File: MakeTable.cxx

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// A simple program that builds a sqrt table
#include <stdio.h>
#include <math.h>

int main (int argc, char *argv[])
{
  int i;
  double result;

  // make sure we have enough arguments
  if (argc < 2)
    {
    return 1;
    }

  // open the output file
  FILE *fout = fopen(argv[1],"w");
  if (!fout)
    {
    return 1;
    }

  // create a source file with a table of square roots
  fprintf(fout,"double sqrtTable[] = {\n");
  for (i = 0; i < 10; ++i)
    {
    result = sqrt(static_cast<double>(i));
    fprintf(fout,"%g,\n",result);
    }

  // close the table with a zero
  fprintf(fout,"0};\n");
  fclose(fout);
  return 0;
}