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de800d8305
Remove the __slowexp code, so exp is no longer correctly rounded. The result is computed to about 70 bits precision so the worst case ulp error is about 0.500007 in nearest rounding mode. * manual/probes.texi: Remove slowexp probes. * math/Makefile: Remove slowexp. * sysdeps/generic/math_private.h (__slowexp): Remove. * sysdeps/ieee754/dbl-64/e_exp.c (__ieee754_exp): Remove __slowexp and document error bounds. * sysdeps/i386/fpu/slowexp.c: Remove. * sysdeps/ia64/fpu/slowexp.c: Remove. * sysdeps/ieee754/dbl-64/slowexp.c: Remove. * sysdeps/ieee754/dbl-64/uexp.h (err_0): Remove. * sysdeps/m68k/m680x0/fpu/slowexp.c: Remove. * sysdeps/powerpc/power4/fpu/Makefile (CPPFLAGS-slowexp.c): Remove. * sysdeps/x86_64/fpu/multiarch/Makefile: Remove slowexp-fma. * sysdeps/x86_64/fpu/multiarch/e_exp-avx.c (__slowexp): Remove. * sysdeps/x86_64/fpu/multiarch/e_exp-fma.c (__slowexp): Remove. * sysdeps/x86_64/fpu/multiarch/e_exp-fma4.c (__slowexp): Remove. * sysdeps/x86_64/fpu/multiarch/slowexp-avx.c: Remove. * sysdeps/x86_64/fpu/multiarch/slowexp-fma.c: Remove. * sysdeps/x86_64/fpu/multiarch/slowexp-fma4.c: Remove.
69 lines
2.9 KiB
C
69 lines
2.9 KiB
C
/*
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* IBM Accurate Mathematical Library
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* Written by International Business Machines Corp.
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* Copyright (C) 2001-2018 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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/******************************************************************/
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/* */
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/* MODULE_NAME:uexp.h */
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/* */
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/* common data and variables prototype and definition */
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/******************************************************************/
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#ifndef UEXP_H
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#define UEXP_H
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#include "mydefs.h"
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const static double zero = 0.0, hhuge = 1.0e300, tiny = 1.0e-300;
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const static int4 bigint = 0x40862002,
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badint = 0x40876000,smallint = 0x3C8fffff;
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const static int4 hugeint = 0x7FFFFFFF, infint = 0x7ff00000;
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#ifdef BIG_ENDI
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const static mynumber inf = {{0x7FF00000, 0}}; /* inf */
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const static mynumber t256 = {{0x4ff00000, 0}}; /* 2^256 */
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const static mynumber ln_two1 = {{0x3FE62E42, 0xFEFA3800}};/*0.69314718055989033 */
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const static mynumber ln_two2 = {{0x3D2EF357, 0x93C76730}};/*5.4979230187083712e-14*/
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const static mynumber log2e = {{0x3FF71547, 0x652B82FE}};/* 1.4426950408889634 */
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const static mynumber p2 = {{0x3FE00000, 0x000004DC}};/* 0.50000000000013811 */
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const static mynumber p3 = {{0x3FC55555, 0x55555A0F}};/* 0.16666666666670024 */
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const static mynumber three33 = {{0x42180000, 0}}; /* 25769803776 */
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const static mynumber three51 = {{0x43380000, 0}}; /* 6755399441055744 */
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#else
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#ifdef LITTLE_ENDI
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const static mynumber inf = {{0, 0x7FF00000}}; /* inf */
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const static mynumber t256 = {{0, 0x4ff00000}}; /* 2^256 */
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const static mynumber ln_two1 = {{0xFEFA3800, 0x3FE62E42}};/*0.69314718055989033 */
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const static mynumber ln_two2 = {{0x93C76730, 0x3D2EF357}};/*5.4979230187083712e-14*/
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const static mynumber log2e = {{0x652B82FE, 0x3FF71547}};/* 1.4426950408889634 */
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const static mynumber p2 = {{0x000004DC, 0x3FE00000}};/* 0.50000000000013811 */
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const static mynumber p3 = {{0x55555A0F, 0x3FC55555}};/* 0.16666666666670024 */
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const static mynumber three33 = {{0, 0x42180000}}; /* 25769803776 */
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const static mynumber three51 = {{0, 0x43380000}}; /* 6755399441055744 */
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#endif
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#endif
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#endif
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