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1998-02-17 15:10 Ulrich Drepper <drepper@cygnus.com> * elf/dl-load.c (open_path): Use __xstat instead of stat. * localedata/tst-locale.sh: Comment out first test for now. 1998-02-14 14:58 H.J. Lu <hjl@gnu.org> * sysdeps/generic/_G_config.h (_G_HAVE_IO_GETLINE_INFO): Defined as 1. * sysdeps/unix/sysv/linux/_G_config.h (_G_HAVE_IO_GETLINE_INFO): Likewise. * libio/iogetline.c (_IO_getline_info): Renamed from _IO_getline. (_IO_getline): Just call _IO_getline_info. * libio/libioP.h (_IO_getline_info): New declaration. * libc.map (_IO_getline_info, __write): Added. 1998-02-17 Andreas Jaeger <aj@arthur.rhein-neckar.de> * sunrpc/rpc_cout.c (inline_struct): Change typo of plus to const char* to shut up gcc. 1998-02-17 11:37 Ulrich Drepper <drepper@cygnus.com> * eld/dl-open.c (_dl_open): Assign correct value to new->l_global. Patch forwarded by Cristian Gafton <gafton@redhat.com>. * math/math.h: Define M_* constants always as `double' and add new macros M_*l which are of type `long double'. * sysdeps/libm-ieee754/s_cacoshl.c: Use M_*l constants now. * sysdeps/libm-ieee754/s_cacosl.c: Likewise. * sysdeps/libm-ieee754/s_casinhl.c: Likewise. * sysdeps/libm-ieee754/s_catanhl.c: Likewise. * sysdeps/libm-ieee754/s_catanl.c: Likewise. * sysdeps/libm-ieee754/s_clog10l.c: Likewise. * sysdeps/libm-ieee754/s_clogl.c: Likewise. * math/libm-tst.c: Likewise. * sysdeps/i386/fpu/bits/mathinline.h (__M_SQRT2): Don't use _Mdbl, define as long double unconditionally. 1998-02-17 Andreas Jaeger <aj@arthur.rhein-neckar.de> * manual/arith.texi (Old-style number conversion): Correct some typos. 1998-02-16 16:28 H.J. Lu <hjl@gnu.org> * time/Makefile (tz-cflags, CFLAGS-tzfile.c, CFLAGS-tzset.c): Restore. * timezone/Makefile (CFLAGS-tzfile.c, CFLAGS-tzset.c): Deleted.
369 lines
12 KiB
C
369 lines
12 KiB
C
/* Declarations for math functions.
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Copyright (C) 1991, 92, 93, 95, 96, 97, 98 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/*
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* ISO C Standard: 4.5 MATHEMATICS <math.h>
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*/
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#ifndef _MATH_H
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#define _MATH_H 1
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#include <features.h>
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__BEGIN_DECLS
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/* Get machine-dependent HUGE_VAL value (returned on overflow).
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On all IEEE754 machines, this is +Infinity. */
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#include <bits/huge_val.h>
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/* Get machine-dependent NAN value (returned for some domain errors). */
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#ifdef __USE_GNU
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# include <bits/nan.h>
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#endif
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/* The file <bits/mathcalls.h> contains the prototypes for all the
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actual math functions. These macros are used for those prototypes,
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so we can easily declare each function as both `name' and `__name',
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and can declare the float versions `namef' and `__namef'. */
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#define __MATHCALL(function,suffix, args) \
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__MATHDECL (_Mdouble_,function,suffix, args)
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#define __MATHDECL(type, function,suffix, args) \
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__MATHDECL_1(type, function,suffix, args); \
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__MATHDECL_1(type, __CONCAT(__,function),suffix, args)
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#define __MATHCALLX(function,suffix, args, attrib) \
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__MATHDECLX (_Mdouble_,function,suffix, args, attrib)
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#define __MATHDECLX(type, function,suffix, args, attrib) \
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__MATHDECL_1(type, function,suffix, args) __attribute__ (attrib); \
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__MATHDECL_1(type, __CONCAT(__,function),suffix, args) __attribute__ (attrib)
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#define __MATHDECL_1(type, function,suffix, args) \
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extern type __MATH_PRECNAME(function,suffix) args
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#define _Mdouble_ double
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#define __MATH_PRECNAME(name,r) __CONCAT(name,r)
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#include <bits/mathcalls.h>
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#undef _Mdouble_
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#undef __MATH_PRECNAME
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#if defined __USE_MISC || defined __USE_ISOC9X
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/* Include the file of declarations again, this time using `float'
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instead of `double' and appending f to each function name. */
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# ifndef _Mfloat_
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# define _Mfloat_ float
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# endif
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# define _Mdouble_ _Mfloat_
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# ifdef __STDC__
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# define __MATH_PRECNAME(name,r) name##f##r
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# else
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# define __MATH_PRECNAME(name,r) name/**/f/**/r
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# endif
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# include <bits/mathcalls.h>
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# undef _Mdouble_
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# undef __MATH_PRECNAME
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# if __STDC__ - 0 || __GNUC__ - 0
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/* Include the file of declarations again, this time using `long double'
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instead of `double' and appending l to each function name. */
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# ifndef _Mlong_double_
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# define _Mlong_double_ long double
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# endif
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# define _Mdouble_ _Mlong_double_
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# ifdef __STDC__
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# define __MATH_PRECNAME(name,r) name##l##r
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# else
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# define __MATH_PRECNAME(name,r) name/**/l/**/r
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# endif
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# include <bits/mathcalls.h>
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# undef _Mdouble_
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# undef __MATH_PRECNAME
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# endif /* __STDC__ || __GNUC__ */
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#endif /* Use misc or ISO C 9X. */
