/* * (c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands. * See the copyright notice in the ACK home directory, in the file "Copyright". * * Author: Ceriel J.H. Jacobs */ /* $Id$ */ #include double floor(double x) { double val; return modf(x, &val) < 0 ? val - 1.0 : val; /* this also works if modf always returns a positive fractional part */ }