glibc/sysdeps/libm-ieee754/e_log10f.c
Ulrich Drepper 60c966358e Update.
1997-07-22 01:35  Ulrich Drepper  <drepper@cygnus.com>

	* Makerules (+make-deps): Use $(CFLAGS) in run of $(+mkdep) so
	that optimizing is also selected for dependency generation.

	* configure.in: Add machine description for TI c[34]x.

	* inet/Makefile (routines): Remove ntohl and ntohs.
	* inet/netinet/in.h: Use optimized version of hton? and ntoh?
	for little endian machines.
	* sysdeps/alpha/ntohl.s: Removed.
	* sysdeps/alpha/ntohs.s: Removed.
	* sysdeps/generic/ntohl.c: Removed.
	* sysdeps/generic/ntohs.c: Removed.
	* sysdeps/generic/htonl.c: Add aliases for ntohl.
	* sysdeps/vax/htonl.s: Likewise.
	* sysdeps/generic/htons.c: Add aliases for ntohs.
	* sysdeps/vax/htons.s: Likewise.
	* sysdeps/vax/ntohl.s: Removed.
	* sysdeps/vax/ntohs.s: Removed.
	* sysdeps/generic/bits/htontoh.h: New file.
	* sysdeps/i386/htonl.S: New file.
	* sysdeps/i386/htons.S: New file.
	* sysdeps/i386/i486/htonl.S: New file.

	* sysdeps/i386/fpu/bits/mathinline.h: Correct and optimized compare
	macros.

	* sysdeps/mips/dl-machine.h: Remove mips64 dependent parts.
	* sysdeps/mips/mips64/dl-machine.h: New file.

	* sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Don't install
	syscall-list.h.

1997-07-12  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* libc.map: Add missing symbol _obstack.

1997-07-14 08:22  H.J. Lu  <hjl@gnu.ai.mit.edu>

	* sysdeps/mips/rtld-parms: New.

	* sysdeps/unix/sysv/linux/mips/lxstat.h: Moved to
	* sysdeps/unix/sysv/linux/mips/lxstat.c: ...this.

	* sysdeps/unix/sysv/linux/mips/sgidef.h: Moved to
	* sysdeps/unix/sysv/linux/mips/sgidefs.h: ...this.

	* sysdeps/generic/dl-sysdep.c (_start): Change to ENTRY_POINT.

1997-07-17 08:39  H.J. Lu  <hjl@gnu.ai.mit.edu>

	* sysdeps/mips/dl-machine.h: Remove extra stuff.

1997-07-06 07:18  Geoff Keating  <geoffk@ozemail.com.au>

	* sysdeps/powerpc/bits/endian.h: Handle multiple endianess.

	* stdlib/grouping.h: Suppress gcc warning about testing
	unsigned char for less-than-zero.
	* stdio-common/printf_fp.c: Likewise.
	* stdio-common/vfprintf.c: Likewise.

	* sysdeps/powerpc/add_n.s: New file.
	* sysdeps/powerpc/sub_n.s: New file.
	* sysdeps/powerpc/lshift.s: Ported XCOFF->ELF (from GMP).
	* sysdeps/powerpc/mul_1.s: Ported XCOFF->ELF (from GMP).
	* sysdeps/powerpc/addmul_1.s: Ported XCOFF->ELF (from GMP).
	* sysdeps/powerpc/submul_1.s: Ported XCOFF->ELF (from GMP).
	* sysdeps/powerpc/rshift.s: Ported XCOFF->ELF (from GMP).

	* math/libm-test.c (cos_test, sin_test, sincos_test): Use
	precomputed pi/6 rather than having gcc calculate it, otherwise
	tests give inaccurate result due to inaccurate input.
	* math/libm.map: Add __fe_*_env constants to list of exported
	symbols.

	* sysdeps/libm-ieee754/s_isinf.c: Simplify, make faster.
	* sysdeps/libm-ieee754/s_isinff.c: Simplify, make faster.
	* sysdeps/libm-ieee754/s_atan2f.c: Correct value of pi to be correct
	round-to-nearest value.

	* sysdeps/libm-ieee754/e_log.c: Make sure exceptions are raised.
	* sysdeps/libm-ieee754/e_log10.c: Likewise.
	* sysdeps/libm-ieee754/e_log10f.c: Likewise.
	* sysdeps/libm-ieee754/e_logf.c: Likewise.
	* sysdeps/libm-ieee754/s_log1p.c: Likewise. Also use correct -Inf.
	* sysdeps/libm-ieee754/s_log1pf.c: Likewise. Also use correct -Inf.
	* sysdeps/libm-ieee754/s_log2.c: Likewise.
	* sysdeps/libm-ieee754/s_log2f.c: Likewise.

