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42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
/* Wrapper for __scalbln handles setting errno.
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Copyright (C) 2014-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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 <errno.h>
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#include <math.h>
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#include <math_private.h>
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FLOAT
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M_DECL_FUNC (__w_scalbln) (FLOAT x, long int n)
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{
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if (!isfinite (x) || x == 0)
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return x + x;
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x = M_SUF (__scalbln) (x, n);
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if (!isfinite (x) || x == 0)
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__set_errno (ERANGE);
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return x;
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}
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/* Define strong_alias to nothing because we don't want
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declare_mgen_alias to create a strong alias for scalblnl. */
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#undef strong_alias
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#define strong_alias(name, alias_name)
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declare_mgen_alias (__w_scalbln, scalbln)
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