From 3e5f55575217bd22a301a77eafe00f2f3a727107 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Tue, 25 Mar 1997 01:45:04 +0000 Subject: Update. 1997-03-25 02:15 Ulrich Drepper * gmon/gmon.c: Optimize a bit by using more sets of records to write in a single writev call. * math/math.h: Add definitions of macros __MATHCALLX and __MATHDECLX. * math/mathcalls.h: Use __MATHCALLX for fabs, infnan, copysign, nan, isnan, nextafter, trunc, __fpclassify and signbit to mark as `const'. Use __MATHDECLX for isinf and finite. * sysdeps/generic/setenv.c [_LIBC]: Define __clearenv and make clearenv a weak alias. Implement complex exponential function. * sysdeps/libm-ieee754/s_cexp.c: New file. * sysdeps/libm-ieee754/s_cexpf.c: New file. * sysdeps/libm-ieee754/s_cexpl.c: New file. * sysdeps/libm-ieee754/s_nan.c: Define function as __nan and make nan a weak alias. * sysdeps/libm-ieee754/s_nanf.c: Likewise for nanf. * sysdeps/libm-ieee754/s_nanl.c: Likewise for nanl. * sysdeps/unix/sysv/linux/iovec.h: Don't use kernel header because of type clashes. Add all definitions here. * sysdeps/unix/sysv/linux/shmat.c: Likewise. Correct types according to XPG4.2. * sysdeps/unix/sysv/linux/shmdt.c: Likewise. * sysdeps/unix/sysv/linux/msgrcv.c: Likewise. * sysvipc/sys/shm.h (shmat, shmdt): Correct types. * sysdeps/unix/sysv/linux/sys/kd.h: Define _LINUX_TYPES_H to avoid use of kernel types. 1997-03-25 00:00 Ulrich Drepper * sysdeps/unix/sysv/linux/netinet/ip.h (struct ip_timestamp): Correct typos. Reported by a sun . 1997-03-20 21:58 Andreas Schwab * sysdeps/libm-ieee754/s_asinhl.c: Fix sign of result. 1997-03-20 16:20 Andreas Schwab * sysdeps/libm-ieee754/e_atan2l.c: Fix typo. 1997-03-20 14:23 Andreas Schwab * sysdeps/m68k/fpu/__math.h (__logb, logb): Don't define. * sysdeps/m68k/fpu/s_logb.c: Removed. * sysdeps/m68k/fpu/s_logbf.c: Removed. * sysdeps/m68k/fpu/s_logbl.c: Removed. * sysdeps/m68k/fpu/__math.h (__ieee754_atan2, __ieee754_pow): Don't define here. * sysdeps/m68k/fpu/e_atan2.c: Rewritten. * sysdeps/m68k/fpu/e_pow.c: Likewise. * sysdeps/m68k/fpu/e_atan2f.c: Based on e_atan2.c. * sysdeps/m68k/fpu/e_atan2l.c: Likewise. * sysdeps/m68k/fpu/e_powf.c: Based on e_pow.c. * sysdeps/m68k/fpu/e_powl.c: Likewise. * sysdeps/m68k/fpu/s_log2.c: New file. * sysdeps/m68k/fpu/s_log2f.c: New file. * sysdeps/m68k/fpu/s_log2l.c: New file. * sysdeps/m68k/fpu/s_exp2.c: New file. * sysdeps/m68k/fpu/s_exp2f.c: New file. * sysdeps/m68k/fpu/s_exp2l.c: New file. 1997-03-20 14:46 Andreas Schwab * Makeconfig (all): Make sure this is always the default goal. 1997-03-20 11:09 Andreas Schwab * math/libm-test.c: Increase epsilon in many places. Fix many typos. Allow optinal argument also for short option. 1997-03-20 11:09 Andreas Schwab * math/Makefile ($(objpfx)$(tests)): Link against libm. 1997-03-24 23:14 Ulrich Drepper * sysdeps/libm-ieee754/s_fpclassifyl.c: Correct recognition of denormalized numbers. * sysdeps/i386/huge_val.h: Remove references to byte order macros. Don't include . 1997-03-19 15:18 Andreas Schwab * sysdeps/m68k/huge_val.h: Remove references to byte order macros. Don't include . 1997-03-24 23:09 Ulrich Drepper * inet/rcmd.c (iruserok): Use access instead of euidaccess. 1997-03-15 18:08 Andreas Schwab * math/cmathcalls.h: Remove whitespace before function name in use of __MATHDECL macro, to make it compilable with a traditional preprocessor. 1997-03-24 15:31 Ulrich Drepper * configure.in: Use AC_PROG_CC instead of AC_PROG_TOOL to find compiler. 1997-03-24 02:34 Ulrich Drepper * sysdeps/libm-ieee754/s_finitel.c (__finitel): Shift return value by 31 positions to get 0/1 result. Patch by Joe Keane . 1997-03-23 12:15 H.J. Lu * posix/getopt.c (__getopt_nonoption_flags): Make it extern to prevent from ld linking in getopt.o even if there is another incompatible one. * posix/getopt_init.c (__getopt_nonoption_flags): Remove extern. 1997-03-23 23:30 Thorsten Kukuk * nis/nis_call.c (__do_niscall): Print message if cold start file does not exist. * nis/nis_file.c: Don't print error messages. * nis/nis_local_name.c (nis_local_host): Fix pointer errors. * nis/rpcsvc/ypclnt.h: Fix copyright and prototypes. * nis/rpcsvc/nis.h: Likewise. * nis/ypclnt.c: Fix prototypes. 