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glibc  2.9
upow.h
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00001 /*
00002  * IBM Accurate Mathematical Library
00003  * Written by International Business Machines Corp.
00004  * Copyright (C) 2001, 2002 Free Software Foundation, Inc.
00005  *
00006  * This program is free software; you can redistribute it and/or modify
00007  * it under the terms of the GNU Lesser General Public License as published by
00008  * the Free Software Foundation; either version 2.1 of the License, or
00009  * (at your option) any later version.
00010  *
00011  * This program is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  * GNU Lesser General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Lesser General Public License
00017  * along with this program; if not, write to the Free Software
00018  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
00019  */
00020 
00021 /******************************************************************/
00022 /*                                                                */
00023 /* MODULE_NAME:upow.h                                             */
00024 /*                                                                */
00025 /* common data and variables prototype and definition             */
00026 /******************************************************************/
00027 
00028 #ifndef UPOW_H
00029 #define UPOW_H
00030 
00031 #include "mydefs.h"
00032 
00033 #ifdef BIG_ENDI
00034   const static mynumber
00035  nZERO     = {{0x80000000, 0}},      /* -0.0          */
00036  INF            = {{0x7ff00000, 0x00000000}}, /* INF           */
00037  nINF           = {{0xfff00000, 0x00000000}}, /* -INF          */
00038  NaNQ           = {{0x7ff80000, 0x00000000}}, /* NaNQ          */
00039  sqrt_2         = {{0x3ff6a09e, 0x667f3bcc}}, /* sqrt(2)       */
00040  ln2a           = {{0x3fe62e42, 0xfefa3800}}, /* ln(2) 43 bits */
00041  ln2b           = {{0x3d2ef357, 0x93c76730}}, /* ln(2)-ln2a    */
00042  bigu           = {{0x4297ffff, 0xfffffd2c}}, /* 1.5*2**42 -724*2**-10  */
00043  bigv           = {{0x4207ffff, 0xfff8016a}}, /* 1.5*2**33-1+362*2**-19  */
00044  t52            = {{0x43300000, 0x00000000}}, /* 2**52         */
00045  two52e         = {{0x43300000, 0x000003ff}}; /* 2**52'        */
00046 
00047 #else
00048 #ifdef LITTLE_ENDI
00049   const static mynumber
00050  nZERO     = {{0, 0x80000000}},      /* -0.0          */
00051  INF            = {{0x00000000, 0x7ff00000}}, /* INF           */
00052  nINF           = {{0x00000000, 0xfff00000}}, /* -INF           */
00053  NaNQ           = {{0x00000000, 0x7ff80000}}, /* NaNQ          */
00054  sqrt_2         = {{0x667f3bcc, 0x3ff6a09e}}, /* sqrt(2)       */
00055  ln2a           = {{0xfefa3800, 0x3fe62e42}}, /* ln(2) 43 bits */
00056  ln2b           = {{0x93c76730, 0x3d2ef357}}, /* ln(2)-ln2a    */
00057  bigu           = {{0xfffffd2c, 0x4297ffff}}, /* 1.5*2**42 -724*2**-10  */
00058  bigv           = {{0xfff8016a, 0x4207ffff}}, /* 1.5*2**33-1+362*2**-19  */
00059  t52            = {{0x00000000, 0x43300000}}, /* 2**52         */
00060  two52e         = {{0x000003ff, 0x43300000}}; /* 2**52'        */
00061 
00062 #endif
00063 #endif
00064 
00065 const static double p2=-0.5, p3 =  3.3333333333333333333e-1, p4 = -0.25,
00066   q2 = -0.5, q3 = 3.3333333333331404e-01, q4 =  -2.4999999999996436e-01,
00067   q5 =  2.0000010500004459e-01, q6 =  -1.6666678916688004e-01,
00068   r3 =  3.33333333333333333372884096563030E-01,
00069   r4 = -2.50000000000000000213574153875908E-01,
00070   r5 =  1.99999999999683593814072199830603E-01,
00071   r6 = -1.66666666666065494878165510225378E-01,
00072   r7 =  1.42857517857114380606360005067609E-01,
00073   r8 = -1.25000449999974370683775964001702E-01,
00074   s3 =  0.333251953125000000e0,
00075  ss3 =  8.138020833333333333e-05,
00076   s4 = -2.500000000000000000e-01,
00077   s5 =  1.999999999999960937e-01,
00078   s6 = -1.666666666666592447e-01,
00079   s7 =  1.428571845238194705e-01,
00080   s8 = -1.250000500000149097e-01;
00081 #endif