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#include <stdio.h>

#include <math.h>

#include <stdlib.h>

float no1,no2,no3,no4,no5,no6,no7;

float result,resultd,resultld;

float *float_memory;

long double ldx = 88888888888888888888.88, ldy = 9999999999999999999.99;

double x = 100.345, y = 25.7789;

/* marks FPU stack as empty */

void empty_fpu_stack()

{

  asm ("ffree %st(1) \n\t"

       "ffree %st(2) \n\t"

       "ffree %st(3) \n\t"

       "ffree %st(4) \n\t"

       "ffree %st(5) \n\t"

       "ffree %st(6) \n\t"

       "ffree %st(7)");

}

/* initialization of floats */

void init_floats()

{

  no1 = 10.45;

  no2 = 20.77;

  no3 = 156.89874646;

  no4 = 14.56;

  no5 = 11.11;

  no6 = 66.77;

  no7 = 88.88;

  float_memory = malloc(sizeof(float) * 4);

  *float_memory = 256.256;

  *(float_memory + 1) = 356.356;

  *(float_memory + 2) = 456.456;

  *(float_memory + 3) = 556.556;

}

int main()

{

  init_floats();

  empty_fpu_stack();    /* BEGIN I387-FLOAT-REVERSE */

  asm("nop");   /* TEST ENV */

  asm ("fsave %0" : "=m"(*float_memory) : );

  asm ("frstor %0" : : "m"(*float_memory));

  asm ("fstsw %ax");     /* test eax register */

  asm ("fld1");

  asm ("fldl2t");

  asm ("fldl2e");

  asm ("fldpi");

  asm ("fldlg2");

  asm ("fldln2");

  asm ("fldz");

  asm ("nop");

  return 1;             /* END I387-FLOAT-REVERSE */

}