1997-07-15 21:54  Thorsten Kukuk  <kukuk@vt.uni-paderborn.de>

	* nis/nss_compat/compat-grp.c: Fix "buffer to small" problems
	and memory leaks.
	* nis/nss_compat/compat-pwd.c: Likewise.
	* nis/nss_compat/compat-spwd.c: Likewise.
	* nis/nss_nis/nis-alias.c: Likewise.
	* nis/nss_nis/nis-ethers.c: Likewise.
	* nis/nss_nis/nis-grp.c: Likewise.
	* nis/nss_nis/nis-hosts.c: Likewise.
	* nis/nss_nis/nis-network.c: Likewise.
	* nis/nss_nis/nis-proto.c: Likewise.
	* nis/nss_nis/nis-pwd.c: Likewise.
	* nis/nss_nis/nis-rpc.c: Likewise.
	* nis/nss_nis/nis-service.c: Likewise.
	* nis/nss_nis/nis-spwd.c: Likewise.
	* nis/nss_nisplus-alias.c: Likewise.
	* nis/nss_nisplus-ethers.c: Likewise.
	* nis/nss_nisplus-grp.c: Likewise.
	* nis/nss_nisplus-hosts.c: Likewise.
	* nis/nss_nisplus-netgrp.c: Likewise.
	* nis/nss_nisplus-network.c: Likewise.
	* nis/nss_nisplus-proto.c: Likewise.
	* nis/nss_nisplus-pwd.c: Likewise.
	* nis/nss_nisplus-rpc.c: Likewise.
	* nis/nss_nisplus-service.c: Likewise.
	* nis/nss_nisplus-spwd.c: Likewise.

	* nis/nss_nisplus-parse.c: If buffer to small, give -1 back.

1997-07-20  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/m68k/dl-machine.h (elf_machine_rela): Mention program
	name in warning message.
	* sysdeps/powerpc/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/sparc/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/sparc64/dl-machine.h (elf_machine_rela): Likewise.

	* sysdeps/i386/dl-machine.h (elf_machine_rel): Print program name
	first.

1997-07-20 19:33  Thorsten Kukuk  <kukuk@vt.uni-paderborn.de>

	* libc.map: Add _null_auth and _seterr_reply.

	* sunrpc/clnt_udp.c (clntudp_call): If xargs is NULL, don't encode it.
1997-07-22 00:10:33 +00:00

68 lines
1.7 KiB
C

/* e_log10f.c -- float version of e_log10.c.
* Conversion to float by Ian Lance Taylor, Cygnus Support, ian@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: e_log10f.c,v 1.5 1995/05/10 20:45:53 jtc Exp $";
#endif
#include "math.h"
#include "math_private.h"
#ifdef __STDC__
static const float
#else
static float
#endif
two25 = 3.3554432000e+07, /* 0x4c000000 */
ivln10 = 4.3429449201e-01, /* 0x3ede5bd9 */
log10_2hi = 3.0102920532e-01, /* 0x3e9a2080 */
log10_2lo = 7.9034151668e-07; /* 0x355427db */
#ifdef __STDC__
static const float zero = 0.0;
#else
static float zero = 0.0;
#endif
#ifdef __STDC__
float __ieee754_log10f(float x)
#else
float __ieee754_log10f(x)
float x;
#endif
{
float y,z;
int32_t i,k,hx;
GET_FLOAT_WORD(hx,x);
k=0;
if (hx < 0x00800000) { /* x < 2**-126 */
if ((hx&0x7fffffff)==0)
return -two25/(x-x); /* log(+-0)=-inf */
if (hx<0) return (x-x)/(x-x); /* log(-#) = NaN */
k -= 25; x *= two25; /* subnormal number, scale up x */
GET_FLOAT_WORD(hx,x);
}
if (hx >= 0x7f800000) return x+x;
k += (hx>>23)-127;
i = ((u_int32_t)k&0x80000000)>>31;
hx = (hx&0x007fffff)|((0x7f-i)<<23);
y = (float)(k+i);
SET_FLOAT_WORD(x,hx);
z = y*log10_2lo + ivln10*__ieee754_logf(x);
return z+y*log10_2hi;
}