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If x = 2.33, then int(x) will be the integer 2 (and not 2.00). I'm not sure the direction of int(-2.33), but either
int(-2.33) or int( int(-2.33) - 1) is floor(-2.33).
Mod 13 for positive x is int(x - 13*int(x/13.0))
Steven Bellenot http://www.math.fsu.edu/~bellenot Professor and Associate Chair phone: (850) 644-7405 Department of Mathematics office: 223 Love Florida State University email: bellenot at