/* * Copyright (c) 1993 George V. Neville-Neil * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright *    notice, this list of conditions and the following disclaimer. * 2. 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. * 3. All advertising materials mentioning features or use of this software *    must display the following acknowledgement: *	This product includes software developed by George V. Neville-Neil * 4. The name, George Neville-Neil may not be used to endorse or promote  *    products derived from this software without specific prior  *    written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. */ #ifndef _TIMING_H_#define _TIMING_H_ #ifdef TIME_WITH_SYS_TIME#include <sys/time.h>#include <time.h>#else /* !TIME_WITH_SYS_TIME */#ifdef HAVE_SYS_TIME_H#include <sys/time.h>#else /* !HAVE_SYS_TIME_H */#include <time.h>#endif /* !HAVE_SYS_TIME_H */#endif /* !TIME_WITH_SYS_TIME */ static struct timeval aftertp, beforetp; #define BEGINTIMING gettimeofday(&beforetp, NULL) #define ENDTIMING gettimeofday(&aftertp, NULL); \    if(beforetp.tv_usec > aftertp.tv_usec) \    {  \         aftertp.tv_usec += 1000000;  \         aftertp.tv_sec--; \    } #define TIMINGUS (((aftertp.tv_sec - beforetp.tv_sec) * 1000000) + \		  (aftertp.tv_usec - beforetp.tv_usec)) #define TIMINGMS (((aftertp.tv_sec - beforetp.tv_sec) * 1000) + \		  ((aftertp.tv_usec - beforetp.tv_usec) / 1000)) #define TIMINGS  ((aftertp.tv_sec - beforetp.tv_sec) + \		  (aftertp.tv_usec - beforetp.tv_usec) / 1000000) #endif /* _TIMING_H_ */