1 | |
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2 | /* @(#)k_standard.c 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 | #include "fdlibm.h" |
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16 | #include <errno.h> |
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17 | |
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18 | #ifndef _USE_WRITE |
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19 | #include <stdio.h> /* fputs(), stderr */ |
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20 | #define WRITE2(u,v) fputs(u, stderr) |
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21 | #else /* !defined(_USE_WRITE) */ |
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22 | #include <unistd.h> /* write */ |
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23 | #define WRITE2(u,v) write(2, u, v) |
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24 | #undef fflush |
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25 | #endif /* !defined(_USE_WRITE) */ |
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26 | |
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27 | #ifdef __STDC__ |
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28 | static const double zero = 0.0; /* used as const */ |
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29 | #else |
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30 | static double zero = 0.0; /* used as const */ |
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31 | #endif |
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32 | |
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33 | /* |
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34 | * Standard conformance (non-IEEE) on exception cases. |
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35 | * Mapping: |
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36 | * 1 -- acos(|x|>1) |
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37 | * 2 -- asin(|x|>1) |
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38 | * 3 -- atan2(+-0,+-0) |
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39 | * 4 -- hypot overflow |
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40 | * 5 -- cosh overflow |
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41 | * 6 -- exp overflow |
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42 | * 7 -- exp underflow |
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43 | * 8 -- y0(0) |
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44 | * 9 -- y0(-ve) |
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45 | * 10-- y1(0) |
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46 | * 11-- y1(-ve) |
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47 | * 12-- yn(0) |
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48 | * 13-- yn(-ve) |
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49 | * 14-- lgamma(finite) overflow |
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50 | * 15-- lgamma(-integer) |
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51 | * 16-- log(0) |
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52 | * 17-- log(x<0) |
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53 | * 18-- log10(0) |
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54 | * 19-- log10(x<0) |
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55 | * 20-- pow(0.0,0.0) |
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56 | * 21-- pow(x,y) overflow |
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57 | * 22-- pow(x,y) underflow |
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58 | * 23-- pow(0,negative) |
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59 | * 24-- pow(neg,non-integral) |
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60 | * 25-- sinh(finite) overflow |
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61 | * 26-- sqrt(negative) |
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62 | * 27-- fmod(x,0) |
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63 | * 28-- remainder(x,0) |
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64 | * 29-- acosh(x<1) |
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65 | * 30-- atanh(|x|>1) |
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66 | * 31-- atanh(|x|=1) |
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67 | * 32-- scalb overflow |
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68 | * 33-- scalb underflow |
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69 | * 34-- j0(|x|>X_TLOSS) |
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70 | * 35-- y0(x>X_TLOSS) |
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71 | * 36-- j1(|x|>X_TLOSS) |
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72 | * 37-- y1(x>X_TLOSS) |
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73 | * 38-- jn(|x|>X_TLOSS, n) |
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74 | * 39-- yn(x>X_TLOSS, n) |
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75 | * 40-- gamma(finite) overflow |
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76 | * 41-- gamma(-integer) |
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77 | * 42-- pow(NaN,0.0) |
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78 | */ |
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79 | |
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80 | |
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81 | #ifdef __STDC__ |
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82 | double __kernel_standard(double x, double y, int type) |
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83 | #else |
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84 | double __kernel_standard(x,y,type) |
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85 | double x,y; int type; |
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86 | #endif |
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87 | { |
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88 | struct exception exc; |
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89 | #ifndef HUGE_VAL /* this is the only routine that uses HUGE_VAL */ |
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90 | #define HUGE_VAL inf |
