1 | |
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2 | /* @(#)w_j1.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 | * wrapper of j1,y1 |
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16 | */ |
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17 | |
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18 | #include "fdlibm.h" |
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19 | #include <errno.h> |
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20 | |
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21 | #ifndef _DOUBLE_IS_32BITS |
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22 | |
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23 | #ifdef __STDC__ |
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24 | double j1(double x) /* wrapper j1 */ |
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25 | #else |
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26 | double j1(x) /* wrapper j1 */ |
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27 | double 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_j1(x); |
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32 | #else |
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33 | double z; |
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34 | struct exception exc; |
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35 | z = __ieee754_j1(x); |
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36 | if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z; |
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37 | if(fabs(x)>X_TLOSS) { |
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38 | /* j1(|x|>X_TLOSS) */ |
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39 | exc.type = TLOSS; |
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40 | exc.name = "j1"; |
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41 | exc.err = 0; |
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42 | exc.arg1 = exc.arg2 = x; |
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43 | exc.retval = 0.0; |
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44 | if (_LIB_VERSION == _POSIX_) |
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45 | errno = ERANGE; |
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46 | else if (!matherr(&exc)) { |
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47 | errno = ERANGE; |
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48 | } |
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49 | if (exc.err != 0) |
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50 | errno = exc.err; |
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51 | return exc.retval; |
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52 | } else |
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53 | return z; |
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54 | #endif |
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55 | } |
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56 | |
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57 | #ifdef __STDC__ |
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58 | double y1(double x) /* wrapper y1 */ |
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59 | #else |
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60 | double y1(x) /* wrapper y1 */ |
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61 | double x; |
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62 | #endif |
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63 | { |
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64 | #ifdef _IEEE_LIBM |
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65 | return __ieee754_y1(x); |
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66 | #else |
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67 | double z; |
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68 | struct exception exc; |
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69 | z = __ieee754_y1(x); |
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70 | if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z; |
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71 | if(x <= 0.0){ |
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72 | #ifndef HUGE_VAL |
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73 | #define HUGE_VAL inf |
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74 | double inf = 0.0; |
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75 | |
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76 | SET_HIGH_WORD(inf,0x7ff00000); /* set inf to infinite */ |
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77 | #endif |
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78 | /* y1(0) = -inf or y1(x<0) = NaN */ |
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79 | exc.type = DOMAIN; /* should be SING for IEEE */ |
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80 | exc.name = "y1"; |
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81 | exc.err = 0; |
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82 | exc.arg1 = exc.arg2 = x; |
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83 | if (_LIB_VERSION == _SVID_) |
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84 | exc.retval = -HUGE; |
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85 | else |
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86 | exc.retval = -HUGE_VAL; |
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87 | if (_LIB_VERSION == _POSIX_) |
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88 | errno = EDOM; |
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89 | else if (!matherr(&exc)) { |
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90 | errno = EDOM; |
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91 | } |
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92 | if (exc.err != 0) |
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93 | errno = exc.err; |
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94 | return exc.retval; |
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95 | } |
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96 | if(x>X_TLOSS) { |
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97 | /* y1(x>X_TLOSS) */ |
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98 | exc.type = TLOSS; |
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99 | exc.name = "y1"; |
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100 | exc.err = 0; |
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101 | exc.arg1 = exc.arg2 = 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 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 | |
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116 | #endif /* defined(_DOUBLE_IS_32BITS) */ |
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117 | |
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118 | |
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119 | |
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120 | |
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121 | |
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