sysdeps/ieee754/dbl-64/uexp.h

   1 /*
   2  * IBM Accurate Mathematical Library
   3  * Written by International Business Machines Corp.
   4  * Copyright (C) 2001 Free Software Foundation, Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU Lesser General Public License as published by
   8  * the Free Software Foundation; either version 2.1 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 /******************************************************************/
  21 /*                                                                */
  22 /* MODULE_NAME:uexp.h                                             */
  23 /*                                                                */
  24 /* common data and variables prototype and definition             */
  25 /******************************************************************/
  26
  27 #ifndef UEXP_H
  28 #define UEXP_H
  29
  30 #include "mydefs.h"
  31
  32 const static double one = 1.0, zero = 0.0, hhuge = 1.0e300, tiny = 1.0e-300,
  33 err_0 = 1.000014, err_1 = 0.000016;
  34 const static int4 bigint = 0x40862002,
  35              badint = 0x40876000,smallint = 0x3C8fffff;
  36 const static int4 hugeint = 0x7FFFFFFF, infint = 0x7ff00000;
  37
  38 #ifdef BIG_ENDI
  39 const static mynumber  inf  = {{0x7FF00000, 0}}; /* inf   */
  40 const static mynumber t256  = {{0x4ff00000, 0}}; /* 2^256 */
  41
  42 const static mynumber ln_two1  = {{0x3FE62E42, 0xFEFA3800}};/*0.69314718055989033 */
  43 const static mynumber ln_two2  = {{0x3D2EF357, 0x93C76730}};/*5.4979230187083712e-14*/
  44 const static mynumber log2e    = {{0x3FF71547, 0x652B82FE}};/* 1.4426950408889634 */
  45
  46 const static mynumber p2       = {{0x3FE00000, 0x000004DC}};/* 0.50000000000013811 */
  47 const static mynumber p3       = {{0x3FC55555, 0x55555A0F}};/* 0.16666666666670024 */
  48
  49 const static mynumber three33  = {{0x42180000, 0}};         /* 25769803776 */
  50 const static mynumber three51  = {{0x43380000, 0}};         /*  6755399441055744 */
  51
  52 #else
  53 #ifdef LITTLE_ENDI
  54  const static mynumber  inf  = {{0, 0x7FF00000}}; /* inf   */
  55  const static mynumber t256  = {{0, 0x4ff00000}}; /* 2^256 */
  56
  57  const static mynumber ln_two1 = {{0xFEFA3800, 0x3FE62E42}};/*0.69314718055989033 */
  58  const static mynumber ln_two2 = {{0x93C76730, 0x3D2EF357}};/*5.4979230187083712e-14*/
  59  const static mynumber log2e   = {{0x652B82FE, 0x3FF71547}};/* 1.4426950408889634 */
  60
  61  const static mynumber p2      = {{0x000004DC, 0x3FE00000}};/* 0.50000000000013811 */
  62  const static mynumber p3      = {{0x55555A0F, 0x3FC55555}};/* 0.16666666666670024 */
  63
  64  const static mynumber three33 = {{0, 0x42180000}};   /*  25769803776      */
  65  const static mynumber three51 = {{0, 0x43380000}};   /*  6755399441055744 */
  66
  67 #endif
  68 #endif
  69 #endif