1 /* 2 * Copyright (c) 1998, 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 #ifdef _ALLBSD_SOURCE 27 #include <machine/endian.h> 28 #elif __linux__ 29 #define __USE_BSD 1 30 #include <endian.h> 31 #endif 32 #include "jfdlibm.h" 33 34 #ifdef __NEWVALID /* special setup for Sun test regime */ 35 #if defined(i386) || defined(i486) || \ 36 defined(intel) || defined(x86) || defined(arm) || \ 37 defined(i86pc) || defined(ia64) 38 #define _LITTLE_ENDIAN 39 #endif 40 #endif 41 42 #ifdef _LITTLE_ENDIAN 43 #define __HI(x) *(1+(int*)&x) 44 #define __LO(x) *(int*)&x 45 #define __HIp(x) *(1+(int*)x) 46 #define __LOp(x) *(int*)x 47 #else 48 #define __HI(x) *(int*)&x 49 #define __LO(x) *(1+(int*)&x) 50 #define __HIp(x) *(int*)x 51 #define __LOp(x) *(1+(int*)x) 52 #endif 53 54 #ifndef __P 55 #ifdef __STDC__ 56 #define __P(p) p 57 #else 58 #define __P(p) () 59 #endif 60 #endif 61 62 /* 63 * ANSI/POSIX 64 */ 65 66 extern int signgam; 67 68 #define MAXFLOAT ((float)3.40282346638528860e+38) 69 70 enum fdversion {fdlibm_ieee = -1, fdlibm_svid, fdlibm_xopen, fdlibm_posix}; 71 72 #define _LIB_VERSION_TYPE enum fdversion 73 #define _LIB_VERSION _fdlib_version 74 75 /* if global variable _LIB_VERSION is not desirable, one may 76 * change the following to be a constant by: 77 * #define _LIB_VERSION_TYPE const enum version 78 * In that case, after one initializes the value _LIB_VERSION (see 79 * s_lib_version.c) during compile time, it cannot be modified 80 * in the middle of a program 81 */ 82 extern _LIB_VERSION_TYPE _LIB_VERSION; 83 84 #define _IEEE_ fdlibm_ieee 85 #define _SVID_ fdlibm_svid 86 #define _XOPEN_ fdlibm_xopen 87 #define _POSIX_ fdlibm_posix 88 89 struct exception { 90 int type; 91 char *name; 92 double arg1; 93 double arg2; 94 double retval; 95 }; 96 97 #define HUGE MAXFLOAT 98 99 /* 100 * set X_TLOSS = pi*2**52, which is possibly defined in <values.h> 101 * (one may replace the following line by "#include <values.h>") 102 */ 103 104 #define X_TLOSS 1.41484755040568800000e+16 105 106 #define DOMAIN 1 107 #define SING 2 108 #define OVERFLOW 3 109 #define UNDERFLOW 4 110 #define TLOSS 5 111 #define PLOSS 6 112 113 /* 114 * ANSI/POSIX 115 */ 116 extern double acos __P((double)); 117 extern double asin __P((double)); 118 extern double atan __P((double)); 119 extern double atan2 __P((double, double)); 120 extern double cos __P((double)); 121 extern double sin __P((double)); 122 extern double tan __P((double)); 123 124 extern double cosh __P((double)); 125 extern double sinh __P((double)); 126 extern double tanh __P((double)); 127 128 extern double exp __P((double)); 129 extern double frexp __P((double, int *)); 130 extern double ldexp __P((double, int)); 131 extern double log __P((double)); 132 extern double log10 __P((double)); 133 extern double modf __P((double, double *)); 134 135 extern double sqrt __P((double)); 136 137 extern double ceil __P((double)); 138 extern double fabs __P((double)); 139 extern double floor __P((double)); 140 extern double fmod __P((double, double)); 141 142 extern double hypot __P((double, double)); 143 extern int isnan __P((double)); 144 extern int finite __P((double)); 145 146 extern double atanh __P((double)); 147 extern double cbrt __P((double)); 148 extern double logb __P((double)); 149 extern double nextafter __P((double, double)); 150 extern double remainder __P((double, double)); 151 #ifdef _SCALB_INT 152 extern double scalb __P((double, int)); 153 #else 154 extern double scalb __P((double, double)); 155 #endif 156 157 extern int matherr __P((struct exception *)); 158 159 /* 160 * IEEE Test Vector 161 */ 162 extern double significand __P((double)); 163 164 /* 165 * Functions callable from C, intended to support IEEE arithmetic. 166 */ 167 extern double copysign __P((double, double)); 168 extern int ilogb __P((double)); 169 extern double rint __P((double)); 170 extern double scalbn __P((double, int)); 171 172 /* 173 * BSD math library entry points 174 */ 175 extern double expm1 __P((double)); 176 extern double log1p __P((double)); 177 178 /* ieee style elementary functions */ 179 extern double __ieee754_sqrt __P((double)); 180 extern double __ieee754_acos __P((double)); 181 extern double __ieee754_log __P((double)); 182 extern double __ieee754_atanh __P((double)); 183 extern double __ieee754_asin __P((double)); 184 extern double __ieee754_atan2 __P((double,double)); 185 extern double __ieee754_exp __P((double)); 186 extern double __ieee754_cosh __P((double)); 187 extern double __ieee754_fmod __P((double,double)); 188 extern double __ieee754_log10 __P((double)); 189 extern double __ieee754_sinh __P((double)); 190 extern double __ieee754_hypot __P((double,double)); 191 extern double __ieee754_remainder __P((double,double)); 192 extern int __ieee754_rem_pio2 __P((double,double*)); 193 #ifdef _SCALB_INT 194 extern double __ieee754_scalb __P((double,int)); 195 #else 196 extern double __ieee754_scalb __P((double,double)); 197 #endif 198 199 /* fdlibm kernel function */ 200 extern double __kernel_standard __P((double,double,int)); 201 extern double __kernel_sin __P((double,double,int)); 202 extern double __kernel_cos __P((double,double)); 203 extern double __kernel_tan __P((double,double,int)); 204 extern int __kernel_rem_pio2 __P((double*,double*,int,int,int,const int*));