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4349 | Serge | 1 | /* wf_jn.c -- float version of w_jn.c. |
2 | * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. |
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3 | */ |
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4 | |||
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 | |||
16 | #include "fdlibm.h" |
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17 | #include |
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18 | |||
19 | |||
20 | #ifdef __STDC__ |
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21 | float jnf(int n, float x) /* wrapper jnf */ |
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22 | #else |
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23 | float jnf(n,x) /* wrapper jnf */ |
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24 | float x; int n; |
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25 | #endif |
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26 | { |
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27 | #ifdef _IEEE_LIBM |
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28 | return __ieee754_jnf(n,x); |
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29 | #else |
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30 | float z; |
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31 | struct exception exc; |
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32 | z = __ieee754_jnf(n,x); |
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33 | if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z; |
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34 | if(fabsf(x)>(float)X_TLOSS) { |
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35 | /* jnf(|x|>X_TLOSS) */ |
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36 | exc.type = TLOSS; |
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37 | exc.name = "jnf"; |
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38 | exc.err = 0; |
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39 | exc.arg1 = (double)n; |
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40 | exc.arg2 = (double)x; |
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41 | exc.retval = 0.0; |
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42 | if (_LIB_VERSION == _POSIX_) |
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43 | errno = ERANGE; |
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44 | else if (!matherr(&exc)) { |
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45 | errno = ERANGE; |
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46 | } |
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47 | if (exc.err != 0) |
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48 | errno = exc.err; |
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49 | return exc.retval; |
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50 | } else |
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51 | return z; |
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52 | #endif |
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53 | } |
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54 | |||
55 | #ifdef __STDC__ |
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56 | float ynf(int n, float x) /* wrapper ynf */ |
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57 | #else |
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58 | float ynf(n,x) /* wrapper ynf */ |
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59 | float x; int n; |
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60 | #endif |
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61 | { |
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62 | #ifdef _IEEE_LIBM |
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63 | return __ieee754_ynf(n,x); |
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64 | #else |
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65 | float z; |
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66 | struct exception exc; |
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67 | z = __ieee754_ynf(n,x); |
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68 | if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z; |
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69 | if(x <= (float)0.0){ |
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70 | /* ynf(n,0) = -inf or ynf(x<0) = NaN */ |
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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 | |||
75 | SET_HIGH_WORD(inf,0x7ff00000); /* set inf to infinite */ |
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76 | #endif |
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77 | exc.type = DOMAIN; /* should be SING for IEEE */ |
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78 | exc.name = "ynf"; |
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79 | exc.err = 0; |
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80 | exc.arg1 = (double)n; |
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81 | 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 | /* ynf(x>X_TLOSS) */ |
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97 | exc.type = TLOSS; |
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98 | exc.name = "ynf"; |
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99 | exc.err = 0; |
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100 | exc.arg1 = (double)n; |
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101 | exc.arg2 = (double)x; |
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102 | exc.retval = 0.0; |
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103 | if (_LIB_VERSION == _POSIX_) |
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104 | errno = ERANGE; |
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105 | else if (!matherr(&exc)) { |
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106 | errno = ERANGE; |
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107 | } |
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108 | if (exc.err != 0) |
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109 | errno = exc.err; |
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110 | return (float)exc.retval; |
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111 | } else |
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112 | return z; |
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113 | #endif |
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114 | } |
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115 | |||
116 | #ifdef _DOUBLE_IS_32BITS |
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117 | |||
118 | #ifdef __STDC__ |
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119 | double jn(int n, double x) |
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120 | #else |
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121 | double jn(n,x) |
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122 | double x; int n; |
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123 | #endif |
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124 | { |
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125 | return (double) jnf(n, (float) x); |
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126 | } |
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127 | |||
128 | #ifdef __STDC__ |
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129 | double yn(int n, double x) |
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130 | #else |
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131 | double yn(n,x) |
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132 | double x; int n; |
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133 | #endif |
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134 | { |
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135 | return (double) ynf(n, (float) x); |
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136 | } |
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137 | |||
138 | #endif /* defined(_DOUBLE_IS_32BITS) */0)>=> |