mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-09 04:11:27 +08:00
bc9f6000f6
1997-03-23 02:11 Ulrich Drepper <drepper@cygnus.com>
* time/sys/time.h: Make values ITIMER_* also available as macros.
* elf/dl-support.c (_dl_sysdep_read_whole_file): Don't call
__fstat but instead __fxstat directly to avoid dependency on
libc.a when inline failed.
* sysdeps/generic/dl-sysdep.c (_dl_sysdep_read_whole_file): Likewise.
* math/Makefile (libm-routines): Add s_remquo.
* sysdeps/libm-i387/s_remquo.S: New file.
* sysdeps/libm-i387/s_remquof.S: New file.
* sysdeps/libm-i387/s_remquol.S: New file.
* sysdeps/libm-ieee754/s_remquo.c: New file.
* sysdeps/libm-ieee754/s_remquof.c: New file.
* sysdeps/libm-ieee754/s_remquol.c: New file.
* math/libm-test.c (remquo_test): New function.
* sysdeps/libm-ieee754/s_rintl.c: Handle implicit leading one
correctly.
1997-03-22 14:06 Ulrich Drepper <drepper@cygnus.com>
* math/Makefile (libm-calls): Add s_nan.
* sysdeps/libm-ieee754/s_nan.c: New file. Implement `nan' function.
* sysdeps/libm-ieee754/s_nanf.c: New file. Implement `nanf' function.
* sysdeps/libm-ieee754/s_nanl.c: New file. Implement `nanl' function.
* math/libm-test.c (basic_tests): Add tests for `nan' function.
* math/libm-test.c (copysign_test): New function.
(main): Call copysign_test.
1997-03-22 06:28 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/libm-ieee754/s_nextafter.c: Return y if x == y.
* sysdeps/libm-ieee754/s_nextafterf.c: Likewise.
* sysdeps/libm-ieee754/s_nextafterl.c: Likewise.
* sysdeps/libm-i387/s_nextafterl.c: Likewise.
* math/libm-test.c (fdim_test, fmin_test, fmax_test, nextafter_test):
New functions. Test these functions.
(main): Call above new functions.
1997-03-22 04:53 Ulrich Drepper <drepper@cygnus.com>
* Net release 2.0.2.
1997-03-22 04:37 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/unix/sysv/linux/termbits.h (OXTABS): Define as alias for
XTABS.
* sysdeps/unix/sysv/linux/alpha/termbits.h (OXTABS): Likewise.
* termios/sys/ttydefaults.h: Partly revert patch by Andreas Schwab
of Sun Dec 15 16:33:44 1996.
Proposed by Thomas Bushnell <thomas@gnu.ai.mit.edu>.
1997-03-21 13:41 Roland McGrath <roland@baalperazim.frob.com>
* sysdeps/sparc/dl-machine.h (elf_machine_rel): Rewritten as for i386.
Check here for non-SHN_UNDEF STB_LOCAL symbols don't do any lookup or
consult their values.
(elf_machine_lookup_noexec_p, elf_machine_lookup_noplt_p,
ELF_MACHINE_RELOC_NOPLT): New macros.
* elf/rtld.c (dl_main): Pass ELF_MACHINE_RELOC_NOPLT to
_dl_lookup_symbol in place of DL_LOOKUP_NOPLT.
* sysdeps/i386/dl-machine.h (ELF_MACHINE_RELOC_NOPLT): New macro.
* sysdeps/i386/dl-machine.h (elf_machine_rel): Rewritten to do the
symbol lookup before checking reloc type except for R_386_RELATIVE.
(elf_machine_lookup_noexec_p, elf_machine_lookup_noplt_p): New macros.
* elf/dl-reloc.c (RESOLVE): Remove STB_LOCAL check; let it be
per-machine since it supposedly can't happen on i386.
* elf/dl-lookup.c (do_lookup): Change arg FLAGS to RELOC_TYPE. Use
elf_machine_lookup_{noexec,noplt}_p macros on it. Remove gratuitous
indirection from REF arg; change callers.
(_dl_lookup_symbol, _dl_lookup_versioned_symbol): Change arg name.
(_dl_lookup_symbol_skip, _dl_lookup_versioned_symbol_skip): Remove
FLAGS arg altogether.
* elf/dlsym.c: Remove argument of FLAGS parameter.
* elf/dlvsym.c: Likewise.
* elf/link.h: Update decls.
* Makefile (distribute): Add BUGS.
85 lines
2.1 KiB
C
85 lines
2.1 KiB
C
/* @(#)s_nextafter.c 5.1 93/09/24 */
|
|
/*
|
|
* ====================================================
|
|
* 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: s_nextafter.c,v 1.8 1995/05/10 20:47:58 jtc Exp $";
|
|
#endif
|
|
|
|
/* IEEE functions
|
|
* nextafter(x,y)
|
|
* return the next machine floating-point number of x in the
|
|
* direction toward y.
|
|
* Special cases:
|
|
*/
|
|
|
|
#include "math.h"
|
|
#include "math_private.h"
|
|
|
|
#ifdef __STDC__
|
|
double __nextafter(double x, double y)
|
|
#else
|
|
double __nextafter(x,y)
|
|
double x,y;
|
|
#endif
|
|
{
|
|
int32_t hx,hy,ix,iy;
|
|
u_int32_t lx,ly;
|
|
|
|
EXTRACT_WORDS(hx,lx,x);
|
|
EXTRACT_WORDS(hy,ly,y);
|
|
ix = hx&0x7fffffff; /* |x| */
|
|
iy = hy&0x7fffffff; /* |y| */
|
|
|
|
if(((ix>=0x7ff00000)&&((ix-0x7ff00000)|lx)!=0) || /* x is nan */
|
|
((iy>=0x7ff00000)&&((iy-0x7ff00000)|ly)!=0)) /* y is nan */
|
|
return x+y;
|
|
if(x==y) return y; /* x=y, return y */
|
|
if((ix|lx)==0) { /* x == 0 */
|
|
INSERT_WORDS(x,hy&0x80000000,1); /* return +-minsubnormal */
|
|
y = x*x;
|
|
if(y==x) return y; else return x; /* raise underflow flag */
|
|
}
|
|
if(hx>=0) { /* x > 0 */
|
|
if(hx>hy||((hx==hy)&&(lx>ly))) { /* x > y, x -= ulp */
|
|
if(lx==0) hx -= 1;
|
|
lx -= 1;
|
|
} else { /* x < y, x += ulp */
|
|
lx += 1;
|
|
if(lx==0) hx += 1;
|
|
}
|
|
} else { /* x < 0 */
|
|
if(hy>=0||hx>hy||((hx==hy)&&(lx>ly))){/* x < y, x -= ulp */
|
|
if(lx==0) hx -= 1;
|
|
lx -= 1;
|
|
} else { /* x > y, x += ulp */
|
|
lx += 1;
|
|
if(lx==0) hx += 1;
|
|
}
|
|
}
|
|
hy = hx&0x7ff00000;
|
|
if(hy>=0x7ff00000) return x+x; /* overflow */
|
|
if(hy<0x00100000) { /* underflow */
|
|
y = x*x;
|
|
if(y!=x) { /* raise underflow flag */
|
|
INSERT_WORDS(y,hx,lx);
|
|
return y;
|
|
}
|
|
}
|
|
INSERT_WORDS(x,hx,lx);
|
|
return x;
|
|
}
|
|
weak_alias (__nextafter, nextafter)
|
|
#ifdef NO_LONG_DOUBLE
|
|
strong_alias (__nextafter, __nextafterl)
|
|
weak_alias (__nextafter, nextafterl)
|
|
#endif
|