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2 | /* @(#)fdlibm.h 5.1 93/09/24 */ |
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3 | /* |
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4 | * ==================================================== |
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5 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
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6 | * |
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7 | * Developed at SunPro, a Sun Microsystems, Inc. business. |
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8 | * Permission to use, copy, modify, and distribute this |
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9 | * software is freely granted, provided that this notice |
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10 | * is preserved. |
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11 | * ==================================================== |
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12 | */ |
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13 | |
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14 | /** |
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15 | @file |
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16 | @module {Math library} |
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17 | @short Fdlibm header |
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18 | |
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19 | Developed at SunPro, a Sun Microsystems, Inc. business. |
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20 | Permission to use, copy, modify, and distribute this |
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21 | software is freely granted, provided that this notice |
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22 | is preserved. |
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23 | */ |
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24 | |
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25 | #define __P(p) p |
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26 | |
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27 | /** @this is ANSI/POSIX */ |
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28 | extern int signgam; |
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29 | |
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30 | /** @this defines exterm values */ |
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31 | #define MAXFLOAT ((float)3.40282346638528860e+38) |
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32 | #define HUGE MAXFLOAT |
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33 | |
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34 | /** @multiple @hidden */ |
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35 | enum fdversion {fdlibm_ieee = -1, fdlibm_svid, fdlibm_xopen, fdlibm_posix}; |
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36 | #define _LIB_VERSION_TYPE enum fdversion |
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37 | #define _LIB_VERSION _fdlib_version |
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38 | |
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39 | /** @multiple @hidden if global variable _LIB_VERSION is not desirable, one may |
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40 | * change the following to be a constant by: |
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41 | * #define _LIB_VERSION_TYPE const enum version |
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42 | * In that case, after one initializes the value _LIB_VERSION (see |
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43 | * s_lib_version.c) during compile time, it cannot be modified |
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44 | * in the middle of a program |
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45 | */ |
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46 | extern _LIB_VERSION_TYPE _LIB_VERSION; |
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47 | |
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48 | #define _IEEE_ fdlibm_ieee |
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49 | #define _SVID_ fdlibm_svid |
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50 | #define _XOPEN_ fdlibm_xopen |
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51 | #define _POSIX_ fdlibm_posix |
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52 | |
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53 | /** @internal */ |
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54 | struct exception { |
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55 | int type; |
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56 | char *name; |
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57 | double arg1; |
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58 | double arg2; |
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59 | double retval; |
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60 | }; |
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61 | |
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62 | /** @this sets X_TLOSS to pi*2**52 */ |
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63 | #define X_TLOSS 1.41484755040568800000e+16 |
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64 | |
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65 | /** @multiple */ |
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66 | #define DOMAIN 1 |
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67 | #define SING 2 |
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68 | #define OVERFLOW 3 |
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69 | #define UNDERFLOW 4 |
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70 | #define TLOSS 5 |
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71 | #define PLOSS 6 |
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72 | |
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73 | /** |
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74 | * @multiple |
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75 | * @this is an ANSI/POSIX math function |
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76 | */ |
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77 | extern double acos __P((double)); |
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78 | extern double asin __P((double)); |
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79 | extern double atan __P((double)); |
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80 | extern double atan2 __P((double, double)); |
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81 | extern double cos __P((double)); |
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82 | extern double sin __P((double)); |
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83 | extern double tan __P((double)); |
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84 | |
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85 | extern double cosh __P((double)); |
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86 | extern double sinh __P((double)); |
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87 | extern double tanh __P((double)); |
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88 | |
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89 | extern double exp __P((double)); |
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90 | extern double frexp __P((double, int *)); |
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91 | extern double ldexp __P((double, int)); |
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92 | extern double log __P((double)); |
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93 | extern double log10 __P((double)); |
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94 | extern double modf __P((double, double *)); |
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95 | |
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96 | extern double pow __P((double, double)); |
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97 | extern double sqrt __P((double)); |
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98 | |
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99 | extern double ceil __P((double)); |
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100 | extern double fabs __P((double)); |
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101 | extern double floor __P((double)); |
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102 | extern double fmod __P((double, double)); |
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103 | |
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104 | extern double erf __P((double)); |
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105 | extern double erfc __P((double)); |
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106 | extern double gamma __P((double)); |
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107 | extern double hypot __P((double, double)); |
