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31 lines
461 B
C
31 lines
461 B
C
#include <math.h>
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typedef int fpclass_t;
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fpclass_t _fpclass(double __d);
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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 _jn(int n, double num)
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{
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/* FIXME: errno handling */
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return jn(n, num);
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}
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/*
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* @implemented
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*/
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double _yn(int order, double num)
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{
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double retval;
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if (!isfinite(num)) *_errno() = EDOM;
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retval = yn(order,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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