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91 | double inf = 0.0; |
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92 | |
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93 | SET_HIGH_WORD(inf,0x7ff00000); /* set inf to infinite */ |
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94 | #endif |
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95 | |
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96 | #ifdef _USE_WRITE |
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97 | /* (void) fflush(_stdout_r(p)); */ |
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98 | #endif |
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99 | exc.arg1 = x; |
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100 | exc.arg2 = y; |
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101 | exc.err = 0; |
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102 | switch(type) { |
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103 | case 1: |
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104 | case 101: |
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105 | /* acos(|x|>1) */ |
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106 | exc.type = DOMAIN; |
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107 | exc.name = type < 100 ? "acos" : "acosf"; |
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108 | exc.retval = zero; |
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109 | if (_LIB_VERSION == _POSIX_) |
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110 | errno = EDOM; |
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111 | else if (!matherr(&exc)) { |
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112 | /* if(_LIB_VERSION == _SVID_) { |
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113 | (void) WRITE2("acos: DOMAIN error\n", 19); |
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114 | } */ |
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115 | errno = EDOM; |
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116 | } |
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117 | break; |
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118 | case 2: |
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119 | case 102: |
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120 | /* asin(|x|>1) */ |
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121 | exc.type = DOMAIN; |
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122 | exc.name = type < 100 ? "asin" : "asinf"; |
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123 | exc.retval = zero; |
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124 | if(_LIB_VERSION == _POSIX_) |
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125 | errno = EDOM; |
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126 | else if (!matherr(&exc)) { |
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127 | /* if(_LIB_VERSION == _SVID_) { |
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128 | (void) WRITE2("asin: DOMAIN error\n", 19); |
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129 | } */ |
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130 | errno = EDOM; |
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131 | } |
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132 | break; |
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133 | case 3: |
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134 | case 103: |
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135 | /* atan2(+-0,+-0) */ |
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136 | exc.arg1 = y; |
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137 | exc.arg2 = x; |
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138 | exc.type = DOMAIN; |
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139 | exc.name = type < 100 ? "atan2" : "atan2f"; |
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140 | exc.retval = zero; |
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141 | if(_LIB_VERSION == _POSIX_) |
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142 | errno = EDOM; |
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143 | else if (!matherr(&exc)) { |
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144 | /* if(_LIB_VERSION == _SVID_) { |
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145 | (void) WRITE2("atan2: DOMAIN error\n", 20); |
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146 | } */ |
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147 | errno = EDOM; |
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148 | } |
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149 | break; |
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150 | case 4: |
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151 | case 104: |
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152 | /* hypot(finite,finite) overflow */ |
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153 | exc.type = OVERFLOW; |
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154 | exc.name = type < 100 ? "hypot" : "hypotf"; |
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155 | if (_LIB_VERSION == _SVID_) |
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156 | exc.retval = HUGE; |
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157 | else |
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158 | exc.retval = HUGE_VAL; |
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159 | if (_LIB_VERSION == _POSIX_) |
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160 | errno = ERANGE; |
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161 | else if (!matherr(&exc)) { |
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162 | errno = ERANGE; |
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163 | } |
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164 | break; |
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165 | case 5: |
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166 | case 105: |
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167 | /* cosh(finite) overflow */ |
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168 | exc.type = OVERFLOW; |
