mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-29 08:11:08 +00:00
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.
233 lines
6.9 KiB
C
233 lines
6.9 KiB
C
/* Prototype declarations for math functions; helper file for <math.h>.
|
|
Copyright (C) 1996 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 Free Software Foundation, Inc., 675 Mass Ave,
|
|
Cambridge, MA 02139, USA. */
|
|
|
|
/* NOTE: Because of the special way this file is used by <math.h>, this
|
|
file must NOT be protected from multiple inclusion as header files
|
|
usually are.
|
|
|
|
This file provides prototype declarations for the math functions.
|
|
Most functions are declared using the macro:
|
|
|
|
__MATHCALL (NAME,[_r], (ARGS...));
|
|
|
|
This means there is a function `NAME' returning `double' and a function
|
|
`NAMEf' returning `float'. Each place `_Mdouble_' appears in the
|
|
prototype, that is actually `double' in the prototype for `NAME' and
|
|
`float' in the prototype for `NAMEf'. Reentrant variant functions are
|
|
called `NAME_r' and `NAMEf_r'.
|
|
|
|
Functions returning other types like `int' are declared using the macro:
|
|
|
|
__MATHDECL (TYPE, NAME,[_r], (ARGS...));
|
|
|
|
This is just like __MATHCALL but for a function returning `TYPE'
|
|
instead of `_Mdouble_'. In all of these cases, there is still
|
|
both a `NAME' and a `NAMEf' that takes `float' arguments. */
|
|
|
|
#ifndef _MATH_H
|
|
#error "Never include mathcalls.h directly; include <math.h> instead."
|
|
#endif
|
|
|
|
|
|
/* Trigonometric functions. */
|
|
|
|
/* Arc cosine of X. */
|
|
__MATHCALL (acos,, (_Mdouble_ __x));
|
|
/* Arc sine of X. */
|
|
__MATHCALL (asin,, (_Mdouble_ __x));
|
|
/* Arc tangent of X. */
|
|
__MATHCALL (atan,, (_Mdouble_ __x));
|
|
/* Arc tangent of Y/X. */
|
|
__MATHCALL (atan2,, (_Mdouble_ __y, _Mdouble_ __x));
|
|
|
|
/* Cosine of X. */
|
|
__MATHCALL (cos,, (_Mdouble_ __x));
|
|
/* Sine of X. */
|
|
__MATHCALL (sin,, (_Mdouble_ __x));
|
|
/* Tangent of X. */
|
|
__MATHCALL (tan,, (_Mdouble_ __x));
|
|
|
|
|
|
/* Hyperbolic functions. */
|
|
|
|
/* Hyperbolic cosine of X. */
|
|
__MATHCALL (cosh,, (_Mdouble_ __x));
|
|
/* Hyperbolic sine of X. */
|
|
__MATHCALL (sinh,, (_Mdouble_ __x));
|
|
/* Hyperbolic tangent of X. */
|
|
__MATHCALL (tanh,, (_Mdouble_ __x));
|
|
|
|
#ifdef __USE_MISC
|
|
/* Hyperbolic arc cosine of X. */
|
|
__MATHCALL (acosh,, (_Mdouble_ __x));
|
|
/* Hyperbolic arc sine of X. */
|
|
__MATHCALL (asinh,, (_Mdouble_ __x));
|
|
/* Hyperbolic arc tangent of X. */
|
|
__MATHCALL (atanh,, (_Mdouble_ __x));
|
|
#endif
|
|
|
|
/* Exponential and logarithmic functions. */
|
|
|
|
/* Exponentional function of X. */
|
|
__MATHCALL (exp,, (_Mdouble_ __x));
|
|
|
|
/* Break VALUE into a normalized fraction and an integral power of 2. */
|
|
__MATHCALL (frexp,, (_Mdouble_ __value, int *__exp));
|
|
|
|
/* X times (two to the EXP power). */
|
|
__MATHCALL (ldexp,, (_Mdouble_ __x, int __exp));
|
|
|
|
/* Natural logarithm of X. */
|
|
__MATHCALL (log,, (_Mdouble_ __x));
|
|
|
|
/* Base-ten logarithm of X. */
|
|
__MATHCALL (log10,, (_Mdouble_ __x));
|
|
|
|
#ifdef __USE_MISC
|
|
/* Return exp(X) - 1. */
|
|
__MATHCALL (expm1,, (_Mdouble_ __x));
|
|
|
|
/* Return log(1 + X). */
|
|
__MATHCALL (log1p,, (_Mdouble_ __x));
|
|
#endif
|
|
|
|
/* Break VALUE into integral and fractional parts. */
|
|
__MATHCALL (modf,, (_Mdouble_ __value, _Mdouble_ *__iptr));
|
|
|
|
|
|
/* Power functions. */
|
|
|
|
/* Return X to the Y power. */
|
|
__MATHCALL (pow,, (_Mdouble_ __x, _Mdouble_ __y));
|
