glibc/sysdeps/libm-ieee754/w_atan2l.c
Roland McGrath ee188d555b Tue Jun 4 21:01:20 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* sysdeps/mach/hurd/getlogin_r.c: New file.

Wed Jun  5 02:11:30 1996  Ulrich Drepper  <drepper@cygnus.com>

	* io/Makefile (routines): Add ttyname_r.

	* resolv/res_debug.c, resolv/resolv.h: Update from bind-4.3.4-T4A.

	* sysdeps/libm-i387/e_asinl.S, sysdeps/libm-i387/e_atan2l.S,
	sysdeps/libm-i387/e_expl.S, sysdeps/libm-i387/e_fmodl.S,
	sysdeps/libm-i387/e_log10l.S, sysdeps/libm-i387/e_logl.S,
	sysdeps/libm-i387/e_remainderl.S, sysdeps/libm-i387/e_scalbl.S,
	sysdeps/libm-i387/e_sqrtl.S, sysdeps/libm-i387/s_atanl.S,
	sysdeps/libm-i387/s_cosl.S, sysdeps/libm-i387/s_ilogbl.S,
	sysdeps/libm-i387/s_log1pl.S, sysdeps/libm-i387/s_logbl.S,
	sysdeps/libm-i387/s_scalbnl.S, sysdeps/libm-i387/s_sinl.S,
	sysdeps/libm-i387/s_tanl.S: New files.  i387 assembler versions
	of `long double' math functions.

	* sysdeps/libm-ieee754/k_standard.c: Add handling for errors
	in long double functions.

	* sysdeps/libm-ieee754/s_ilogbl.c, sysdeps/libm-ieee754/s_logbl.c,
	sysdeps/libm-ieee754/s_modfl.c:  New files.  Generic versions
	of `long double' math functions.

	* sysdeps/libm-ieee754/s_isinf.c [NO_LONG_DOUBLE]: Add string
        alias for __isinfl.

	* sysdeps/libm-ieee754/w_acoshl.c, sysdeps/libm-ieee754/w_acosl.c,
	sysdeps/libm-ieee754/w_asinl.c, sysdeps/libm-ieee754/w_atan2l.c,
	sysdeps/libm-ieee754/w_atanhl.c, sysdeps/libm-ieee754/w_cabsl.c,
	sysdeps/libm-ieee754/w_coshl.c, sysdeps/libm-ieee754/w_dreml.c,
	sysdeps/libm-ieee754/w_expl.c, sysdeps/libm-ieee754/w_fmodl.c,
	sysdeps/libm-ieee754/w_gammal.c, sysdeps/libm-ieee754/w_gammal_r.c,
	sysdeps/libm-ieee754/w_hypotl.c, sysdeps/libm-ieee754/w_j0l.c,
	sysdeps/libm-ieee754/w_j1l.c, sysdeps/libm-ieee754/w_jnl.c,
	sysdeps/libm-ieee754/w_lgammal.c, sysdeps/libm-ieee754/w_lgammal_r.c,
	sysdeps/libm-ieee754/w_log10l.c, sysdeps/libm-ieee754/w_logl.c,
	sysdeps/libm-ieee754/w_powl.c, sysdeps/libm-ieee754/w_remainderl.c,
	sysdeps/libm-ieee754/w_scalbl.c, sysdeps/libm-ieee754/w_sinhl.c,
	sysdeps/libm-ieee754/w_sqrtl.c: New files.  Wrapper functions
	around long double function implementations.

	* sysdeps/posix/ttyname_r.c (ttyname_r): Use _D_EXACT_NAMLEN
	to determine length of directory entry name.

	* posix/Makefile (routines): Add getlogin_r.
	* posix/unistd.h: Add prototype for getlogin_r.
	* sysdeps/stub/getlogin_r.c: New file.  Reentrant version of
	getlogin function, specified in P1003.1c/D6.  Stub version.
	* sysdeps/unix/getlogin.c (getlogin): Use ttyname_r instead of
	ttyname.  This avoids saving and restoring the old content.
	Also use setutent_r, getutline_r and endutent_r instead of
	accing UTMP file directly.
	* sysdeps/unix/getlogin_r.c: New file.  Reentrant version of
	getlogin function, specified in P1003.1c/D6.

Tue Jun  4 20:10:09 1996  J.T. Conklin  <jtc@cygnus.com>

	* sysdeps/libm-i387/s_finitef.S: Fix mask for exponent.

	* elf/dl-lookup.c (_dl_lookup_symbol): Grok magical undefined symbols
	_GNU_libc_dl_{open,close,symbol} and resolve them to dl functions.

	* elf/rtld.c (rtld_map): Renamed to _dl_rtld_map, made global.
	* elf/link.h: Declare _dl_rtld_map.

	* elf/dl-lookup.c (_dl_symbol_value): New function.
	* elf/link.h: Declare it.

	stdio-common/vfscanf.c: Prepare for reentrant libio.
	Used in reentrant libio.
1996-06-05 01:07:21 +00:00

49 lines
1.1 KiB
C

/* w_atan2l.c -- long double version of w_atan2.c.
* Conversion to long double by Ulrich Drepper,
* Cygnus Support, drepper@cygnus.com.
*/
/*
* ====================================================
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
*
* Developed at SunPro, a Sun Microsystems, Inc. business.
* Permission to use, copy, modify, and distribute this
* software is freely granted, provided that this notice
* is preserved.
* ====================================================
*/
#if defined(LIBM_SCCS) && !defined(lint)
static char rcsid[] = "$NetBSD: $";
#endif
/*
* wrapper atan2l(y,x)
*/
#include "math.h"
#include "math_private.h"
#ifdef __STDC__
long double __atan2l(long double y, long double x) /* wrapper atan2l */
#else
long double __atan2l(y,x) /* wrapper atan2l */
long double y,x;
#endif
{
#ifdef _IEEE_LIBM
return __ieee754_atan2l(y,x);
#else
long double z;
z = __ieee754_atan2l(y,x);
if(_LIB_VERSION == _IEEE_||__isnanl(x)||__isnanl(y)) return z;
if(x==0.0&&y==0.0) {
return __kernel_standard(y,x,203); /* atan2l(+-0,+-0) */
} else
return z;
#endif
}
weak_alias (__atan2l, atan2l)