1997-03-24 01:36 Ulrich Drepper * sysdeps/libm-i387/e_scalb.S: Pop additional result before returning. * sysdeps/libm-i387/e_scalbf.S: Likewise. * sysdeps/libm-i387/e_scalbl.S: Likewise. Reported by Andreas Jaeger . * elf/rtld.c (dl_main): Set main_map->l_opencount to 1 also if dynamic linker was called implicitly by the kernel. Reported by Eric Youngdale . * math/Makefile (CFLAGS-test-float.c, CFLAGS-test-double.c, CFLAGS-test-longdouble.c): New variables. Set to -fno-inline to prevent clever optimizations which corrupt the tests. 1997-03-23 21:33 Andreas Jaeger * math/libm-test.c (scalb_test): New function. (sqrt_test): New function. (scalbn_test): New function. (ilogb_test): New function. (main): Added calls for new test functions. (ldexp_test): Add another test for ldexp(x,0). 1997-03-23 12:35 Andreas Jaeger * math/libm-test.c (remquo_test): Correct messages so that they match the tests. (copysign_test): Likewise. 1997-03-23 16:28 Ulrich Drepper * stdio-common/Makefile (routines): Add printf_size. * stdio-common/printf.h: Add declarations for printf_size and printf_size_info. * stdio-common/printf-parse.h (__printf_arginfo_table): Correct declaration. (parse_one_spec): Test whether __printf_function_table is not NULL before using registered handlers and don't test __printf_arginfo_table. Update nargs also when handler is registered. * stdio-common/vfprintf.c (vfprintf): Count number of specifiers processed in fast loop. * stdio-common/printf_size: New file. 1997-03-22 04:53 Ulgmon_out_readrich Drepper --- sysdeps/m68k/fpu/e_pow.c | 137 ++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 135 insertions(+), 2 deletions(-) (limited to 'sysdeps/m68k/fpu/e_pow.c') diff --git a/sysdeps/m68k/fpu/e_pow.c b/sysdeps/m68k/fpu/e_pow.c index 29798a15ca..970e8b821b 100644 --- a/sysdeps/m68k/fpu/e_pow.c +++ b/sysdeps/m68k/fpu/e_pow.c @@ -1,2 +1,135 @@ -#define FUNC __ieee754_pow -#include +/* Copyright (C) 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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. */ + +#define __LIBC_M81_MATH_INLINES +#include +#include "math_private.h" + +#ifndef SUFF +#define SUFF +#endif +#ifndef float_type +#define float_type double +#endif + +#define __CONCATX(a,b) __CONCAT(a,b) + +float_type +__CONCATX(__ieee754_pow,SUFF) (float_type x, float_type y) +{ + float_type z; + float_type ax; + + if (y == 0.0) + return 1.0; + if (x != x || y != y) + return x + y; + + if (__m81_u(__CONCATX(__isinf,SUFF)) (y)) + { + ax = __CONCATX(fabs,SUFF) (x); + if (ax == 1) + return y - y; + if (ax > 1) + return y > 0 ? y : 0; + else + return y < 0 ? -y : 0; + } + + if (__CONCATX(fabs,SUFF) (y) == 1) + return y > 0 ? x : 1 / x; + + if (y == 2) + return x * x; + if (y == 0 && x >= 0) + return __m81_u(__CONCATX(__ieee754_sqrt,SUFF)) (x); + + if (x == 10.0) + { + __asm ("ftentox%.x %1, %0" : "=f" (z) : "f" (y)); + return z; + } + if (x == 2.0) + { + __asm ("ftwotox%.x %1, %0" : "=f" (z) : "f" (y)); + return z; + } + + ax = __CONCATX(fabs,SUFF) (x); + if (__m81_u(__CONCATX(__isinf,SUFF)) (x) || x == 0 || ax == 1) + { + z = ax; + if (y < 0) + z = 1 / z; + if (signbit (x)) + { + float_type temp = __m81_u (__CONCATX(__rint,SUFF)) (y); + if (y != temp) + { + if (x == -1) + z = (z - z) / (z - z); + } + else + { + if (sizeof (float_type) == sizeof (float)) + { + long i = (long) y; + if (i & 1) + z = -z; + } + else + { + long long i = (long long) y; + if ((float_type) i == y && i & 1) + z = -z; + } + } + } + return z; + } + + if (x < 0.0) + { + float_type temp = __m81_u (__CONCATX(__rint,SUFF)) (y); + if (y == temp) + { + long long i = (long long) y; + z = (__m81_u(__CONCATX(__ieee754_exp,SUFF)) + (y * __m81_u(__CONCATX(__ieee754_log,SUFF)) (-x))); + if (sizeof (float_type) == sizeof (float)) + { + long i = (long) y; + if (i & 1) + z = -z; + } + else + { + /* If the conversion to long long was inexact assume that y + is an even integer. */ + if ((float_type) i == y && i & 1) + z = -z; + } + } + else + z = (x - x) / (x - x); + } + else + z = (__m81_u(__CONCATX(__ieee754_exp,SUFF)) + (y * __m81_u(__CONCATX(__ieee754_log,SUFF)) (x))); + return z; +} -- cgit 1.4.1