
|
|
|
/* 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). */
|
|
#ifdef __USE_GNU
|
|
#include <nan.h>
|
|
#endif
|
|
|
|
|
|
/* 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
|
|
|
|
|
|
#ifdef __USE_MISC
|
|
/* Support for various different standard error handling behaviors. */
|
|
|
|
typedef enum { _IEEE_ = -1, _SVID_, _XOPEN_, _POSIX_ } _LIB_VERSION_TYPE;
|
|
|
|
/* 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
|
|
|
|
|
|
#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;
|
|
};
|
|
|
|
extern int matherr __P ((struct exception *));
|
|
|
|
#define X_TLOSS 1.41484755040568800000e+16
|
|
|
|
/* 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
|
|
|
|
/* SVID mode specifies returning this large value instead of infinity. */
|
|
#define HUGE FLT_MAX
|
|
#include <float.h> /* Defines FLT_MAX. */
|
|
|
|
#endif
|
|
|
|
|
|
/* Get machine-dependent inline versions (if there are any). */
|
|
#include <__math.h>
|
|
|
|
|
|
__END_DECLS
|
|
|
|
|
|
#ifdef __USE_BSD
|
|
/* Some useful constants. */
|
|
#define M_E 2.7182818284590452354 /* e */
|
|
#define M_LOG2E 1.4426950408889634074 /* log 2e */
|
|
#define M_LOG10E 0.43429448190325182765 /* log 10e */
|
|
#define M_LN2 0.69314718055994530942 /* log e2 */
|
|
#define M_LN10 2.30258509299404568402 /* log e10 */
|
|
#define M_PI 3.14159265358979323846 /* pi */
|
|
#define M_PI_2 1.57079632679489661923 /* pi/2 */
|
|
#define M_PI_4 0.78539816339744830962 /* pi/4 */
|
|
#define M_1_PI 0.31830988618379067154 /* 1/pi */
|
|
#define M_2_PI 0.63661977236758134308 /* 2/pi */
|
|
#define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */
|
|
#define M_SQRT2 1.41421356237309504880 /* sqrt(2) */
|
|
#define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */
|
|
#endif
|
|
|
|
|
|
#endif /* math.h */
|