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timer.h
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Created
Tue, Aug 20, 08:49
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473 B
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text/x-c
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Thu, Aug 22, 08:49 (2 d)
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blob
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20027302
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R1448 Lenstool-HPC
timer.h
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#pragma once
//
#include <sys/time.h>
extern "C"{
double myseconds()
{
struct timeval tp;
struct timezone tzp;
//
int i = gettimeofday(&tp,&tzp);
//
return ( (double) tp.tv_sec + (double) tp.tv_usec * 1.e-6 );
}
}
#ifndef __xlC__
static inline unsigned long long cycles()
{
unsigned long long u;
__asm__ volatile ("rdtscp;shlq $32,%%rdx;orq %%rdx,%%rax;movq %%rax,%0":"=q"(u)::"%rax", "%rdx", "rcx");
return u;
}
#endif
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