70 lines
1.1 KiB
C
70 lines
1.1 KiB
C
/*! @file superlu_timer.c
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* \brief Returns the time used
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*
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* <pre>
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* Purpose
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* =======
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*
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* Returns the time in seconds used by the process.
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*
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* Note: the timer function call is machine dependent. Use conditional
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* compilation to choose the appropriate function.
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* </pre>
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*/
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#ifdef SUN
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/*
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* It uses the system call gethrtime(3C), which is accurate to
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* nanoseconds.
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*/
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#include <sys/time.h>
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double SuperLU_timer_() {
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return ( (double)gethrtime() / 1e9 );
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}
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#elif _WIN32
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#include <time.h>
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double SuperLU_timer_()
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{
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clock_t t;
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t=clock();
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return ((double)t)/CLOCKS_PER_SEC;
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}
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#else
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#ifndef NO_TIMER
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#include <sys/types.h>
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#include <sys/times.h>
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#include <time.h>
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#include <sys/time.h>
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#endif
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#ifndef CLK_TCK
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#define CLK_TCK 60
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#endif
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/*! \brief Timer function
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*/
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double SuperLU_timer_()
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{
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#ifdef NO_TIMER
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/* no sys/times.h on WIN32 */
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double tmp;
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tmp = 0.0;
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#else
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struct tms use;
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double tmp;
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times(&use);
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tmp = use.tms_utime;
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tmp += use.tms_stime;
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#endif
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return (double)(tmp) / CLK_TCK;
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}
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#endif
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