/* Emulation for ceill. Contributed by Paolo Bonzini Copyright 2002, 2003, 2007 Free Software Foundation, Inc. This file is part of gnulib. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #include /* Specification. */ #include #include /* To compute the integer part of X, sum a big enough integer so that the precision of the floating point number is exactly 1. */ long double ceill(long double x) { long double y; if (x < 0.0L) y = -(1.0L / LDBL_EPSILON - x - 1.0 / LDBL_EPSILON); else y = 1.0L / LDBL_EPSILON + x - 1.0 / LDBL_EPSILON; if (y < x) return y + 1.0L; else return y; }