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4349 | Serge | 1 | |
2 | /* |
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3 | * ==================================================== |
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4 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
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5 | * |
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6 | * Developed at SunPro, a Sun Microsystems, Inc. business. |
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7 | * Permission to use, copy, modify, and distribute this |
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8 | * software is freely granted, provided that this notice |
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9 | * is preserved. |
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10 | * ==================================================== |
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11 | */ |
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12 | |||
13 | |||
14 | * wrapper of j1,y1 |
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15 | */ |
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16 | |||
17 | |||
18 | #include |
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19 | |||
20 | |||
21 | |||
22 | |||
23 | double j1(double x) /* wrapper j1 */ |
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24 | #else |
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25 | double j1(x) /* wrapper j1 */ |
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26 | double x; |
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27 | #endif |
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28 | { |
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29 | #ifdef _IEEE_LIBM |
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30 | return __ieee754_j1(x); |
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31 | #else |
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32 | double z; |
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33 | struct exception exc; |
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34 | z = __ieee754_j1(x); |
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35 | if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z; |
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36 | if(fabs(x)>X_TLOSS) { |
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37 | /* j1(|x|>X_TLOSS) */ |
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38 | exc.type = TLOSS; |
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39 | exc.name = "j1"; |
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40 | exc.err = 0; |
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41 | exc.arg1 = exc.arg2 = 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 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 | |||
56 | |||
57 | double y1(double x) /* wrapper y1 */ |
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58 | #else |
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59 | double y1(x) /* wrapper y1 */ |
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60 | double 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_y1(x); |
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65 | #else |
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66 | double z; |
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67 | struct exception exc; |
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68 | z = __ieee754_y1(x); |
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69 | if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z; |
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70 | if(x <= 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 | |||
75 | |||
76 | #endif |
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77 | /* y1(0) = -inf or y1(x<0) = NaN */ |
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78 | exc.type = DOMAIN; /* should be SING for IEEE */ |
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79 | exc.name = "y1"; |
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80 | exc.err = 0; |
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81 | exc.arg1 = exc.arg2 = 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 exc.retval; |
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94 | } |
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95 | if(x>X_TLOSS) { |
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96 | /* y1(x>X_TLOSS) */ |
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97 | exc.type = TLOSS; |
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98 | exc.name = "y1"; |
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99 | exc.err = 0; |
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100 | exc.arg1 = exc.arg2 = 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 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 | |||
115 | |||
116 |