atnat.h

glibc 库, 不仅可以学习使用库函数,还可以学习函数的具体实现,是提高功力的好资料

/*
 * IBM Accurate Mathematical Library
 * Written by International Business Machines Corp.
 * Copyright (C) 2001 Free Software Foundation, Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 *
 * This program 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

/************************************************************************/
/*  MODULE_NAME: atnat.h                                                */
/*                                                                      */
/*                                                                      */
/* 	common data and variables definition for BIG or LITTLE ENDIAN   */
/************************************************************************/
#ifndef ATNAT_H
#define ATNAT_H

#define M 4

#ifdef BIG_ENDI
  static const number
  /* polynomial I */
/**/ d3             = {{0xbfd55555, 0x55555555} }, /* -0.333... */
/**/ d5             = {{0x3fc99999, 0x999997fd} }, /*  0.199... */
/**/ d7             = {{0xbfc24924, 0x923f7603} }, /* -0.142... */
/**/ d9             = {{0x3fbc71c6, 0xe5129a3b} }, /*  0.111... */
/**/ d11            = {{0xbfb74580, 0x22b13c25} }, /* -0.090... */
/**/ d13            = {{0x3fb375f0, 0x8b31cbce} }, /*  0.076... */
  /* polynomial II */
/**/ f3             = {{0xbfd55555, 0x55555555} }, /* -1/3      */
/**/ ff3            = {{0xbc755555, 0x55555555} }, /* -1/3-f3   */
/**/ f5             = {{0x3fc99999, 0x9999999a} }, /*  1/5      */
/**/ ff5            = {{0xbc699999, 0x9999999a} }, /*  1/5-f5   */
/**/ f7             = {{0xbfc24924, 0x92492492} }, /* -1/7      */
/**/ ff7            = {{0xbc624924, 0x92492492} }, /* -1/7-f7   */
/**/ f9             = {{0x3fbc71c7, 0x1c71c71c} }, /*  1/9      */
/**/ ff9            = {{0x3c5c71c7, 0x1c71c71c} }, /*  1/9-f9   */
/**/ f11            = {{0xbfb745d1, 0x745d1746} }, /* -1/11     */
/**/ f13            = {{0x3fb3b13b, 0x13b13b14} }, /*  1/13     */
/**/ f15            = {{0xbfb11111, 0x11111111} }, /* -1/15     */
/**/ f17            = {{0x3fae1e1e, 0x1e1e1e1e} }, /*  1/17     */
/**/ f19            = {{0xbfaaf286, 0xbca1af28} }, /* -1/19     */
  /* constants    */
/**/ zero           = {{0x00000000, 0x00000000} }, /*  0            */
/**/ one            = {{0x3ff00000, 0x00000000} }, /*  1            */
/**/ a              = {{0x3e4bb67a, 0x00000000} }, /*  1.290e-8     */
/**/ b              = {{0x3fb00000, 0x00000000} }, /*  1/16         */
/**/ c              = {{0x3ff00000, 0x00000000} }, /*  1            */
/**/ d              = {{0x40300000, 0x00000000} }, /*  16           */
/**/ e              = {{0x43349ff2, 0x00000000} }, /*  5.805e15     */
/**/ hpi            = {{0x3ff921fb, 0x54442d18} }, /*  pi/2         */
/**/ mhpi           = {{0xbff921fb, 0x54442d18} }, /* -pi/2         */
/**/ hpi1           = {{0x3c91a626, 0x33145c07} }, /*  pi/2-hpi     */
/**/ u1             = {{0x3c2d3382, 0x00000000} }, /*  7.915e-19    */
/**/ u21            = {{0x3c6dffc0, 0x00000000} }, /*  1.301e-17    */
/**/ u22            = {{0x3c527bd0, 0x00000000} }, /*  4.008e-18    */
/**/ u23            = {{0x3c3cd057, 0x00000000} }, /*  1.562e-18    */
/**/ u24            = {{0x3c329cdf, 0x00000000} }, /*  1.009e-18    */
/**/ u31            = {{0x3c3a1edf, 0x00000000} }, /*  1.416e-18    */
/**/ u32            = {{0x3c33f0e1, 0x00000000} }, /*  1.081e-18    */
/**/ u4             = {{0x3bf955e4, 0x00000000} }, /*  8.584e-20    */
/**/ u5             = {{0x3aaef2d1, 0x00000000} }, /*  5e-26        */
/**/ u6             = {{0x3a98c56d, 0x00000000} }, /*  2.001e-26    */
/**/ u7             = {{0x3a9375de, 0x00000000} }, /*  1.572e-26    */
/**/ u8             = {{0x3a6eeb36, 0x00000000} }, /*  3.122e-27    */
/**/ u9[M]          ={{{0x38c1aa5b, 0x00000000} }, /* 2.658e-35     */
/**/                  {{0x35c1aa4d, 0x00000000} }, /* 9.443e-50     */
/**/                  {{0x32c1aa88, 0x00000000} }, /* 3.355e-64     */
/**/                  {{0x11c1aa56, 0x00000000} }},/* 3.818e-223    */
/**/ two8           = {{0x40700000, 0x00000000} }, /*  2**8=256     */
/**/ two52          = {{0x43300000, 0x00000000} }; /*  2**52        */