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169 | exc.name = type < 100 ? "cosh" : "coshf"; |
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170 | if (_LIB_VERSION == _SVID_) |
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171 | exc.retval = HUGE; |
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172 | else |
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173 | exc.retval = HUGE_VAL; |
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174 | if (_LIB_VERSION == _POSIX_) |
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175 | errno = ERANGE; |
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176 | else if (!matherr(&exc)) { |
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177 | errno = ERANGE; |
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178 | } |
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179 | break; |
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180 | case 6: |
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181 | case 106: |
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182 | /* exp(finite) overflow */ |
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183 | exc.type = OVERFLOW; |
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184 | exc.name = type < 100 ? "exp" : "expf"; |
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185 | if (_LIB_VERSION == _SVID_) |
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186 | exc.retval = HUGE; |
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187 | else |
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188 | exc.retval = HUGE_VAL; |
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189 | if (_LIB_VERSION == _POSIX_) |
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190 | errno = ERANGE; |
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191 | else if (!matherr(&exc)) { |
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192 | errno = ERANGE; |
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193 | } |
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194 | break; |
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195 | case 7: |
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196 | case 107: |
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197 | /* exp(finite) underflow */ |
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198 | exc.type = UNDERFLOW; |
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199 | exc.name = type < 100 ? "exp" : "expf"; |
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200 | exc.retval = zero; |
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201 | if (_LIB_VERSION == _POSIX_) |
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202 | errno = ERANGE; |
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203 | else if (!matherr(&exc)) { |
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204 | errno = ERANGE; |
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205 | } |
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206 | break; |
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207 | case 8: |
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208 | case 108: |
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209 | /* y0(0) = -inf */ |
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210 | exc.type = DOMAIN; /* should be SING for IEEE */ |
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211 | exc.name = type < 100 ? "y0" : "y0f"; |
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212 | if (_LIB_VERSION == _SVID_) |
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213 | exc.retval = -HUGE; |
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214 | else |
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215 | exc.retval = -HUGE_VAL; |
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216 | if (_LIB_VERSION == _POSIX_) |
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217 | errno = EDOM; |
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218 | else if (!matherr(&exc)) { |
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219 | /* if (_LIB_VERSION == _SVID_) { |
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220 | (void) WRITE2("y0: DOMAIN error\n", 17); |
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221 | } */ |
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222 | errno = EDOM; |
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223 | } |
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224 | break; |
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225 | case 9: |
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226 | case 109: |
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227 | /* y0(x<0) = NaN */ |
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228 | exc.type = DOMAIN; |
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229 | exc.name = type < 100 ? "y0" : "y0f"; |
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230 | if (_LIB_VERSION == _SVID_) |
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231 | exc.retval = -HUGE; |
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232 | else |
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233 | exc.retval = -HUGE_VAL; |
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234 | if (_LIB_VERSION == _POSIX_) |
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235 | errno = EDOM; |
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236 | else if (!matherr(&exc)) { |
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237 | /*if (_LIB_VERSION == _SVID_) { |
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238 | (void) WRITE2("y0: DOMAIN error\n", 17); |
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239 | } */ |
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240 | errno = EDOM; |
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241 | } |
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242 | break; |
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243 | case 10: |
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244 | case 110: |
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245 | /* y1(0) = -inf */ |
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246 | exc.type = DOMAIN; /* should be SING for IEEE */ |
