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46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
/* Copyright (C) 2011, 2012 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, see
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<http://www.gnu.org/licenses/>. */
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#include <math.h>
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#include <math_private.h>
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static const float
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o_threshold= 8.8722831726e+01, /* 0x42b17217 */
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u_threshold= -1.0397208405e+02; /* 0xc2cff1b5 */
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/* wrapper expf */
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float
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__expf (float x)
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{
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if (__builtin_expect (isgreater (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, 106);
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}
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else if (__builtin_expect (isless (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, 107);
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}
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return __ieee754_expf (x);
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}
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hidden_def (__expf)
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weak_alias (__expf, expf)
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