#else
#ifdef LITTLE_ENDI
  static const number
  /* polynomial I */
/**/ d3             = {{0x55555555, 0xbfd55555} }, /* -0.333... */
/**/ d5             = {{0x999997fd, 0x3fc99999} }, /*  0.199... */
/**/ d7             = {{0x923f7603, 0xbfc24924} }, /* -0.142... */
/**/ d9             = {{0xe5129a3b, 0x3fbc71c6} }, /*  0.111... */
/**/ d11            = {{0x22b13c25, 0xbfb74580} }, /* -0.090... */
/**/ d13            = {{0x8b31cbce, 0x3fb375f0} }, /*  0.076... */
  /* polynomial II */
/**/ f3             = {{0x55555555, 0xbfd55555} }, /* -1/3      */
/**/ ff3            = {{0x55555555, 0xbc755555} }, /* -1/3-f3   */
/**/ f5             = {{0x9999999a, 0x3fc99999} }, /*  1/5      */
/**/ ff5            = {{0x9999999a, 0xbc699999} }, /*  1/5-f5   */
/**/ f7             = {{0x92492492, 0xbfc24924} }, /* -1/7      */
/**/ ff7            = {{0x92492492, 0xbc624924} }, /* -1/7-f7   */
/**/ f9             = {{0x1c71c71c, 0x3fbc71c7} }, /*  1/9      */
/**/ ff9            = {{0x1c71c71c, 0x3c5c71c7} }, /*  1/9-f9   */
/**/ f11            = {{0x745d1746, 0xbfb745d1} }, /* -1/11     */
/**/ f13            = {{0x13b13b14, 0x3fb3b13b} }, /*  1/13     */
/**/ f15            = {{0x11111111, 0xbfb11111} }, /* -1/15     */
/**/ f17            = {{0x1e1e1e1e, 0x3fae1e1e} }, /*  1/17     */
/**/ f19            = {{0xbca1af28, 0xbfaaf286} }, /* -1/19     */
  /* constants    */
/**/ zero           = {{0x00000000, 0x00000000} }, /*  0            */
/**/ one            = {{0x00000000, 0x3ff00000} }, /*  1            */
/**/ a              = {{0x00000000, 0x3e4bb67a} }, /*  1.290e-8     */
/**/ b              = {{0x00000000, 0x3fb00000} }, /*  1/16         */
/**/ c              = {{0x00000000, 0x3ff00000} }, /*  1            */
/**/ d              = {{0x00000000, 0x40300000} }, /*  16           */
/**/ e              = {{0x00000000, 0x43349ff2} }, /*  5.805e15     */
/**/ hpi            = {{0x54442d18, 0x3ff921fb} }, /*  pi/2         */
/**/ mhpi           = {{0x54442d18, 0xbff921fb} }, /* -pi/2         */
/**/ hpi1           = {{0x33145c07, 0x3c91a626} }, /*  pi/2-hpi     */
/**/ u1             = {{0x00000000, 0x3c2d3382} }, /*  7.915e-19    */
/**/ u21            = {{0x00000000, 0x3c6dffc0} }, /*  1.301e-17    */
/**/ u22            = {{0x00000000, 0x3c527bd0} }, /*  4.008e-18    */
/**/ u23            = {{0x00000000, 0x3c3cd057} }, /*  1.562e-18    */
/**/ u24            = {{0x00000000, 0x3c329cdf} }, /*  1.009e-18    */
/**/ u31            = {{0x00000000, 0x3c3a1edf} }, /*  1.416e-18    */
/**/ u32            = {{0x00000000, 0x3c33f0e1} }, /*  1.081e-18    */
/**/ u4             = {{0x00000000, 0x3bf955e4} }, /*  8.584e-20    */
/**/ u5             = {{0x00000000, 0x3aaef2d1} }, /*  5e-26        */
/**/ u6             = {{0x00000000, 0x3a98c56d} }, /*  2.001e-26    */
/**/ u7             = {{0x00000000, 0x3a9375de} }, /*  1.572e-26    */
/**/ u8             = {{0x00000000, 0x3a6eeb36} }, /*  3.122e-27    */
/**/ u9[M]          ={{{0x00000000, 0x38c1aa5b} }, /* 2.658e-35     */
/**/                  {{0x00000000, 0x35c1aa4d} }, /* 9.443e-50     */
/**/                  {{0x00000000, 0x32c1aa88} }, /* 3.355e-64     */
/**/                  {{0x00000000, 0x11c1aa56} }},/* 3.818e-223    */
/**/ two8           = {{0x00000000, 0x40700000} }, /*  2**8=256     */
/**/ two52          = {{0x00000000, 0x43300000} }; /*  2**52        */

#endif
#endif

#define  ZERO      zero.d
#define  ONE       one.d
#define  A         a.d
#define  B         b.d
#define  C         c.d
#define  D         d.d
#define  E         e.d
#define  HPI       hpi.d
#define  MHPI      mhpi.d
#define  HPI1      hpi1.d
#define  U1        u1.d
#define  U21       u21.d
#define  U22       u22.d
#define  U23       u23.d
#define  U24       u24.d
#define  U31       u31.d
#define  U32       u32.d
#define  U4        u4.d
#define  U5        u5.d
#define  U6        u6.d
#define  U7        u7.d
#define  U8        u8.d
#define  TWO8      two8.d
#define  TWO52     two52.d

#endif