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247 | exc.name = type < 100 ? "y1" : "y1f"; |
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248 | if (_LIB_VERSION == _SVID_) |
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249 | exc.retval = -HUGE; |
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250 | else |
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251 | exc.retval = -HUGE_VAL; |
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252 | if (_LIB_VERSION == _POSIX_) |
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253 | errno = EDOM; |
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254 | else if (!matherr(&exc)) { |
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255 | /* if (_LIB_VERSION == _SVID_) { |
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256 | (void) WRITE2("y1: DOMAIN error\n", 17); |
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257 | } */ |
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258 | errno = EDOM; |
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259 | } |
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260 | break; |
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261 | case 11: |
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262 | case 111: |
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263 | /* y1(x<0) = NaN */ |
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264 | exc.type = DOMAIN; |
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265 | exc.name = type < 100 ? "y1" : "y1f"; |
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266 | if (_LIB_VERSION == _SVID_) |
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267 | exc.retval = -HUGE; |
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268 | else |
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269 | exc.retval = -HUGE_VAL; |
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270 | if (_LIB_VERSION == _POSIX_) |
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271 | errno = EDOM; |
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272 | else if (!matherr(&exc)) { |
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273 | /* if (_LIB_VERSION == _SVID_) { |
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274 | (void) WRITE2("y1: DOMAIN error\n", 17); |
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275 | } */ |
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276 | errno = EDOM; |
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277 | } |
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278 | break; |
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279 | case 12: |
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280 | case 112: |
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281 | /* yn(n,0) = -inf */ |
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282 | exc.type = DOMAIN; /* should be SING for IEEE */ |
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283 | exc.name = type < 100 ? "yn" : "ynf"; |
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284 | if (_LIB_VERSION == _SVID_) |
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285 | exc.retval = -HUGE; |
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286 | else |
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287 | exc.retval = -HUGE_VAL; |
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288 | if (_LIB_VERSION == _POSIX_) |
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289 | errno = EDOM; |
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290 | else if (!matherr(&exc)) { |
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291 | /* if (_LIB_VERSION == _SVID_) { |
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292 | (void) WRITE2("yn: DOMAIN error\n", 17); |
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293 | } */ |
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294 | errno = EDOM; |
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295 | } |
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296 | break; |
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297 | case 13: |
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298 | case 113: |
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299 | /* yn(x<0) = NaN */ |
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300 | exc.type = DOMAIN; |
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301 | exc.name = type < 100 ? "yn" : "ynf"; |
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302 | if (_LIB_VERSION == _SVID_) |
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303 | exc.retval = -HUGE; |
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304 | else |
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305 | exc.retval = -HUGE_VAL; |
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306 | if (_LIB_VERSION == _POSIX_) |
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307 | errno = EDOM; |
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308 | else if (!matherr(&exc)) { |
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309 | /* if (_LIB_VERSION == _SVID_) { |
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310 | (void) WRITE2("yn: DOMAIN error\n", 17); |
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311 | } */ |
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312 | errno = EDOM; |
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313 | } |
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314 | break; |
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315 | case 14: |
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316 | case 114: |
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317 | /* lgamma(finite) overflow */ |
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318 | exc.type = OVERFLOW; |
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319 | exc.name = type < 100 ? "lgamma" : "lgammaf"; |
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320 | if (_LIB_VERSION == _SVID_) |
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321 | exc.retval = HUGE; |
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322 | else |
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323 | exc.retval = HUGE_VAL; |
