Announcing the release of nanotime v0.1

/* 
 * nanotime 
 *
 * version 0.1
 * 
 * Copyright 2004 under the terms of the GNU General Public License (GPL)
 *
 * nanotime is a shell callable utility which reads and 
 * returns a 64 bit high resolution time stamp on cpus 
 * which support the TSC register.  Results are returned
 * as a decimal number. The TSC register begins counting
 * at CPU reset time and increments at the basic system 
 * clock rate, making this a very high speed counter.
 * 
 * example: a 2.8GHz clock on an Intel P4  results in a 
 * nanotime resolution of 0.357 nanoseconds. 
 *
 * 
 */

#include <stdio.h>

#define get_nanotime(nanotime)   __asm__ __volatile__  ( 
      "rdtscntmovl %%eax, %0ntmovl %%edx, %%eaxntmovl %%eax, 4%0n" 
      : "=m" (nanotime) :: "eax", "edx"  );


int main(int argc, char *argv[])
{
  unsigned long long tm;

  if (argc > 1) {
    printf("Usage:t %snnanotime v0.1 nCopyright 2004 GPLn",argv[0]);
    return 0;
  }

  get_nanotime(tm);

  printf("%Lun",tm);
  return 0;
}