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[/] [or1k/] [trunk/] [newlib/] [newlib/] [libm/] [math/] [wf_acosh.c] - Blame information for rev 57

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Line No. Rev Author Line
1 39 lampret
/* wf_acosh.c -- float version of w_acosh.c.
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 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
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 */
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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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/*
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 * wrapper acoshf(x)
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 */
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#include "fdlibm.h"
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#include <errno.h>
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#ifdef __STDC__
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        float acoshf(float x)           /* wrapper acoshf */
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#else
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        float acoshf(x)                 /* wrapper acoshf */
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        float x;
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#endif
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{
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#ifdef _IEEE_LIBM
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        return __ieee754_acoshf(x);
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#else
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        float z;
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        struct exception exc;
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        z = __ieee754_acoshf(x);
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        if(_LIB_VERSION == _IEEE_ || isnanf(x)) return z;
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        if(x<(float)1.0) {
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            /* acoshf(x<1) */
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            exc.type = DOMAIN;
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            exc.name = "acoshf";
42 56 joel
            exc.err = 0;
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            exc.arg1 = exc.arg2 = (double)x;
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            exc.retval = 0.0/0.0;
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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 (float)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 _DOUBLE_IS_32BITS
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#ifdef __STDC__
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        double acosh(double x)
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#else
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        double acosh(x)
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        double x;
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#endif
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{
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        return (double) acoshf((float) x);
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}
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#endif /* defined(_DOUBLE_IS_32BITS) */

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