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324 | if (_LIB_VERSION == _POSIX_) |
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325 | errno = ERANGE; |
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326 | else if (!matherr(&exc)) { |
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327 | errno = ERANGE; |
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328 | } |
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329 | break; |
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330 | case 15: |
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331 | case 115: |
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332 | /* lgamma(-integer) or lgamma(0) */ |
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333 | exc.type = SING; |
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334 | exc.name = type < 100 ? "lgamma" : "lgammaf"; |
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335 | if (_LIB_VERSION == _SVID_) |
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336 | exc.retval = HUGE; |
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337 | else |
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338 | exc.retval = HUGE_VAL; |
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339 | if (_LIB_VERSION == _POSIX_) |
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340 | errno = EDOM; |
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341 | else if (!matherr(&exc)) { |
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342 | /* if (_LIB_VERSION == _SVID_) { |
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343 | (void) WRITE2("lgamma: SING error\n", 19); |
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344 | } */ |
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345 | errno = EDOM; |
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346 | } |
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347 | break; |
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348 | case 16: |
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349 | case 116: |
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350 | /* log(0) */ |
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351 | exc.type = SING; |
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352 | exc.name = type < 100 ? "log" : "logf"; |
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353 | if (_LIB_VERSION == _SVID_) |
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354 | exc.retval = -HUGE; |
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355 | else |
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356 | exc.retval = -HUGE_VAL; |
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357 | if (_LIB_VERSION == _POSIX_) |
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358 | errno = ERANGE; |
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359 | else if (!matherr(&exc)) { |
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360 | /* if (_LIB_VERSION == _SVID_) { |
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361 | (void) WRITE2("log: SING error\n", 16); |
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362 | } */ |
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363 | errno = EDOM; |
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364 | } |
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365 | break; |
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366 | case 17: |
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367 | case 117: |
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368 | /* log(x<0) */ |
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369 | exc.type = DOMAIN; |
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370 | exc.name = type < 100 ? "log" : "logf"; |
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371 | if (_LIB_VERSION == _SVID_) |
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372 | exc.retval = -HUGE; |
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373 | else |
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374 | exc.retval = -HUGE_VAL; |
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375 | if (_LIB_VERSION == _POSIX_) |
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376 | errno = EDOM; |
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377 | else if (!matherr(&exc)) { |
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378 | /* if (_LIB_VERSION == _SVID_) { |
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379 | (void) WRITE2("log: DOMAIN error\n", 18); |
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380 | } */ |
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381 | errno = EDOM; |
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382 | } |
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383 | break; |
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384 | case 18: |
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385 | case 118: |
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386 | /* log10(0) */ |
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387 | exc.type = SING; |
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388 | exc.name = type < 100 ? "log10" : "log10f"; |
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389 | if (_LIB_VERSION == _SVID_) |
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390 | exc.retval = -HUGE; |
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391 | else |
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392 | exc.retval = -HUGE_VAL; |
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393 | if (_LIB_VERSION == _POSIX_) |
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394 | errno = ERANGE; |
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395 | else if (!matherr(&exc)) { |
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396 | /* if (_LIB_VERSION == _SVID_) { |
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397 | (void) WRITE2("log10: SING error\n", 18); |
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398 | } */ |
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399 | errno = EDOM; |
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400 | } |
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401 | break; |
