glibc/sysdeps/libm-ieee754/s_sincos.c
Ulrich Drepper 7799b7b335 Update.
1997-04-15 03:14  Ulrich Drepper  <drepper@cygnus.com>

	* wcsmbs/wcsstr.c: Add weak alias wcswcs for Unix98 compliance.

	* math/Makefile (libm-calls): Add s_sincos and s_cproj.
	* math/mathcalls.h: Add prototype for sincos.
	* sysdeps/i386/fpu/__math.h: Warn about restriction on arguments to
	inlined sin and cos function.
	Define functions new in ISO C 9X when __USE_ISOC9X is defined.
	Add optimized version of finite.
	Rewrite sincos function to handle too large arguments.
	* sysdeps/libm-i387/s_cos.S: Better code alignment.
	* sysdeps/libm-i387/s_cosl.S: Likewise.
	* sysdeps/libm-i387/s_sin.S: Likewise.
	* sysdeps/libm-i387/s_sinl.S: Likewise.
	* sysdeps/libm-i387/s_finite.S: Yet better code.
	* sysdeps/libm-i387/s_finitef.S: Likewise.
	* sysdeps/libm-i387/s_sincos.S: New file.
	* sysdeps/libm-i387/s_sincosf.S: New file.
	* sysdeps/libm-i387/s_sincosl.S: New file.
	* sysdeps/libm-ieee754/s_sincos.c: New file.
	* sysdeps/libm-ieee754/s_sincosf.c: New file.
	* sysdeps/libm-ieee754/s_sincosl.c: New file.

	* sysdeps/libm-ieee754/s_ccosh.c: Change to use sincos function.
	* sysdeps/libm-ieee754/s_ccoshf.c: Likewise.
	* sysdeps/libm-ieee754/s_ccoshl.c: Likewise.
	* sysdeps/libm-ieee754/s_cexp.c: Likewise.
	* sysdeps/libm-ieee754/s_cexpf.c: Likewise.
	* sysdeps/libm-ieee754/s_cexpl.c: Likewise.
	* sysdeps/libm-ieee754/s_csinh.c: Likewise.
	* sysdeps/libm-ieee754/s_csinhf.c: Likewise.
	* sysdeps/libm-ieee754/s_csinhl.c: Likewise.
	* sysdeps/libm-ieee754/s_ctan.c: Likewise.
	* sysdeps/libm-ieee754/s_ctanf.c: Likewise.
	* sysdeps/libm-ieee754/s_ctanl.c: Likewise.
	* sysdeps/libm-ieee754/s_ctanh.c: Likewise.
	* sysdeps/libm-ieee754/s_ctanhf.c: Likewise.
	* sysdeps/libm-ieee754/s_ctanhl.c: Likewise.

	* sysdeps/libm-ieee754/s_cosl.c: Correct check for range.
	* sysdeps/libm-ieee754/s_sinl.c: Likewise.

	* sysdeps/libm-ieee754/s_roundtol.c: Fix typos.
	* sysdeps/libm-ieee754/s_roundtoll.c: Likewise.

	* nis/Makefile (services): Mention nisplus before compat.
	* nis/nis_call.c (__do_niscall): Change type of variable server_len
	to prevent warning.
	* nis/nss_compat/compat-grp.c (getgrent_next_file_plusgroup): Add
	cast to prevent warning.
	* nis/nss_compat/compat-pwd.c (getpwent_next_file_plususer): Likewise.
	* nis/nss_compat/compat-spwd.c (getspent_next_file_plususer): Likewise.
	* nis/nss_nisplus/nisplus-hosts.c (_nss_nisplus_parse_hostent): Change
	type of variable `i' to prevent warning.
	* nis/nss_nisplus/nisplus-network.c (_nss_nisplus_parse_netent):
	Likewise.
	* nis/nss_nisplus/nisplus-proto.c (_nss_nisplus_parse_protoent):
	Likewise.
	* nis/nss_nisplus/nisplus-rpc.c (_nss_nisplus_parse_rpcent): Likewise.
	* nis/nss_nisplus/nisplus-service.c (_nss_nisplus_parse_servent):
	Likewise.

