C/math.h/isless
int isless(a, b): Returns nonzero if a is less than b
#include <stdio.h>
#include <math.h>
int main(void)
{
printf("%d", isless(1.0, 2.0));
printf("%d", isless(1.0, 1.0));
printf("%d", isless(2.0, 1.0));
return 0;
}
/*
100
*/