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36 lines
576 B
C
36 lines
576 B
C
#include <math.h>
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#include <float.h>
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#include "ieee754/ieee754.h"
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int *_errno(void);
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/*
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* @unimplemented
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*/
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double _j0(double num)
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{
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if (!_finite(num)) *_errno() = EDOM;
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return __ieee754_j0(num);
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}
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/*
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* @implemented
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*/
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double _y0(double num)
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{
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double retval;
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int fpclass = _fpclass(num);
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if (!_finite(num) || fpclass == _FPCLASS_NN ||
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fpclass == _FPCLASS_ND || fpclass == _FPCLASS_NZ)
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*_errno() = EDOM;
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retval = __ieee754_y0(num);
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if (_fpclass(retval) == _FPCLASS_NINF)
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{
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*_errno() = EDOM;
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retval = sqrt(-1);
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}
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return retval;
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}
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