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#undef __MATHDECL_1
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#undef __MATHDECL
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#undef __MATHCALL
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#if defined __USE_MISC || defined __USE_XOPEN || defined __USE_ISOC9X
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/* This variable is used by `gamma' and `lgamma'. */
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extern int signgam;
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#endif
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/* ISO C 9X defines some generic macros which work on any data type. */
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#if __USE_ISOC9X
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/* Get the architecture specific values describing the floating-point
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evaluation. The following symbols will get defined:
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float_t floating-point type at least as wide as `float' used
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to evaluate `float' expressions
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double_t floating-point type at least as wide as `double' used
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to evaluate `double' expressions
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FLT_EVAL_METHOD
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Defined to
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0 if `float_t' is `float' and `double_t' is `double'
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1 if `float_t' and `double_t' are `double'
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2 if `float_t' and `double_t' are `long double'
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else `float_t' and `double_t' are unspecified
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INFINITY representation of the infinity value of type `float'
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FP_FAST_FMA
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FP_FAST_FMAF
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FP_FAST_FMAL
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If defined it indicates that the the `fma' function
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generally executes about as fast as a multiply and an add.
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This macro is defined only iff the `fma' function is
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implemented directly with a hardware multiply-add instructions.
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FP_ILOGB0 Expands to a value returned by `ilogb (0.0)'.
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FP_ILOGBNAN Expands to a value returned by `ilogb (NAN)'.
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DECIMAL_DIG Number of decimal digits supported by conversion between
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decimal and all internal floating-point formats.
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*/
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# include <bits/mathdef.h>
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/* All floating-point numbers can be put in one of these categories. */
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enum
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{
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FP_NAN,
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# define FP_NAN FP_NAN
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FP_INFINITE,
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# define FP_INFINITE FP_INFINITE
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FP_ZERO,
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# define FP_ZERO FP_ZERO
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FP_SUBNORMAL,
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# define FP_SUBNORMAL FP_SUBNORMAL
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FP_NORMAL
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# define FP_NORMAL FP_NORMAL
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};
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/* Return number of classification appropriate for X. */
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# define fpclassify(x) \
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(sizeof (x) == sizeof (float) ? \
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__fpclassifyf (x) \
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: sizeof (x) == sizeof (double) ? \
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__fpclassify (x) : __fpclassifyl (x))
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/* Return nonzero value if sign of X is negative. */
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# define signbit(x) \
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(sizeof (x) == sizeof (float) ? \
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__signbitf (x) \
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: sizeof (x) == sizeof (double) ? \
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__signbit (x) : __signbitl (x))
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/* Return nonzero value if X is not +-Inf or NaN. */
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# define isfinite(x) \
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(sizeof (x) == sizeof (float) ? \
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__finitef (x) \
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: sizeof (x) == sizeof (double) ? \
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__finite (x) : __finitel (x))
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/* Return nonzero value if X is neither zero, subnormal, Inf, nor NaN. */
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# define isnormal(x) (fpclassify (x) == FP_NORMAL)
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/* Return nonzero value if X is a NaN. We could use `fpclassify' but
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we already have this functions `__isnan' and it is faster. */
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# define isnan(x) \
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(sizeof (x) == sizeof (float) ? \
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__isnanf (x) \
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: sizeof (x) == sizeof (double) ? \
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__isnan (x) : __isnanl (x))
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#endif /* Use ISO C 9X. */
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#ifdef __USE_MISC
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/* Support for various different standard error handling behaviors. */
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typedef enum { _IEEE_ = -1, _SVID_, _XOPEN_, _POSIX_ } _LIB_VERSION_TYPE;
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/* This variable can be changed at run-time to any of the values above to
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affect floating point error handling behavior (it may also be necessary
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to change the hardware FPU exception settings). */
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extern _LIB_VERSION_TYPE _LIB_VERSION;
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#endif
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#ifdef __USE_SVID
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/* In SVID error handling, `matherr' is called with this description
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of the exceptional condition.