|
|
|
/* Return the square root of X. */
|
|
__MATHCALL (sqrt,, (_Mdouble_ __x));
|
|
|
|
#ifdef __USE_MISC
|
|
/* Return the cube root of X. */
|
|
__MATHCALL (cbrt,, (_Mdouble_ __x));
|
|
#endif
|
|
|
|
|
|
/* Nearest integer, absolute value, and remainder functions. */
|
|
|
|
/* Smallest integral value not less than X. */
|
|
__MATHCALL (ceil,, (_Mdouble_ __x));
|
|
|
|
/* Absolute value of X. */
|
|
__MATHCALL (fabs,, (_Mdouble_ __x));
|
|
|
|
/* Largest integer not greater than X. */
|
|
__MATHCALL (floor,, (_Mdouble_ __x));
|
|
|
|
/* Floating-point modulo remainder of X/Y. */
|
|
__MATHCALL (fmod,, (_Mdouble_ __x, _Mdouble_ __y));
|
|
|
|
|
|
#ifdef __USE_MISC
|
|
|
|
/* Return 0 if VALUE is finite or NaN, +1 if it
|
|
is +Infinity, -1 if it is -Infinity. */
|
|
__MATHDECL (int, isinf,, (_Mdouble_ __value));
|
|
|
|
/* Return nonzero if VALUE is not a number. */
|
|
__MATHDECL (int, isnan,, (_Mdouble_ __value));
|
|
|
|
/* Return nonzero if VALUE is finite and not NaN. */
|
|
__MATHDECL (int, finite,, (_Mdouble_ __value));
|
|
|
|
/* 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. */
|
|
__MATHCALL (infnan,, (int __error));
|
|
|
|
/* Return X with its signed changed to Y's. */
|
|
__MATHCALL (copysign,, (_Mdouble_ __x, _Mdouble_ __y));
|
|
|
|
/* Return X times (2 to the Nth power). */
|
|
__MATHCALL (scalb,, (_Mdouble_ __x, _Mdouble_ __n));
|
|
|
|
/* Return X times (2 to the Nth power). */
|
|
__MATHCALL (scalbn,, (_Mdouble_ __x, int __n));
|
|
|
|
/* Return the remainder of X/Y. */
|
|
__MATHCALL (drem,, (_Mdouble_ __x, _Mdouble_ __y));
|
|
|
|
/* Return the base 2 signed integral exponent of X. */
|
|
__MATHCALL (logb,, (_Mdouble_ __x));
|
|
|
|
/* Return the integer nearest X in the direction of the
|
|
prevailing rounding mode. */
|
|
__MATHCALL (rint,, (_Mdouble_ __x));
|
|
|
|
/* Return `sqrt(X*X + Y*Y)'. */
|
|
__MATHCALL (hypot,, (_Mdouble_ __x, _Mdouble_ __y));
|
|
|
|
struct __MATH_PRECNAME(__cabs_complex,)
|
|
{
|
|
_Mdouble_ x, y;
|
|
};
|
|
|
|
/* Return `sqrt(X*X + Y*Y)'. */
|
|
__MATHCALL (cabs,, (struct __MATH_PRECNAME(__cabs_complex,)));
|
|
|
|
|
|
/* Return X + epsilon if X < Y, X - epsilon if X > Y. */
|
|
__MATHCALL (nextafter,, (_Mdouble_ __x, _Mdouble_ __y));
|
|
|
|
/* Return the remainder of integer divison X / Y with infinite precision. */
|
|
__MATHCALL (remainder,, (_Mdouble_ __x, _Mdouble_ __y));
|
|
|
|
/* Return the binary exponent of X, which must be nonzero. */
|
|
__MATHDECL (int, ilogb,, (_Mdouble_ __x));
|
|
|
|
/* Return the fractional part of X after dividing out `ilogb (X)'. */
|
|
__MATHCALL (significand,, (_Mdouble_ __x));
|
|
|
|
|
|
|
|
/* Error, gamma, and Bessel functions. */
|
|
__MATHCALL (erf,, (_Mdouble_));
|
|
__MATHCALL (erfc,, (_Mdouble_));
|
|
__MATHCALL (gamma,, (_Mdouble_));
|
|
__MATHCALL (j0,, (_Mdouble_));
|
|
__MATHCALL (j1,, (_Mdouble_));
|
|
__MATHCALL (jn,, (int, _Mdouble_));
|
|
__MATHCALL (lgamma,, (_Mdouble_));
|
|
__MATHCALL (y0,, (_Mdouble_));
|
|
__MATHCALL (y1,, (_Mdouble_));
|
|
__MATHCALL (yn,, (int, _Mdouble_));
|
|
|
|
/* This variable is used by `gamma' and `lgamma'. */
|
|
extern int signgam;
|
|
|
|
#ifdef __USE_REENTRANT
|
|
|
|
/* Reentrant versions of gamma and lgamma. Those functions use the global
|
|
variable `signgam'. The reentrant versions instead take a pointer and
|
|
store the value through it. */
|
|
__MATHCALL (gamma,_r, (_Mdouble_, int *));
|
|
__MATHCALL (lgamma,_r, (_Mdouble_, int *));
|
|
#endif
|
|
|
|
#endif /* Use misc. */
|