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62 lines
1.5 KiB
C
62 lines
1.5 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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#ifdef __STDC__
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static const long double
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#else
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static long double
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#endif
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o_threshold= 1.135652340629414394949193107797076489134e4,
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/* 0x400C, 0xB17217F7, 0xD1CF79AC */
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u_threshold= -1.140019167866942050398521670162263001513e4;
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/* 0x400C, 0xB220C447, 0x69C201E8 */
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#ifdef __STDC__
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long double __expl(long double x) /* wrapper exp */
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#else
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long double __expl(x) /* wrapper exp */
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long double x;
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#endif
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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(x,x,206); /* exp overflow */
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else if(x<u_threshold)
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return __kernel_standard(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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