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402 | case 19: |
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403 | case 119: |
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404 | /* log10(x<0) */ |
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405 | exc.type = DOMAIN; |
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406 | exc.name = type < 100 ? "log10" : "log10f"; |
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407 | if (_LIB_VERSION == _SVID_) |
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408 | exc.retval = -HUGE; |
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409 | else |
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410 | exc.retval = -HUGE_VAL; |
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411 | if (_LIB_VERSION == _POSIX_) |
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412 | errno = EDOM; |
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413 | else if (!matherr(&exc)) { |
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414 | /* if (_LIB_VERSION == _SVID_) { |
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415 | (void) WRITE2("log10: DOMAIN error\n", 20); |
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416 | } */ |
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417 | errno = EDOM; |
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418 | } |
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419 | break; |
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420 | case 20: |
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421 | case 120: |
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422 | /* pow(0.0,0.0) */ |
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423 | /* error only if _LIB_VERSION == _SVID_ */ |
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424 | exc.type = DOMAIN; |
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425 | exc.name = type < 100 ? "pow" : "powf"; |
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426 | exc.retval = zero; |
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427 | if (_LIB_VERSION != _SVID_) exc.retval = 1.0; |
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428 | else if (!matherr(&exc)) { |
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429 | /* (void) WRITE2("pow(0,0): DOMAIN error\n", 23); */ |
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430 | errno = EDOM; |
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431 | } |
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432 | break; |
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433 | case 21: |
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434 | case 121: |
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435 | /* pow(x,y) overflow */ |
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436 | exc.type = OVERFLOW; |
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437 | exc.name = type < 100 ? "pow" : "powf"; |
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438 | if (_LIB_VERSION == _SVID_) { |
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439 | exc.retval = HUGE; |
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440 | y *= 0.5; |
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441 | if(x<zero&&rint(y)!=y) exc.retval = -HUGE; |
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442 | } else { |
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443 | exc.retval = HUGE_VAL; |
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444 | y *= 0.5; |
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445 | if(x<zero&&rint(y)!=y) exc.retval = -HUGE_VAL; |
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446 | } |
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447 | if (_LIB_VERSION == _POSIX_) |
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448 | errno = ERANGE; |
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449 | else if (!matherr(&exc)) { |
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450 | errno = ERANGE; |
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451 | } |
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452 | break; |
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453 | case 22: |
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454 | case 122: |
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455 | /* pow(x,y) underflow */ |
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456 | exc.type = UNDERFLOW; |
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457 | exc.name = type < 100 ? "pow" : "powf"; |
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458 | exc.retval = zero; |
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459 | if (_LIB_VERSION == _POSIX_) |
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460 | errno = ERANGE; |
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461 | else if (!matherr(&exc)) { |
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462 | errno = ERANGE; |
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463 | } |
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464 | break; |
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465 | case 23: |
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466 | case 123: |
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467 | /* 0**neg */ |
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468 | exc.type = DOMAIN; |
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469 | exc.name = type < 100 ? "pow" : "powf"; |
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470 | if (_LIB_VERSION == _SVID_) |
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471 | exc.retval = zero; |
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472 | else |
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473 | exc.retval = -HUGE_VAL; |
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474 | if (_LIB_VERSION == _POSIX_) |
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475 | errno = EDOM; |
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476 | else if (!matherr(&exc)) { |
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477 | /* if (_LIB_VERSION == _SVID_) { |
