1 2 /* 3 * Copyright (c) 1998, 2011, 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 #include "jfdlibm.h" 28 29 #ifdef __NEWVALID /* special setup for Sun test regime */ 30 #if defined(i386) || defined(i486) || \ 31 defined(intel) || defined(x86) || defined(arm) || \ 32 defined(i86pc) || defined(_M_IA64) || defined(ia64) 33 #define _LITTLE_ENDIAN 34 #endif 35 #endif 36 37 #ifdef _LITTLE_ENDIAN 38 #define __HI(x) *(1+(int*)&x) 39 #define __LO(x) *(int*)&x 40 #define __HIp(x) *(1+(int*)x) 41 #define __LOp(x) *(int*)x 42 #else 43 #define __HI(x) *(int*)&x 44 #define __LO(x) *(1+(int*)&x) 45 #define __HIp(x) *(int*)x 46 #define __LOp(x) *(1+(int*)x) 47 #endif 48 49 #ifndef __P 50 #ifdef __STDC__ 51 #define __P(p) p 52 #else 53 #define __P(p) () 54 #endif 55 #endif 56 57 /* 58 * ANSI/POSIX 59 */ 60 61 extern int signgam; 62 63 #define MAXFLOAT ((float)3.40282346638528860e+38) 64 65 enum fdversion {fdlibm_ieee = -1, fdlibm_svid, fdlibm_xopen, fdlibm_posix}; 66 67 #define _LIB_VERSION_TYPE enum fdversion 68 #define _LIB_VERSION _fdlib_version 69 70 /* if global variable _LIB_VERSION is not desirable, one may 71 * change the following to be a constant by: 72 * #define _LIB_VERSION_TYPE const enum version 73 * In that case, after one initializes the value _LIB_VERSION (see 74 * s_lib_version.c) during compile time, it cannot be modified 75 * in the middle of a program 76 */ 77 extern _LIB_VERSION_TYPE _LIB_VERSION; 78 79 #define _IEEE_ fdlibm_ieee 80 #define _SVID_ fdlibm_svid 81 #define _XOPEN_ fdlibm_xopen 82 #define _POSIX_ fdlibm_posix 83 84 struct exception { 85 int type; 86 char *name; 87 double arg1; 88 double arg2; 89 double retval; 90 }; 91 92 #define HUGE MAXFLOAT 93 94 /* 95 * set X_TLOSS = pi*2**52, which is possibly defined in <values.h> 96 * (one may replace the following line by "#include <values.h>") 97 */ 98 99 #define X_TLOSS 1.41484755040568800000e+16 100 101 #define DOMAIN 1 102 #define SING 2 103 #define OVERFLOW 3 104 #define UNDERFLOW 4 105 #define TLOSS 5 106 #define PLOSS 6 107 108 /* 109 * ANSI/POSIX 110 */ 111 extern double acos __P((double)); 112 extern double asin __P((double)); 113 extern double atan __P((double)); 114 extern double atan2 __P((double, double)); 115 extern double cos __P((double)); 116 extern double sin __P((double)); 117 extern double tan __P((double)); 118 119 extern double cosh __P((double)); 120 extern double sinh __P((double)); 121 extern double tanh __P((double)); 122 123 extern double exp __P((double)); 124 extern double frexp __P((double, int *)); 125 extern double ldexp __P((double, int)); 126 extern double log __P((double)); 127 extern double log10 __P((double)); 128 extern double modf __P((double, double *)); 129 130 extern double pow __P((double, double)); 131 extern double sqrt __P((double)); 132 133 extern double ceil __P((double)); 134 extern double fabs __P((double)); 135 extern double floor __P((double)); 136 extern double fmod __P((double, double)); 137 138 extern double erf __P((double)); 139 extern double erfc __P((double)); 140 extern double gamma __P((double)); 141 extern double hypot __P((double, double)); 142 extern int isnan __P((double)); 143 extern int finite __P((double)); 144 extern double j0 __P((double)); 145 extern double j1 __P((double)); 146 extern double jn __P((int, double)); 147 extern double lgamma __P((double)); 148 extern double y0 __P((double)); 149 extern double y1 __P((double)); 150 extern double yn __P((int, double)); 151 152 extern double acosh __P((double)); 153 extern double asinh __P((double)); 154 extern double atanh __P((double)); 155 extern double cbrt __P((double)); 156 extern double logb __P((double)); 157 extern double nextafter __P((double, double)); 158 extern double remainder __P((double, double)); 159 #ifdef _SCALB_INT 160 extern double scalb __P((double, int)); 161 #else 162 extern double scalb __P((double, double)); 163 #endif 164 165 extern int matherr __P((struct exception *)); 166 167 /* 168 * IEEE Test Vector 169 */ 170 extern double significand __P((double)); 171 172 /* 173 * Functions callable from C, intended to support IEEE arithmetic. 174 */ 175 extern double copysign __P((double, double)); 176 extern int ilogb __P((double)); 177 extern double rint __P((double)); 178 extern double scalbn __P((double, int)); 179 180 /* 181 * BSD math library entry points 182 */ 183 extern double expm1 __P((double)); 184 extern double log1p __P((double)); 185 186 /* 187 * Reentrant version of gamma & lgamma; passes signgam back by reference 188 * as the second argument; user must allocate space for signgam. 189 */ 190 #ifdef _REENTRANT 191 extern double gamma_r __P((double, int *)); 192 extern double lgamma_r __P((double, int *)); 193 #endif /* _REENTRANT */ 194 195 /* ieee style elementary functions */ 196 extern double __ieee754_sqrt __P((double)); 197 extern double __ieee754_acos __P((double)); 198 extern double __ieee754_acosh __P((double)); 199 extern double __ieee754_log __P((double)); 200 extern double __ieee754_atanh __P((double)); 201 extern double __ieee754_asin __P((double)); 202 extern double __ieee754_atan2 __P((double,double)); 203 extern double __ieee754_exp __P((double)); 204 extern double __ieee754_cosh __P((double)); 205 extern double __ieee754_fmod __P((double,double)); 206 extern double __ieee754_pow __P((double,double)); 207 extern double __ieee754_lgamma_r __P((double,int *)); 208 extern double __ieee754_gamma_r __P((double,int *)); 209 extern double __ieee754_lgamma __P((double)); 210 extern double __ieee754_gamma __P((double)); 211 extern double __ieee754_log10 __P((double)); 212 extern double __ieee754_sinh __P((double)); 213 extern double __ieee754_hypot __P((double,double)); 214 extern double __ieee754_j0 __P((double)); 215 extern double __ieee754_j1 __P((double)); 216 extern double __ieee754_y0 __P((double)); 217 extern double __ieee754_y1 __P((double)); 218 extern double __ieee754_jn __P((int,double)); 219 extern double __ieee754_yn __P((int,double)); 220 extern double __ieee754_remainder __P((double,double)); 221 extern int __ieee754_rem_pio2 __P((double,double*)); 222 #ifdef _SCALB_INT 223 extern double __ieee754_scalb __P((double,int)); 224 #else 225 extern double __ieee754_scalb __P((double,double)); 226 #endif 227 228 /* fdlibm kernel function */ 229 extern double __kernel_standard __P((double,double,int)); 230 extern double __kernel_sin __P((double,double,int)); 231 extern double __kernel_cos __P((double,double)); 232 extern double __kernel_tan __P((double,double,int)); 233 extern int __kernel_rem_pio2 __P((double*,double*,int,int,int,const int*));