#include <stdio.h>

typedef double (*PFDouble0)();
static unsigned char code[1024];

int main()
{
  double ret;
  PFDouble0 pfPI;
  int inst=0;
  pfPI = (PFDouble0)code;

  code[inst++] = 0x55; // push bp

  code[inst++] = 0x89; // mov bp, sp
  code[inst++] = 0xe5; //

  code[inst++] = 0xd9; // fldpi
  code[inst++] = 0xeb; //

  code[inst++] = 0x5d; // pop bp

  code[inst++] = 0xcb; // retf

  ret = pfPI();
  printf( "PI=%g\n", ret );

  return 0;
}