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51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
/* Copyright (C) 2011 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@gmail.com>, 2011.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <math.h>
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#include <math_private.h>
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static const double
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o_threshold= 7.09782712893383973096e+02, /* 0x40862E42, 0xFEFA39EF */
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u_threshold= -7.45133219101941108420e+02; /* 0xc0874910, 0xD52D3051 */
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/* wrapper exp */
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double
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__exp (double x)
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{
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if (__builtin_expect (x > o_threshold, 0))
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{
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if (_LIB_VERSION != _IEEE_)
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return __kernel_standard_f (x, x, 6);
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}
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else if (__builtin_expect (x < u_threshold, 0))
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{
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if (_LIB_VERSION != _IEEE_)
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return __kernel_standard_f (x, x, 7);
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}
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return __ieee754_exp (x);
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}
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hidden_def (__exp)
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weak_alias (__exp, exp)
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#ifdef NO_LONG_DOUBLE
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strong_alias (__exp, __expl)
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weak_alias (__exp, expl)
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#endif
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