mirror of git://sourceware.org/git/glibc.git
45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
/*
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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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#include <math.h>
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#include <math_private.h>
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#include <math_ldbl_opt.h>
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/*
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* wrapper expl(x)
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*/
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static const long double
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o_threshold = 709.78271289338399678773454114191496482L,
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u_threshold = -744.44007192138126231410729844608163411L;
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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_)
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return z;
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if (__finitel(x))
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{
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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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long_double_symbol (libm, __expl, expl);
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