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[/] [scarts/] [trunk/] [toolchain/] [scarts-newlib/] [newlib-1.17.0/] [newlib/] [libm/] [math/] [w_j1.c] - Blame information for rev 9

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1 9 jlechner 
 
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/* @(#)w_j1.c 5.1 93/09/24 */
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/*
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 * ====================================================
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 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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 *
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 * Developed at SunPro, a Sun Microsystems, Inc. business.
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 * Permission to use, copy, modify, and distribute this
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 * software is freely granted, provided that this notice
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 * is preserved.
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 * ====================================================
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 */
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/*
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 * wrapper of j1,y1
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 */
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#include "fdlibm.h"
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#include <errno.h>
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#ifndef _DOUBLE_IS_32BITS
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#ifdef __STDC__
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        double j1(double x)             /* wrapper j1 */
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#else
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        double j1(x)                    /* wrapper j1 */
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        double x;
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#endif
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{
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#ifdef _IEEE_LIBM
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        return __ieee754_j1(x);
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#else
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        double z;
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        struct exception exc;
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        z = __ieee754_j1(x);
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        if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z;
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        if(fabs(x)>X_TLOSS) {
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            /* j1(|x|>X_TLOSS) */
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            exc.type = TLOSS;
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            exc.name = "j1";
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            exc.err = 0;
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            exc.arg1 = exc.arg2 = x;
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            exc.retval = 0.0;
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            if (_LIB_VERSION == _POSIX_)
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                errno = ERANGE;
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            else if (!matherr(&exc)) {
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                errno = ERANGE;
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            }
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            if (exc.err != 0)
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               errno = exc.err;
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            return exc.retval;
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        } else
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            return z;
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#endif
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}
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#ifdef __STDC__
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        double y1(double x)             /* wrapper y1 */
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#else
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        double y1(x)                    /* wrapper y1 */
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        double x;
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#endif
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{
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#ifdef _IEEE_LIBM
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        return __ieee754_y1(x);
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#else
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        double z;
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        struct exception exc;
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        z = __ieee754_y1(x);
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        if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z;
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        if(x <= 0.0){
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#ifndef HUGE_VAL
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#define HUGE_VAL inf
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            double inf = 0.0;
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            SET_HIGH_WORD(inf,0x7ff00000);      /* set inf to infinite */
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#endif
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            /* y1(0) = -inf  or y1(x<0) = NaN */
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            exc.type = DOMAIN;  /* should be SING for IEEE */
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            exc.name = "y1";
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            exc.err = 0;
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            exc.arg1 = exc.arg2 = x;
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            if (_LIB_VERSION == _SVID_)
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               exc.retval = -HUGE;
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            else
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               exc.retval = -HUGE_VAL;
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            if (_LIB_VERSION == _POSIX_)
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               errno = EDOM;
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            else if (!matherr(&exc)) {
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               errno = EDOM;
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            }
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            if (exc.err != 0)
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               errno = exc.err;
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            return exc.retval;
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        }
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        if(x>X_TLOSS) {
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            /* y1(x>X_TLOSS) */
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            exc.type = TLOSS;
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            exc.name = "y1";
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            exc.err = 0;
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            exc.arg1 = exc.arg2 = x;
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            exc.retval = 0.0;
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            if (_LIB_VERSION == _POSIX_)
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                errno = ERANGE;
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            else if (!matherr(&exc)) {
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                errno = ERANGE;
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            }
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            if (exc.err != 0)
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               errno = exc.err;
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            return exc.retval;
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        } else
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            return z;
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#endif
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}
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#endif /* defined(_DOUBLE_IS_32BITS) */
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