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/* wf_jn.c -- float version of w_jn.c.
* Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
*/
/*
* ====================================================
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
*
* Developed at SunPro, a Sun Microsystems, Inc. business.
* Permission to use, copy, modify, and distribute this
* software is freely granted, provided that this notice
* is preserved.
* ====================================================
*/
#include "fdlibm.h"
#include <errno.h>
#ifdef __STDC__
float jnf(int n, float x) /* wrapper jnf */
#else
float jnf(n,x) /* wrapper jnf */
float x; int n;
#endif
{
#ifdef _IEEE_LIBM
return __ieee754_jnf(n,x);
#else
float z;
struct exception exc;
z = __ieee754_jnf(n,x);
if(_LIB_VERSION == _IEEE_ || isnanf(x) ) return z;
if(fabsf(x)>(float)X_TLOSS) {
/* jnf(|x|>X_TLOSS) */
exc.type = TLOSS;
exc.name = "jnf";
exc.err = 0;
exc.arg1 = (double)n;
exc.arg2 = (double)x;
exc.retval = 0.0;
if (_LIB_VERSION == _POSIX_)
errno = ERANGE;
else if (!matherr(&exc)) {
errno = ERANGE;
}
if (exc.err != 0)
errno = exc.err;
return exc.retval;
} else
return z;
#endif
}
#ifdef __STDC__
float ynf(int n, float x) /* wrapper ynf */
#else
float ynf(n,x) /* wrapper ynf */
float x; int n;
#endif
{
#ifdef _IEEE_LIBM
return __ieee754_ynf(n,x);
#else
float z;
struct exception exc;
z = __ieee754_ynf(n,x);
if(_LIB_VERSION == _IEEE_ || isnanf(x) ) return z;
if(x <= (float)0.0){
/* ynf(n,0) = -inf or ynf(x<0) = NaN */
#ifndef HUGE_VAL
#define HUGE_VAL inf
double inf = 0.0;
SET_HIGH_WORD(inf,0x7ff00000); /* set inf to infinite */
#endif
exc.type = DOMAIN; /* should be SING for IEEE */
exc.name = "ynf";
exc.err = 0;
exc.arg1 = (double)n;
exc.arg2 = (double)x;
if (_LIB_VERSION == _SVID_)
exc.retval = -HUGE;
else
exc.retval = -HUGE_VAL;
if (_LIB_VERSION == _POSIX_)
errno = EDOM;
else if (!matherr(&exc)) {
errno = EDOM;
}
if (exc.err != 0)
errno = exc.err;
return (float)exc.retval;
}
if(x>(float)X_TLOSS) {
/* ynf(x>X_TLOSS) */
exc.type = TLOSS;
exc.name = "ynf";
exc.err = 0;
exc.arg1 = (double)n;
exc.arg2 = (double)x;
exc.retval = 0.0;
if (_LIB_VERSION == _POSIX_)
errno = ERANGE;
else if (!matherr(&exc)) {
errno = ERANGE;
}
if (exc.err != 0)
errno = exc.err;
return (float)exc.retval;
} else
return z;
#endif
}
#ifdef _DOUBLE_IS_32BITS
#ifdef __STDC__
double jn(int n, double x)
#else
double jn(n,x)
double x; int n;
#endif
{
return (double) jnf(n, (float) x);
}
#ifdef __STDC__
double yn(int n, double x)
#else
double yn(n,x)
double x; int n;
#endif
{
return (double) ynf(n, (float) x);
}
#endif /* defined(_DOUBLE_IS_32BITS) */
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