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We have a problem when using C++ since `exception' is a reserved
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name in C++. */
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# ifdef __cplusplus
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struct __exception
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# else
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struct exception
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# endif
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{
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int type;
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char *name;
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double arg1;
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double arg2;
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double retval;
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};
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# ifdef __cplusplus
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extern int __matherr __P ((struct __exception *__exc));
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extern int matherr __P ((struct __exception *__exc));
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# else
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extern int __matherr __P ((struct exception *__exc));
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extern int matherr __P ((struct exception *__exc));
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# endif
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# define X_TLOSS 1.41484755040568800000e+16
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/* Types of exceptions in the `type' field. */
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# define DOMAIN 1
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# define SING 2
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# define OVERFLOW 3
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# define UNDERFLOW 4
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# define TLOSS 5
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# define PLOSS 6
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/* SVID mode specifies returning this large value instead of infinity. */
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# define HUGE FLT_MAX
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# include <float.h> /* Defines FLT_MAX. */
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#else /* !SVID */
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# ifdef __USE_XOPEN
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/* X/Open wants another strange constant. */
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# define MAXFLOAT FLT_MAX
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# include <float.h>
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# endif
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#endif /* SVID */
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/* Some useful constants. */
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#if defined __USE_BSD || defined __USE_UNIX98
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# define M_E 2.7182818284590452354 /* e */
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# define M_LOG2E 1.4426950408889634074 /* log_2 e */
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# define M_LOG10E 0.43429448190325182765 /* log_10 e */
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# define M_LN2 0.69314718055994530942 /* log_e 2 */
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# define M_LN10 2.30258509299404568402 /* log_e 10 */
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# define M_PI 3.14159265358979323846 /* pi */
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# define M_PI_2 1.57079632679489661923 /* pi/2 */
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# define M_PI_4 0.78539816339744830962 /* pi/4 */
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# define M_1_PI 0.31830988618379067154 /* 1/pi */
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# define M_2_PI 0.63661977236758134308 /* 2/pi */
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# define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */
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# define M_SQRT2 1.41421356237309504880 /* sqrt(2) */
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# define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */
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#endif
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/* The above constants are not adequate for computation using `long double's.
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Therefore we provide as an extension constants with similar names as a
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GNU extension. */
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#ifdef __USE_GNU
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# define M_El 2.7182818284590452354L /* e */
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# define M_LOG2El 1.4426950408889634074L /* log_2 e */
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# define M_LOG10El 0.43429448190325182765L /* log_10 e */
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# define M_LN2l 0.69314718055994530942L /* log_e 2 */
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# define M_LN10l 2.30258509299404568402L /* log_e 10 */
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# define M_PIl 3.14159265358979323846L /* pi */
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# define M_PI_2l 1.57079632679489661923L /* pi/2 */
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# define M_PI_4l 0.78539816339744830962L /* pi/4 */
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# define M_1_PIl 0.31830988618379067154L /* 1/pi */
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# define M_2_PIl 0.63661977236758134308L /* 2/pi */
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# define M_2_SQRTPIl 1.12837916709551257390L /* 2/sqrt(pi) */
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# define M_SQRT2l 1.41421356237309504880L /* sqrt(2) */
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# define M_SQRT1_2l 0.70710678118654752440L /* 1/sqrt(2) */
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#endif
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/* Get machine-dependent inline versions (if there are any). */
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#ifdef __OPTIMIZE__
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# include <bits/mathinline.h>
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#endif
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#if __USE_ISOC9X
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/* ISO C 9X defines some macros to compare number while taking care
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for unordered numbers. Since many FPUs provide special
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instructions to support these operations and these tests are
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defined in <bits/mathinline.h>, we define the generic macros at
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this late point and only if they are not defined yet. */
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/* Return nonzero value if X is greater than Y. */
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# ifndef isgreater
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# define isgreater(x, y) \
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(__extension__ \
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({ __typeof__(x) __x = (x); __typeof__(y) __y = (y); \
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!isunordered (__x, __y) && __x > __y; }))
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# endif
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/* Return nonzero value if X is greater than or equal to Y. */
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# ifndef isgreaterequal
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# define isgreaterequal(x, y) \
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(__extension__ \
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({ __typeof__(x) __x = (x); __typeof__(y) __y = (y); \
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!isunordered (__x, __y) && __x >= __y; }))
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# endif
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/* Return nonzero value if X is less than Y. */
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# ifndef isless
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# define isless(x, y) \
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(__extension__ \
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({ __typeof__(x) __x = (x); __typeof__(y) __y = (y); \
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!isunordered (__x, __y) && __x < __y; }))
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# endif
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/* Return nonzero value if X is less than or equal to Y. */
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# ifndef islessequal
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# define islessequal(x, y) \
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(__extension__ \
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({ __typeof__(x) __x = (x); __typeof__(y) __y = (y); \
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!isunordered (__x, __y) && __x <= __y; }))
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# endif
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/* Return nonzero value if either X is less than Y or Y is less than X. */
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# ifndef islessgreater
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# define islessgreater(x, y) \
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(__extension__ \
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({ __typeof__(x) __x = (x); __typeof__(y) __y = (y); \
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!isunordered (__x, __y) && (__x < __y || __y < __x); }))
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# endif
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/* Return nonzero value if arguments are unordered. */
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# ifndef isunordered
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# define isunordered(x, y) \
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(__extension__ \
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({ __typeof__(x) __x = (x); __typeof__(y) __y = (y); \
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fpclassify (__x) == FP_NAN || fpclassify (__y) == FP_NAN; }))
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# endif
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#endif
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__END_DECLS
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#endif /* math.h */
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