libfftss/fftss_get

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This source file includes following definitions.
fftss_get_wtime
fftss_get_wtime
/*
 * Copyright (C) 2002-2007 Akira Nukada. All rights reserved.
 * Copyright (C) 2002-2007 The SSI Project. All rights reserved. 
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the project nor the names of its contributors 
 *       may be used to endorse or promote products derived from this software 
 *       without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE SSI PROJECT ``AS IS'' AND ANY EXPRESS 
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE SSI PROJECT BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 *  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 *
 */
#include <stdio.h>
#include "libfftss.h"

#ifdef _WIN32
#include <windows.h>
#include <mmsystem.h>
#pragma comment(lib, "winmm.lib")

static LARGE_INTEGER t = {0, 0};

double fftss_get_wtime(void)
{
  LARGE_INTEGER l;
  if (t.QuadPart == 0)
    QueryPerformanceFrequency(&t);
  QueryPerformanceCounter(&l);
  return (double)l.QuadPart / (double)t.QuadPart;
}

#else
#include <sys/time.h>

double fftss_get_wtime(void)
{
  struct timeval tv;

  gettimeofday(&tv, NULL);
  return (double)tv.tv_sec + (double)tv.tv_usec * 0.000001;
}

#endif
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root/libfftss/fftss_get_wtime.c

DEFINITIONS
