67 lines
1.6 KiB
C
67 lines
1.6 KiB
C
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// Copyright (c) 2010-2011 GeometryFactory Sarl (France)
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//
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// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 3 of the License,
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// or (at your option) any later version.
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//
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// Licensees holding a valid commercial license may use this file in
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// accordance with the commercial license agreement provided with the software.
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//
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// $URL$
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// $Id$
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// SPDX-License-Identifier: LGPL-3.0+
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//
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//
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// Author(s) : Laurent Rineau
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// The main goal of FPU.h is to define functions or macros to modify the
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// control word of the FPU, to:
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// - set the precision to 53 bits of mantissa,
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// - get/set the rounding mode.
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//
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// The goal of FPU_extension.h is to define inline functions similar to
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// feclearexcept and fetestexcept of C99.
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//
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// For the moment, only i386 and x64 processors are supported, with MSVC,
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// gcc, or the Intel compiler suite. Otherwise, the non-inline functions of
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// C99 are used.
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#ifndef CGAL_FPU_EXTENSION_H
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#define CGAL_FPU_EXTENSION_H
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#if __i386__ && !defined __PGI && !defined __SUNPRO_CC
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# ifdef CGAL_SAFE_SSE2
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# include <CGAL/FPU_gcc_i386_sse2.h>
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# else
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# include <CGAL/FPU_gcc_i386.h>
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# endif
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#elif defined _MSC_VER
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# include <CGAL/FPU_msvc.h>
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#else
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// generic functions, using C99
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extern "C" {
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# include <fenv.h>
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}
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namespace CGAL {
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inline int
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feclearexcept(int exceptions) {
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return ::feclearexcept(exceptions);
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}
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inline int
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fetestexcept(int exceptions) {
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return ::fetestexcept(exceptions);
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}
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} // end namespace CGAL
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#endif // use fenv
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#endif // CGAL_FPU_EXTENSION_H
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