1 2 /* 3 * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. Oracle designates this 9 * particular file as subject to the "Classpath" exception as provided 10 * by Oracle in the LICENSE file that accompanied this code. 11 * 12 * This code is distributed in the hope that it will be useful, but WITHOUT 13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 * version 2 for more details (a copy is included in the LICENSE file that 16 * accompanied this code). 17 * 18 * You should have received a copy of the GNU General Public License version 19 * 2 along with this work; if not, write to the Free Software Foundation, 20 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 21 * 22 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 23 * or visit www.oracle.com if you need additional information or have any 24 * questions. 25 */ 26 27 #ifdef _ALLBSD_SOURCE 28 #include <machine/endian.h> 29 #elif __linux__ 30 #define __USE_BSD 1 31 #include <endian.h> 32 #endif 33 #include "jfdlibm.h" 34 35 #ifdef __NEWVALID /* special setup for Sun test regime */ 36 #if defined(i386) || defined(i486) || \ 37 defined(intel) || defined(x86) || defined(arm) || \ 38 defined(i86pc) || defined(_M_IA64) || defined(ia64) 39 #define _LITTLE_ENDIAN 40 #endif 41 #endif 42 43 #ifdef VM_LITTLE_ENDIAN 44 #define __HI(x) *(1+(int*)&x) 45 #define __LO(x) *(int*)&x 46 #define __HIp(x) *(1+(int*)x) 47 #define __LOp(x) *(int*)x 48 #else 49 #define __HI(x) *(int*)&x 50 #define __LO(x) *(1+(int*)&x) 51 #define __HIp(x) *(int*)x 52 #define __LOp(x) *(1+(int*)x) 53 #endif 54 55 #ifndef __P 56 #ifdef __STDC__ 57 #define __P(p) p 58 #else 59 #define __P(p) () 60 #endif 61 #endif 62 63 /* 64 * ANSI/POSIX 65 */ 66 67 extern int signgam; 68 69 #define MAXFLOAT ((float)3.40282346638528860e+38) 70 71 enum fdversion {fdlibm_ieee = -1, fdlibm_svid, fdlibm_xopen, fdlibm_posix}; 72 73 #define _LIB_VERSION_TYPE enum fdversion 74 #define _LIB_VERSION _fdlib_version 75 76 /* if global variable _LIB_VERSION is not desirable, one may 77 * change the following to be a constant by: 78 * #define _LIB_VERSION_TYPE const enum version 79 * In that case, after one initializes the value _LIB_VERSION (see 80 * s_lib_version.c) during compile time, it cannot be modified 81 * in the middle of a program 82 */ 83 extern _LIB_VERSION_TYPE _LIB_VERSION; 84 85 #define _IEEE_ fdlibm_ieee 86 #define _SVID_ fdlibm_svid 87 #define _XOPEN_ fdlibm_xopen 88 #define _POSIX_ fdlibm_posix 89 90 struct exception { 91 int type; 92 char *name; 93 double arg1; 94 double arg2; 95 double retval; 96 }; 97 98 #define HUGE MAXFLOAT 99 100 /* 101 * set X_TLOSS = pi*2**52, which is possibly defined in <values.h> 102 * (one may replace the following line by "#include <values.h>") 103 */ 104 105 #define X_TLOSS 1.41484755040568800000e+16 106 107 #define DOMAIN 1 108 #define SING 2 109 #define OVERFLOW 3 110 #define UNDERFLOW 4 111 #define TLOSS 5 112 #define PLOSS 6 113 114 /* 115 * ANSI/POSIX 116 */ 117 extern double acos __P((double)); 118 extern double asin __P((double)); 119 extern double atan __P((double)); 120 extern double atan2 __P((double, double)); 121 extern double cos __P((double)); 122 extern double sin __P((double)); 123 extern double tan __P((double)); 124 125 extern double cosh __P((double)); 126 extern double sinh __P((double)); 127 extern double tanh __P((double)); 128 129 extern double exp __P((double)); 130 extern double frexp __P((double, int *)); 131 extern double ldexp __P((double, int)); 132 extern double log __P((double)); 133 extern double log10 __P((double)); 134 extern double modf __P((double, double *)); 135 136 extern double pow __P((double, double)); 137 extern double sqrt __P((double)); 138 139 extern double ceil __P((double)); 140 extern double fabs __P((double)); 141 extern double floor __P((double)); 142 extern double fmod __P((double, double)); 143 144 extern double hypot __P((double, double)); 145 extern int isnan __P((double)); 146 extern int finite __P((double)); 147 148 extern double atanh __P((double)); 149 extern double cbrt __P((double)); 150 extern double logb __P((double)); 151 extern double nextafter __P((double, double)); 152 extern double remainder __P((double, double)); 153 #ifdef _SCALB_INT 154 extern double scalb __P((double, int)); 155 #else 156 extern double scalb __P((double, double)); 157 #endif 158 159 extern int matherr __P((struct exception *)); 160 161 /* 162 * IEEE Test Vector 163 */ 164 extern double significand __P((double)); 165 166 /* 167 * Functions callable from C, intended to support IEEE arithmetic. 168 */ 169 extern double copysign __P((double, double)); 170 extern int ilogb __P((double)); 171 extern double rint __P((double)); 172 extern double scalbn __P((double, int)); 173 174 /* 175 * BSD math library entry points 176 */ 177 extern double expm1 __P((double)); 178 extern double log1p __P((double)); 179 180 /* ieee style elementary functions */ 181 extern double __ieee754_sqrt __P((double)); 182 extern double __ieee754_acos __P((double)); 183 extern double __ieee754_log __P((double)); 184 extern double __ieee754_atanh __P((double)); 185 extern double __ieee754_asin __P((double)); 186 extern double __ieee754_atan2 __P((double,double)); 187 extern double __ieee754_exp __P((double)); 188 extern double __ieee754_cosh __P((double)); 189 extern double __ieee754_fmod __P((double,double)); 190 extern double __ieee754_pow __P((double,double)); 191 extern double __ieee754_log10 __P((double)); 192 extern double __ieee754_sinh __P((double)); 193 extern double __ieee754_hypot __P((double,double)); 194 extern double __ieee754_remainder __P((double,double)); 195 extern int __ieee754_rem_pio2 __P((double,double*)); 196 #ifdef _SCALB_INT 197 extern double __ieee754_scalb __P((double,int)); 198 #else 199 extern double __ieee754_scalb __P((double,double)); 200 #endif 201 202 /* fdlibm kernel function */ 203 extern double __kernel_standard __P((double,double,int)); 204 extern double __kernel_sin __P((double,double,int)); 205 extern double __kernel_cos __P((double,double)); 206 extern double __kernel_tan __P((double,double,int)); 207 extern int __kernel_rem_pio2 __P((double*,double*,int,int,int,const int*)); 208