1 | /* wf_j0.c -- float version of w_j0.c. |
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2 | * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. |
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3 | */ |
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4 | |
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5 | /* |
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6 | * ==================================================== |
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7 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
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8 | * |
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9 | * Developed at SunPro, a Sun Microsystems, Inc. business. |
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10 | * Permission to use, copy, modify, and distribute this |
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11 | * software is freely granted, provided that this notice |
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12 | * is preserved. |
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13 | * ==================================================== |
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14 | */ |
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15 | |
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16 | /* |
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17 | * wrapper j0f(float x), y0f(float x) |
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18 | */ |
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19 | |
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20 | #include "fdlibm.h" |
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21 | #include <errno.h> |
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22 | |
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23 | #ifdef __STDC__ |
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24 | float j0f(float x) /* wrapper j0f */ |
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25 | #else |
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26 | float j0f(x) /* wrapper j0f */ |
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27 | float x; |
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28 | #endif |
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29 | { |
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30 | #ifdef _IEEE_LIBM |
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31 | return __ieee754_j0f(x); |
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32 | #else |
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33 | struct exception exc; |
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34 | float z = __ieee754_j0f(x); |
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35 | if(_LIB_VERSION == _IEEE_ || isnan(x)) return z; |
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36 | if(fabsf(x)>(float)X_TLOSS) { |
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37 | /* j0f(|x|>X_TLOSS) */ |
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38 | exc.type = TLOSS; |
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39 | exc.name = "j0f"; |
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40 | exc.err = 0; |
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41 | exc.arg1 = exc.arg2 = (double)x; |
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42 | exc.retval = 0.0; |
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43 | if (_LIB_VERSION == _POSIX_) |
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44 | errno = ERANGE; |
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45 | else if (!matherr(&exc)) { |
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46 | errno = ERANGE; |
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47 | } |
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48 | if (exc.err != 0) |
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49 | errno = exc.err; |
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50 | return (float)exc.retval; |
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51 | } else |
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52 | return z; |
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53 | #endif |
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54 | } |
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55 | |
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56 | #ifdef __STDC__ |
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57 | float y0f(float x) /* wrapper y0f */ |
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58 | #else |
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59 | float y0f(x) /* wrapper y0f */ |
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60 | float x; |
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61 | #endif |
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62 | { |
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63 | #ifdef _IEEE_LIBM |
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64 | return __ieee754_y0f(x); |
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65 | #else |
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66 | float z; |
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67 | struct exception exc; |
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68 | z = __ieee754_y0f(x); |
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69 | if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z; |
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70 | if(x <= (float)0.0){ |
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71 | #ifndef HUGE_VAL |
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72 | #define HUGE_VAL inf |
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73 | double inf = 0.0; |
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74 | |
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75 | SET_HIGH_WORD(inf,0x7ff00000); /* set inf to infinite */ |
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76 | #endif |
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77 | /* y0f(0) = -inf or y0f(x<0) = NaN */ |
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78 | exc.type = DOMAIN; /* should be SING for IEEE y0f(0) */ |
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79 | exc.name = "y0f"; |
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80 | exc.err = 0; |
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81 | exc.arg1 = exc.arg2 = (double)x; |
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82 | if (_LIB_VERSION == _SVID_) |
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83 | exc.retval = -HUGE; |
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84 | else |
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85 | exc.retval = -HUGE_VAL; |
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86 | if (_LIB_VERSION == _POSIX_) |
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87 | errno = EDOM; |
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88 | else if (!matherr(&exc)) { |
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89 | errno = EDOM; |
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90 | } |
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91 | if (exc.err != 0) |
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92 | errno = exc.err; |
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93 | return (float)exc.retval; |
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94 | } |
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95 | if(x>(float)X_TLOSS) { |
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96 | /* y0f(x>X_TLOSS) */ |
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97 | exc.type = TLOSS; |
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98 | exc.name = "y0f"; |
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99 | exc.err = 0; |
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100 | exc.arg1 = exc.arg2 = (double)x; |
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101 | exc.retval = 0.0; |
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102 | if (_LIB_VERSION == _POSIX_) |
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103 | errno = ERANGE; |
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104 | else if (!matherr(&exc)) { |
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105 | errno = ERANGE; |
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106 | } |
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107 | if (exc.err != 0) |
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108 | errno = exc.err; |
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109 | return (float)exc.retval; |
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110 | } else |
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111 | return z; |
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112 | #endif |
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113 | } |
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114 | |
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115 | #ifdef _DOUBLE_IS_32BITS |
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116 | |
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117 | #ifdef __STDC__ |
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118 | double j0(double x) |
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119 | #else |
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120 | double j0(x) |
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121 | double x; |
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122 | #endif |
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123 | { |
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124 | return (double) j0f((float) x); |
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125 | } |
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126 | |
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127 | #ifdef __STDC__ |
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128 | double y0(double x) |
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129 | #else |
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130 | double y0(x) |
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131 | double x; |
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132 | #endif |
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133 | { |
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134 | return (double) y0f((float) x); |
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135 | } |
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136 | |
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137 | #endif /* defined(_DOUBLE_IS_32BITS) */ |
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