/* minmax.c - finds min, max, suggested sub and div for a set of
              binary single precision floating point numbers */
 
#include
 
main()
{
int     In;
union {
       unsigned long    image;
       float            x;
      } both;
unsigned long   in0, in1, in2, in3;
unsigned char   c, j = 0;
float           sub, div;
float           min = 10e37;
float           max = 10e-40; 
while ((In = getchar()) != EOF)
        {
        in0 = In; in1 = getchar(); in2 = getchar(); in3 = getchar();
        in0 <<= 24; in1 <<= 16; in2 <<= 8;
        both.image = (in0 | in1 | in2 | in3);
        both.image &= 0x7fffffff;
        if (max < both.x) {max = both.x;}
        if (min > both.x) {min = both.x;}
        }
sub = min;
div = (max - min)/256;
printf("%s %e %s %e %s %e %s %e\n"," max =",max," min =",min,
                                  " sub =",sub," div =",div);
}