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478 | (void) WRITE2("pow(0,neg): DOMAIN error\n", 25); |
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479 | } */ |
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480 | errno = EDOM; |
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481 | } |
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482 | break; |
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483 | case 24: |
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484 | case 124: |
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485 | /* neg**non-integral */ |
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486 | exc.type = DOMAIN; |
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487 | exc.name = type < 100 ? "pow" : "powf"; |
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488 | if (_LIB_VERSION == _SVID_) |
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489 | exc.retval = zero; |
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490 | else |
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491 | exc.retval = zero/zero; /* X/Open allow NaN */ |
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492 | if (_LIB_VERSION == _POSIX_) |
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493 | errno = EDOM; |
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494 | else if (!matherr(&exc)) { |
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495 | /* if (_LIB_VERSION == _SVID_) { |
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496 | (void) WRITE2("neg**non-integral: DOMAIN error\n", 32); |
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497 | } */ |
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498 | errno = EDOM; |
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499 | } |
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500 | break; |
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501 | case 25: |
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502 | case 125: |
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503 | /* sinh(finite) overflow */ |
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504 | exc.type = OVERFLOW; |
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505 | exc.name = type < 100 ? "sinh" : "sinhf"; |
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506 | if (_LIB_VERSION == _SVID_) |
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507 | exc.retval = ( (x>zero) ? HUGE : -HUGE); |
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508 | else |
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509 | exc.retval = ( (x>zero) ? HUGE_VAL : -HUGE_VAL); |
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510 | if (_LIB_VERSION == _POSIX_) |
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511 | errno = ERANGE; |
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512 | else if (!matherr(&exc)) { |
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513 | errno = ERANGE; |
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514 | } |
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515 | break; |
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516 | case 26: |
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517 | case 126: |
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518 | /* sqrt(x<0) */ |
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519 | exc.type = DOMAIN; |
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520 | exc.name = type < 100 ? "sqrt" : "sqrtf"; |
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521 | if (_LIB_VERSION == _SVID_) |
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522 | exc.retval = zero; |
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523 | else |
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524 | exc.retval = zero/zero; |
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525 | if (_LIB_VERSION == _POSIX_) |
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526 | errno = EDOM; |
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527 | else if (!matherr(&exc)) { |
---|
528 | /* if (_LIB_VERSION == _SVID_) { |
---|
529 | (void) WRITE2("sqrt: DOMAIN error\n", 19); |
---|
530 | } */ |
---|
531 | errno = EDOM; |
---|
532 | } |
---|
533 | break; |
---|
534 | case 27: |
---|
535 | case 127: |
---|
536 | /* fmod(x,0) */ |
---|
537 | exc.type = DOMAIN; |
---|
538 | exc.name = type < 100 ? "fmod" : "fmodf"; |
---|
539 | if (_LIB_VERSION == _SVID_) |
---|
540 | exc.retval = x; |
---|
541 | else |
---|
542 | exc.retval = zero/zero; |
---|
543 | if (_LIB_VERSION == _POSIX_) |
---|
544 | errno = EDOM; |
---|
545 | else if (!matherr(&exc)) { |
---|
546 | /* if (_LIB_VERSION == _SVID_) { |
---|
547 | (void) WRITE2("fmod: DOMAIN error\n", 20); |
---|
548 | } */ |
---|
549 | errno = EDOM; |
---|
550 | } |
---|
551 | break; |
---|
552 | case 28: |
---|
553 | case 128: |
---|
554 | /* remainder(x,0) */ |
---|
555 | exc.type = DOMAIN; |
---|
556 | exc.name = type < 100 ? "remainder" : "remainderf"; |
---|
557 | exc.retval = zero/zero; |
---|
558 | if (_LIB_VERSION == _POSIX_) |
---|
559 | errno = EDOM; |
---|
560 | else if (!matherr(&exc)) { |
---|
561 | /* if (_LIB_VERSION == _SVID_) { |
---|
562 | (void) WRITE2("remainder: DOMAIN error\n", 24); |
---|
563 | } */ |
---|
564 | errno = EDOM; |
---|
565 | } |
---|
566 | break; |
---|
567 | case 29: |
---|
568 | case 129: |
---|
569 | /* acosh(x<1) */ |
---|
570 | exc.type = DOMAIN; |
---|
571 | exc.name = type < 100 ? "acosh" : "acoshf"; |
---|
572 | exc.retval = zero/zero; |
---|
573 | if (_LIB_VERSION == _POSIX_) |
---|
574 | errno = EDOM; |
---|
575 | else if (!matherr(&exc)) { |
---|
576 | /* if (_LIB_VERSION == _SVID_) { |
---|
577 | (void) WRITE2("acosh: DOMAIN error\n", 20); |
---|
578 | } */ |
---|
579 | errno = EDOM; |
---|
580 | } |
---|
581 | break; |
---|
582 | case 30: |
---|
583 | case 130: |
---|
584 | /* atanh(|x|>1) */ |
---|
585 | exc.type = DOMAIN; |
---|
586 | exc.name = type < 100 ? "atanh" : "atanhf"; |
---|
587 | exc.retval = zero/zero; |
---|
588 | if (_LIB_VERSION == _POSIX_) |
---|
589 | errno = EDOM; |
---|
590 | else if (!matherr(&exc)) { |
---|
591 | /* if (_LIB_VERSION == _SVID_) { |
---|
592 | (void) WRITE2("atanh: DOMAIN error\n", 20); |
---|
