1 files changed, 150 insertions, 0 deletions
diff --git a/demos/spectrum/3rdparty/fftreal/stopwatch/ClockCycleCounter.hpp b/demos/spectrum/3rdparty/fftreal/stopwatch/ClockCycleCounter.hpp
new file mode 100644
index 0000000..fbd511e
--- /dev/null
+++ b/demos/spectrum/3rdparty/fftreal/stopwatch/ClockCycleCounter.hpp
@@ -0,0 +1,150 @@
+/*****************************************************************************
+
+        ClockCycleCounter.hpp
+        Copyright (c) 2003 Laurent de Soras
+
+Please complete the definitions according to your compiler/architecture.
+It's not a big deal if it's not possible to get the clock count...
+
+--- Legal stuff ---
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+*Tab=3***********************************************************************/
+
+
+
+#if defined (stopwatch_ClockCycleCounter_CURRENT_CODEHEADER)
+	#error Recursive inclusion of ClockCycleCounter code header.
+#endif
+#define	stopwatch_ClockCycleCounter_CURRENT_CODEHEADER
+
+#if ! defined (stopwatch_ClockCycleCounter_CODEHEADER_INCLUDED)
+#define	stopwatch_ClockCycleCounter_CODEHEADER_INCLUDED
+
+
+
+/*\\\ INCLUDE FILES \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
+
+#include	"fnc.h"
+
+#include	<climits>
+
+
+
+namespace stopwatch
+{
+
+
+
+/*\\\ PUBLIC \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
+
+
+
+/*
+==============================================================================
+Name: start
+Description:
+	Starts the counter.
+Throws: Nothing
+==============================================================================
+*/
+
+void	ClockCycleCounter::start ()
+{
+	_best_score = (static_cast <Int64> (1) << (sizeof (Int64) * CHAR_BIT - 2));
+	const Int64		start_clock = read_clock_counter ();
+	_start_time = start_clock;
+	_state = start_clock - _best_score;
+}
+
+
+
+/*
+==============================================================================
+Name: stop_lap
+Description:
+	Captures the current time and updates the smallest duration between two
+	consecutive calls to stop_lap() or the latest start().
+	start() must have been called at least once before calling this function.
+Throws: Nothing
+==============================================================================
+*/
+
+void	ClockCycleCounter::stop_lap ()
+{
+	const Int64		end_clock = read_clock_counter ();
+	_best_score = min (end_clock - _state, _best_score);
+	_state = end_clock;
+}
+
+
+
+/*\\\ PROTECTED \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
+
+
+
+/*\\\ PRIVATE \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
+
+
+
+Int64	ClockCycleCounter::read_clock_counter ()
+{
+	register Int64		clock_cnt;
+
+#if defined (_MSC_VER)
+
+	__asm
+	{
+		lea				edi, clock_cnt
+		rdtsc
+		mov				[edi    ], eax
+		mov				[edi + 4], edx
+	}
+
+#elif defined (__GNUC__) && defined (__i386__)
+
+	__asm__ __volatile__ ("rdtsc" : "=A" (clock_cnt));
+
+#elif (__MWERKS__) && defined (__POWERPC__) 
+	
+	asm
+	{
+	loop:
+		mftbu			clock_cnt@hiword
+		mftb			clock_cnt@loword
+		mftbu			r5
+		cmpw			clock_cnt@hiword,r5
+		bne loop
+	}
+	
+#endif
+
+	return (clock_cnt);
+}
+
+
+
+}	// namespace stopwatch
+
+
+
+#endif	// stopwatch_ClockCycleCounter_CODEHEADER_INCLUDED
+
+#undef stopwatch_ClockCycleCounter_CURRENT_CODEHEADER
+
+
+
+/*\\\ EOF \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/