1 2 /* @(#)fdlibm.h 1.5 04/04/22 */ 3 /* 4 * ==================================================== 5 * Copyright (C) 2004 by Sun Microsystems, Inc. All rights reserved. 6 * 7 * Permission to use, copy, modify, and distribute this 8 * software is freely granted, provided that this notice 9 * is preserved. 10 * ==================================================== 11 */ 12 13 #ifdef __cplusplus 14 extern "C" { 15 #endif 16 17 #ifndef __LITTLE_ENDIAN 18 /* Sometimes it's necessary to define __LITTLE_ENDIAN explicitly 19 but these catch some common cases. */ 20 #if defined(i386) || defined(i486) || \ 21 defined(intel) || defined(x86) || defined(i86pc) || \ 22 defined(__alpha) || defined(__osf__) || defined(__MIPSEL__) 23 #define __LITTLE_ENDIAN 24 #endif 25 #endif 26 27 #ifdef __LITTLE_ENDIAN 28 #define __HI(x) *(1+(int*)&x) 29 #define __LO(x) *(int*)&x 30 #define __HIp(x) *(1+(int*)x) 31 #define __LOp(x) *(int*)x 32 #else 33 #define __HI(x) *(int*)&x 34 #define __LO(x) *(1+(int*)&x) 35 #define __HIp(x) *(int*)x 36 #define __LOp(x) *(1+(int*)x) 37 #endif 38 39 #ifndef __P 40 #define __FDLIBM_P_DEFINED 41 #ifdef __STDC__ 42 #define __P(p) p 43 #else 44 #define __P(p) () 45 #endif 46 #endif 47 48 /* 49 * ANSI/POSIX 50 */ 51 52 extern int signgam; 53 54 #define MAXFLOAT ((float)3.40282346638528860e+38) 55 56 enum fdversion {fdlibm_ieee = -1, fdlibm_svid, fdlibm_xopen, fdlibm_posix}; 57 58 #define _LIB_VERSION_TYPE enum fdversion 59 #define _LIB_VERSION _fdlib_version 60 61 /* if global variable _LIB_VERSION is not desirable, one may 62 * change the following to be a constant by: 63 * #define _LIB_VERSION_TYPE const enum version 64 * In that case, after one initializes the value _LIB_VERSION (see 65 * s_lib_version.c) during compile time, it cannot be modified 66 * in the middle of a program 67 */ 68 extern _LIB_VERSION_TYPE _LIB_VERSION; 69 70 #define _IEEE_ fdlibm_ieee 71 #define _SVID_ fdlibm_svid 72 #define _XOPEN_ fdlibm_xopen 73 #define _POSIX_ fdlibm_posix 74 75 struct exception { 76 int type; 77 char *name; 78 double arg1; 79 double arg2; 80 double retval; 81 }; 82 83 #define HUGE MAXFLOAT 84 85 /* 86 * set X_TLOSS = pi*2**52, which is possibly defined in <values.h> 87 * (one may replace the following line by "#include <values.h>") 88 */ 89 90 #define X_TLOSS 1.41484755040568800000e+16 91 92 #define DOMAIN 1 93 #define SING 2 94 #define OVERFLOW 3 95 #define UNDERFLOW 4 96 #define TLOSS 5 97 #define PLOSS 6 98 99 /* 100 * ANSI/POSIX 101 */ 102 extern double ieee_acos __P((double)); 103 extern double ieee_asin __P((double)); 104 extern double ieee_atan __P((double)); 105 extern double ieee_atan2 __P((double, double)); 106 extern double ieee_cos __P((double)); 107 extern double ieee_sin __P((double)); 108 extern double ieee_tan __P((double)); 109 110 extern double ieee_cosh __P((double)); 111 extern double ieee_sinh __P((double)); 112 extern double ieee_tanh __P((double)); 113 114 extern double ieee_exp __P((double)); 115 extern double ieee_frexp __P((double, int *)); 116 extern double ieee_ldexp __P((double, int)); 117 extern double ieee_log __P((double)); 118 extern double ieee_log10 __P((double)); 119 extern double ieee_modf __P((double, double *)); 120 121 extern double ieee_pow __P((double, double)); 122 extern double ieee_sqrt __P((double)); 123 124 extern double ieee_ceil __P((double)); 125 extern double ieee_fabs __P((double)); 126 extern double ieee_floor __P((double)); 127 extern double ieee_fmod __P((double, double)); 128 129 extern double ieee_erf __P((double)); 130 extern double ieee_erfc __P((double)); 131 extern double ieee_gamma __P((double)); 132 extern double ieee_hypot __P((double, double)); 133 extern int ieee_isnan __P((double)); 134 extern int ieee_finite __P((double)); 135 extern double ieee_j0 __P((double)); 136 extern double ieee_j1 __P((double)); 137 extern double ieee_jn __P((int, double)); 138 extern double ieee_lgamma __P((double)); 139 extern double ieee_y0 __P((double)); 140 extern double ieee_y1 __P((double)); 141 extern double ieee_yn __P((int, double)); 142 143 extern double acosh __P((double)); 144 extern double asinh __P((double)); 145 extern double atanh __P((double)); 146 extern double ieee_cbrt __P((double)); 147 extern double ieee_logb __P((double)); 148 extern double ieee_nextafter __P((double, double)); 149 extern double ieee_remainder __P((double, double)); 150 #ifdef _SCALB_INT 151 extern double ieee_scalb __P((double, int)); 152 #else 153 extern double ieee_scalb __P((double, double)); 154 #endif 155 156 extern int ieee_matherr __P((struct exception *)); 157 158 /* 159 * IEEE Test Vector 160 */ 161 extern double ieee_significand __P((double)); 162 163 /* 164 * Functions callable from C, intended to support IEEE arithmetic. 165 */ 166 extern double ieee_copysign __P((double, double)); 167 extern int ieee_ilogb __P((double)); 168 extern double ieee_rint __P((double)); 169 extern double ieee_scalbn __P((double, int)); 170 171 /* 172 * BSD math library entry points 173 */ 174 extern double ieee_expm1 __P((double)); 175 extern double ieee_log1p __P((double)); 176 177 /* 178 * Reentrant version of gamma & lgamma; passes signgam back by reference 179 * as the second argument; user must allocate space for signgam. 180 */ 181 #ifdef _REENTRANT 182 extern double ieee_gamma_r __P((double, int *)); 183 extern double ieee_lgamma_r __P((double, int *)); 184 #endif /* _REENTRANT */ 185 186 /* ieee style elementary functions */ 187 extern double __ieee754_sqrt __P((double)); 188 extern double __ieee754_acos __P((double)); 189 extern double __ieee754_acosh __P((double)); 190 extern double __ieee754_log __P((double)); 191 extern double __ieee754_atanh __P((double)); 192 extern double __ieee754_asin __P((double)); 193 extern double __ieee754_atan2 __P((double,double)); 194 extern double __ieee754_exp __P((double)); 195 extern double __ieee754_cosh __P((double)); 196 extern double __ieee754_fmod __P((double,double)); 197 extern double __ieee754_pow __P((double,double)); 198 extern double __ieee754_lgamma_r __P((double,int *)); 199 extern double __ieee754_gamma_r __P((double,int *)); 200 extern double __ieee754_lgamma __P((double)); 201 extern double __ieee754_gamma __P((double)); 202 extern double __ieee754_log10 __P((double)); 203 extern double __ieee754_sinh __P((double)); 204 extern double __ieee754_hypot __P((double,double)); 205 extern double __ieee754_j0 __P((double)); 206 extern double __ieee754_j1 __P((double)); 207 extern double __ieee754_y0 __P((double)); 208 extern double __ieee754_y1 __P((double)); 209 extern double __ieee754_jn __P((int,double)); 210 extern double __ieee754_yn __P((int,double)); 211 extern double __ieee754_remainder __P((double,double)); 212 extern int __ieee754_rem_pio2 __P((double,double*)); 213 #ifdef _SCALB_INT 214 extern double __ieee754_scalb __P((double,int)); 215 #else 216 extern double __ieee754_scalb __P((double,double)); 217 #endif 218 219 /* fdlibm kernel function */ 220 extern double __kernel_standard __P((double,double,int)); 221 extern double __kernel_sin __P((double,double,int)); 222 extern double __kernel_cos __P((double,double)); 223 extern double __kernel_tan __P((double,double,int)); 224 extern int __kernel_rem_pio2 __P((double*,double*,int,int,int,const int*)); 225 226 #ifdef __FDLIBM_P_DEFINED 227 #undef __P 228 #endif 229 230 #ifdef __cplusplus 231 }; /* extern "C" */ 232 #endif 233