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108 | extern int isnan __P((double)); |
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109 | extern int finite __P((double)); |
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110 | extern double j0 __P((double)); |
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111 | extern double j1 __P((double)); |
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112 | extern double jn __P((int, double)); |
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113 | extern double lgamma __P((double)); |
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114 | extern double y0 __P((double)); |
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115 | extern double y1 __P((double)); |
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116 | extern double yn __P((int, double)); |
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117 | |
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118 | extern double acosh __P((double)); |
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119 | extern double asinh __P((double)); |
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120 | extern double atanh __P((double)); |
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121 | extern double cbrt __P((double)); |
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122 | extern double logb __P((double)); |
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123 | extern double nextafter __P((double, double)); |
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124 | extern double remainder __P((double, double)); |
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125 | #ifdef _SCALB_INT |
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126 | extern double scalb __P((double, int)); |
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127 | #else |
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128 | extern double scalb __P((double, double)); |
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129 | #endif |
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130 | |
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131 | extern int matherr __P((struct exception *)); |
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132 | |
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133 | /** |
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134 | * @this is IEEE Test Vector |
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135 | */ |
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136 | extern double significand __P((double)); |
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137 | |
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138 | /** |
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139 | * @multiple |
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140 | * @this is callable from C, intended to support IEEE arithmetic. |
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141 | */ |
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142 | extern double copysign __P((double, double)); |
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143 | extern int ilogb __P((double)); |
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144 | extern double rint __P((double)); |
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145 | extern double scalbn __P((double, int)); |
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146 | |
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147 | /** |
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148 | * @multiple |
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149 | * BSD math library entry point |
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150 | */ |
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151 | extern double expm1 __P((double)); |
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152 | extern double log1p __P((double)); |
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153 | |
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154 | /** |
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155 | * @multiple @this is a reentrant version of gamma & lgamma; passes |
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156 | * signgam back by reference as the second argument; user must |
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157 | * allocate space for signgam. |
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158 | */ |
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159 | #ifdef _REENTRANT |
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160 | extern double gamma_r __P((double, int *)); |
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161 | extern double lgamma_r __P((double, int *)); |
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162 | #endif /* _REENTRANT */ |
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163 | |
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164 | /** @internal @multiple @this is an IEEE style elementary function */ |
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165 | extern double __ieee754_sqrt __P((double)); |
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166 | extern double __ieee754_acos __P((double)); |
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167 | extern double __ieee754_acosh __P((double)); |
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168 | extern double __ieee754_log __P((double)); |
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169 | extern double __ieee754_atanh __P((double)); |
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170 | extern double __ieee754_asin __P((double)); |
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171 | extern double __ieee754_atan2 __P((double,double)); |
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172 | extern double __ieee754_exp __P((double)); |
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173 | extern double __ieee754_cosh __P((double)); |
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174 | extern double __ieee754_fmod __P((double,double)); |
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175 | extern double __ieee754_pow __P((double,double)); |
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176 | extern double __ieee754_lgamma_r __P((double,int *)); |
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177 | extern double __ieee754_gamma_r __P((double,int *)); |
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178 | extern double __ieee754_lgamma __P((double)); |
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179 | extern double __ieee754_gamma __P((double)); |
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180 | extern double __ieee754_log10 __P((double)); |
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181 | extern double __ieee754_sinh __P((double)); |
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182 | extern double __ieee754_hypot __P((double,double)); |
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183 | extern double __ieee754_j0 __P((double)); |
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184 | extern double __ieee754_j1 __P((double)); |
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185 | extern double __ieee754_y0 __P((double)); |
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186 | extern double __ieee754_y1 __P((double)); |
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187 | extern double __ieee754_jn __P((int,double)); |
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188 | extern double __ieee754_yn __P((int,double)); |
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189 | extern double __ieee754_remainder __P((double,double)); |
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190 | extern int __ieee754_rem_pio2 __P((double,double*)); |
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191 | #ifdef _SCALB_INT |
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192 | extern double __ieee754_scalb __P((double,int)); |
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193 | #else |
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194 | extern double __ieee754_scalb __P((double,double)); |
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195 | #endif |
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196 | |
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197 | /** @internal @multiple @this is a fdlibm kernel function */ |
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198 | extern double __kernel_standard __P((double,double,int)); |
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199 | extern double __kernel_sin __P((double,double,int)); |
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200 | extern double __kernel_cos __P((double,double)); |
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201 | extern double __kernel_tan __P((double,double,int)); |
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202 | extern int __kernel_rem_pio2 __P((double*,double*,int,int,int,const int*)); |
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