4d3c7b50de
At least as I read the GCC documentation, if GCC supports a builtin floorl() at all, it will always treat floorl() and __builtin_floorl() the same (it's reserved in C90 and defined in C99, so nobody should ever write C code assuming floorl() won't be treated in that afshion). In addition, the GCC 3.3.6 manual says nothing about __builtin_floorl(), so it probably won't help to use it. If it appears to help, there's probably something else going on. Also, GCC appears not to like "#ifdef (__GNUC__)", as the parentheses mean it's testing an expression, not a macro name. Change-Id: Ib88b52c366d7f3b1637bb408fb18d04b67c27e4b Reviewed-on: https://code.wireshark.org/review/5909 Reviewed-by: Guy Harris <guy@alum.mit.edu>
39 lines
1.1 KiB
C
39 lines
1.1 KiB
C
/* floorl.c
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*
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* Provides floorl function for systems that do not provide it
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <math.h>
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#include "wsutil/floorl.h"
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#ifndef HAVE_FLOORL
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long double
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floorl(long double x)
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{
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/* Not perfect, but probably the best workaround available */
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return floor((double)x);
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}
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#endif /* !HAVE_FLOORL */
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