	* sysdeps/generic/Dist: Remove old math implementation files.
	* sysdeps/generic/mathimpl.h: Removed.
	* sysdeps/generic/trig.h: Removed.
	* sysdeps/generic/sincos.c: Removed.
	* sysdeps/generic/asincos.c: Removed.
	* sysdeps/generic/exp__E.c: Removed.
	* sysdeps/generic/log__L.c: Removed.

1997-04-13 17:18  Wolfram Gloger  <wmglo@dent.med.uni-muenchen.de>

	* malloc/malloc.c (fREe): Small optimization.  Before returning,
	add fast check whether the heap containing top can go away.

1997-04-11 16:46  Wolfram Gloger  <wmglo@dent.med.uni-muenchen.de>

	* malloc/malloc.c (mALLOc, rEALLOc, cALLOc, mEMALIGn): When
	failing to allocate a new chunk, also try the main_arena.  It may
	be that we are only running out of mmapped regions, and other
	arenas cannot be enlarged sufficiently.
	(new_heap, malloc_extend_top): Handle top_pad more consistently,
	i.e. only in new_heap().

1997-04-13 21:10  Philip Blundell  <pjb27@cl.cam.ac.uk>

	* sysdeps/posix/Makefile: Don't try to build and run mk-stdiolim
	if cross-compiling.

	* configure.in: Recognise "...linuxaout" OS names and turn off ELF.

	* configure.in: Add ARM support.
	* sysdeps/arm/Implies: New file.
	* sysdeps/arm/__longjmp.S: New file.
	* sysdeps/arm/bsd-_setjmp: New file.
	* sysdeps/arm/bsd-setjmp: New file.
	* sysdeps/arm/bytesex.h: New file.
	* sysdeps/arm/fpu_control.h: New file.
	* sysdeps/arm/jmp_buf.h: New file.
	* sysdeps/arm/setjmp.h: New file.
	* sysdeps/arm/sysdep.h: New file.
	* sysdeps/unix/arm/config.h: New file.

1997-04-14 04:03  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/libm-ieee754/s_cproj.c: New file.
	* sysdeps/libm-ieee754/s_cprojf.c: New file.
	* sysdeps/libm-ieee754/s_cprojl.c: New file.
1997-04-15 01:38:39 +00:00

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C

/* Compute sine and cosine of argument.
Copyright (C) 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <math.h>
#include "math_private.h"
void
__sincos (double x, double *sinx, double *cosx)
{
int32_t ix;
/* High word of x. */
GET_HIGH_WORD (ix, x);
/* |x| ~< pi/4 */
ix &= 0x7fffffff;
if (ix <= 0x3fe921fb)
{
*sinx = __kernel_sin (x, 0.0, 0);
*cosx = __kernel_cos (x, 0.0);
}
else if (ix>=0x7ff00000)
{
/* sin(Inf or NaN) is NaN */
*sinx = *cosx = x - x;
}
else
{
/* Argument reduction needed. */
double y[2];
int n;
n = __ieee754_rem_pio2 (x, y);
switch (n & 3)
{
case 0:
*sinx = __kernel_sin (y[0], y[1], 1);
*cosx = __kernel_cos (y[0], y[1]);
break;
case 1:
*sinx = __kernel_cos (y[0], y[1]);
*cosx = -__kernel_sin (y[0], y[1], 1);
break;
case 2:
*sinx = -__kernel_sin (y[0], y[1], 1);
*cosx = -__kernel_cos (y[0], y[1]);
break;
default:
*sinx = -__kernel_cos (y[0], y[1]);
*cosx = __kernel_sin (y[0], y[1], 1);
break;
}
}
}
weak_alias (__sincos, sincos)
#ifdef NO_LONG_DOUBLE
strong_alias (__sincos, __sincosl)
weak_alias (__sincos, sincosl)
#endif