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407882d23d
By supporting FMA extension, the number of instruction needed for multiply accumulate to mix channels are reduced. Since, this extension has been around since middle of 2012, more computers have this instruction set available.
63 lines
1.7 KiB
C++
63 lines
1.7 KiB
C++
/*
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* Copyright (C) 2007-2015 Paul Davis <paul@linuxaudiosystems.com>
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* Copyright (C) 2015 Robin Gareus <robin@gareus.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef __pbd_fpu_h__
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#define __pbd_fpu_h__
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#include "pbd/libpbd_visibility.h"
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namespace PBD {
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class LIBPBD_API FPU {
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private:
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enum Flags {
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HasFlushToZero = 0x1,
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HasDenormalsAreZero = 0x2,
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HasSSE = 0x4,
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HasSSE2 = 0x8,
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HasAVX = 0x10,
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HasNEON = 0x20,
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HasFMA = 0x40,
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};
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public:
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~FPU ();
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static FPU* instance();
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static void destroy();
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bool has_flush_to_zero () const { return _flags & HasFlushToZero; }
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bool has_denormals_are_zero () const { return _flags & HasDenormalsAreZero; }
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bool has_sse () const { return _flags & HasSSE; }
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bool has_sse2 () const { return _flags & HasSSE2; }
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bool has_avx () const { return _flags & HasAVX; }
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bool has_fma() const { return _flags & HasFMA; }
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bool has_neon () const { return _flags & HasNEON; }
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private:
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Flags _flags;
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static FPU* _instance;
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FPU ();
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};
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}
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#endif /* __pbd_fpu_h__ */
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