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51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
/* w_expl.c -- long double version of w_exp.c.
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* Conversion to long double by Ulrich Drepper,
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* Cygnus Support, drepper@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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#if defined(LIBM_SCCS) && !defined(lint)
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static char rcsid[] = "$NetBSD: $";
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#endif
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/*
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* wrapper expl(x)
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*/
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#include <math.h>
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#include <math_private.h>
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static const long double
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o_threshold= 1.1356523406294143949491931077970763428449E4L,
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u_threshold= -1.1433462743336297878837243843452621503410E4;
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long double __expl(long double x) /* wrapper exp */
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{
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#ifdef _IEEE_LIBM
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return __ieee754_expl(x);
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#else
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long double z;
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z = __ieee754_expl(x);
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if(_LIB_VERSION == _IEEE_) return z;
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if(__finitel(x)) {
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if(x>o_threshold)
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return __kernel_standard_l(x,x,206); /* exp overflow */
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else if(x<u_threshold)
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return __kernel_standard_l(x,x,207); /* exp underflow */
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}
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return z;
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#endif
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}
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hidden_def (__expl)
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weak_alias (__expl, expl)
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