593 | } */ |
---|
594 | errno = EDOM; |
---|
595 | } |
---|
596 | break; |
---|
597 | case 31: |
---|
598 | case 131: |
---|
599 | /* atanh(|x|=1) */ |
---|
600 | exc.type = SING; |
---|
601 | exc.name = type < 100 ? "atanh" : "atanhf"; |
---|
602 | exc.retval = x/zero; /* sign(x)*inf */ |
---|
603 | if (_LIB_VERSION == _POSIX_) |
---|
604 | errno = EDOM; |
---|
605 | else if (!matherr(&exc)) { |
---|
606 | /* if (_LIB_VERSION == _SVID_) { |
---|
607 | (void) WRITE2("atanh: SING error\n", 18); |
---|
608 | } */ |
---|
609 | errno = EDOM; |
---|
610 | } |
---|
611 | break; |
---|
612 | case 32: |
---|
613 | case 132: |
---|
614 | /* scalb overflow; SVID also returns +-HUGE_VAL */ |
---|
615 | exc.type = OVERFLOW; |
---|
616 | exc.name = type < 100 ? "scalb" : "scalbf"; |
---|
617 | exc.retval = x > zero ? HUGE_VAL : -HUGE_VAL; |
---|
618 | if (_LIB_VERSION == _POSIX_) |
---|
619 | errno = ERANGE; |
---|
620 | else if (!matherr(&exc)) { |
---|
621 | errno = ERANGE; |
---|
622 | } |
---|
623 | break; |
---|
624 | case 33: |
---|
625 | case 133: |
---|
626 | /* scalb underflow */ |
---|
627 | exc.type = UNDERFLOW; |
---|
628 | exc.name = type < 100 ? "scalb" : "scalbf"; |
---|
629 | exc.retval = copysign(zero,x); |
---|
630 | if (_LIB_VERSION == _POSIX_) |
---|
631 | errno = ERANGE; |
---|
632 | else if (!matherr(&exc)) { |
---|
633 | errno = ERANGE; |
---|
634 | } |
---|
635 | break; |
---|
636 | case 34: |
---|
637 | case 134: |
---|
638 | /* j0(|x|>X_TLOSS) */ |
---|
639 | exc.type = TLOSS; |
---|
640 | exc.name = type < 100 ? "j0" : "j0f"; |
---|
641 | exc.retval = zero; |
---|
642 | if (_LIB_VERSION == _POSIX_) |
---|
643 | errno = ERANGE; |
---|
644 | else if (!matherr(&exc)) { |
---|
645 | /* if (_LIB_VERSION == _SVID_) { |
---|
646 | (void) WRITE2(exc.name, 2); |
---|
647 | (void) WRITE2(": TLOSS error\n", 14); |
---|
648 | } */ |
---|
649 | errno = ERANGE; |
---|
650 | } |
---|
651 | break; |
---|
652 | case 35: |
---|
653 | case 135: |
---|
654 | /* y0(x>X_TLOSS) */ |
---|
655 | exc.type = TLOSS; |
---|
656 | exc.name = type < 100 ? "y0" : "y0f"; |
---|
657 | exc.retval = zero; |
---|
658 | if (_LIB_VERSION == _POSIX_) |
---|
659 | errno = ERANGE; |
---|
660 | else if (!matherr(&exc)) { |
---|
661 | /* if (_LIB_VERSION == _SVID_) { |
---|
662 | (void) WRITE2(exc.name, 2); |
---|
663 | (void) WRITE2(": TLOSS error\n", 14); |
---|
664 | } */ |
---|
665 | errno = ERANGE; |
---|
666 | } |
---|
667 | break; |
---|
668 | case 36: |
---|
669 | case 136: |
---|
670 | /* j1(|x|>X_TLOSS) */ |
---|
671 | exc.type = TLOSS; |
---|
672 | exc.name = type < 100 ? "j1" : "j1f"; |
---|
673 | exc.retval = zero; |
---|
674 | if (_LIB_VERSION == _POSIX_) |
---|
675 | errno = ERANGE; |
---|
676 | else if (!matherr(&exc)) { |
---|
677 | /* if (_LIB_VERSION == _SVID_) { |
---|
678 | (void) WRITE2(exc.name, 2); |
---|
679 | (void) WRITE2(": TLOSS error\n", 14); |
---|
680 | } */ |
---|
681 | errno = ERANGE; |
---|
682 | } |
---|
683 | break; |
---|
684 | case 37: |
---|
685 | case 137: |
---|
686 | /* y1(x>X_TLOSS) */ |
---|
687 | exc.type = TLOSS; |
---|
688 | exc.name = type < 100 ? "y1" : "y1f"; |
---|
689 | exc.retval = zero; |
---|
690 | if (_LIB_VERSION == _POSIX_) |
---|
691 | errno = ERANGE; |
---|
692 | else if (!matherr(&exc)) { |
---|
693 | /* if (_LIB_VERSION == _SVID_) { |
---|
694 | (void) WRITE2(exc.name, 2); |
---|
695 | (void) WRITE2(": TLOSS error\n", 14); |
---|
696 | } */ |
---|
697 | errno = ERANGE; |
---|
698 | } |
---|
699 | break; |
---|
700 | case 38: |
---|
701 | case 138: |
---|
702 | /* jn(|x|>X_TLOSS) */ |
---|
703 | exc.type = TLOSS; |
---|
704 | exc.name = type < 100 ? "jn" : "jnf"; |
---|
705 | exc.retval = zero; |
---|
706 | if (_LIB_VERSION == _POSIX_) |
---|
707 | errno = ERANGE; |
---|
708 | else if (!matherr(&exc)) { |
---|
709 | /* if (_LIB_VERSION == _SVID_) { |
---|
710 | (void) WRITE2(exc.name, 2); |
---|
711 | (void) WRITE2(": TLOSS error\n", 14); |
---|
712 | } */ |
---|
713 | errno = ERANGE; |
---|
714 | } |
---|
715 | break; |
---|
716 | case 39: |
---|
717 | case 139: |
---|
718 | /* yn(x>X_TLOSS) */ |
---|
719 | exc.type = TLOSS; |
---|
720 | exc.name = type < 100 ? "yn" : "ynf"; |
---|
721 | exc.retval = zero; |
---|
722 | if (_LIB_VERSION == _POSIX_) |
---|
723 | errno = ERANGE; |
---|
724 | else if (!matherr(&exc)) { |
---|
725 | /* if (_LIB_VERSION == _SVID_) { |
---|
726 | (void) WRITE2(exc.name, 2); |
---|
727 | (void) WRITE2(": TLOSS error\n", 14); |
---|
728 | } */ |
---|
729 | errno = ERANGE; |
---|
730 | } |
---|
731 | break; |
---|
732 | case 40: |
---|
733 | case 140: |
---|
734 | /* gamma(finite) overflow */ |
---|
735 | exc.type = OVERFLOW; |
---|
736 | exc.name = type < 100 ? "gamma" : "gammaf"; |
---|
737 | if (_LIB_VERSION == _SVID_) |
---|
738 | exc.retval = HUGE; |
---|
739 | else |
---|
740 | exc.retval = HUGE_VAL; |
---|
741 | if (_LIB_VERSION == _POSIX_) |
---|
742 | errno = ERANGE; |
---|
743 | else if (!matherr(&exc)) { |
---|
744 | errno = ERANGE; |
---|
745 | } |
---|
746 | break; |
---|
747 | case 41: |
---|
748 | case 141: |
---|
749 | /* gamma(-integer) or gamma(0) */ |
---|
750 | exc.type = SING; |
---|
751 | exc.name = type < 100 ? "gamma" : "gammaf"; |
---|
752 | if (_LIB_VERSION == _SVID_) |
---|
753 | exc.retval = HUGE; |
---|
754 | else |
---|
755 | exc.retval = HUGE_VAL; |
---|
756 | if (_LIB_VERSION == _POSIX_) |
---|
757 | errno = EDOM; |
---|
758 | else if (!matherr(&exc)) { |
---|
759 | /* if (_LIB_VERSION == _SVID_) { |
---|
760 | (void) WRITE2("gamma: SING error\n", 18); |
---|
761 | } */ |
---|
762 | errno = EDOM; |
---|
763 | } |
---|
764 | break; |
---|
765 | case 42: |
---|
766 | case 142: |
---|
767 | /* pow(NaN,0.0) */ |
---|
768 | /* error only if _LIB_VERSION == _SVID_ & _XOPEN_ */ |
---|
769 | exc.type = DOMAIN; |
---|
770 | exc.name = type < 100 ? "pow" : "powf"; |
---|
771 | exc.retval = x; |
---|
772 | if (_LIB_VERSION == _IEEE_ || |
---|
773 | _LIB_VERSION == _POSIX_) exc.retval = 1.0; |
---|
774 | else if (!matherr(&exc)) { |
---|
775 | errno = EDOM; |
---|
776 | } |
---|
777 | break; |
---|
778 | } |
---|
779 | if (exc.err != 0) |
---|
780 | errno = exc.err; |
---|
781 | return exc.retval; |
---|
782 | } |
---|
783 | |
---|
784 | |
---|