/* Round float value to long int. Copyright (C) 1997 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ #include <math.h> #include "math_private.h" long int __lroundf (float x) { int32_t j0; u_int32_t i; long int result; int sign; GET_FLOAT_WORD (i, x); j0 = ((i >> 23) & 0xff) - 0x7f; sign = (i & 0x80000000) != 0 ? -1 : 1; i &= 0x7fffff; i |= 0x800000; if (j0 < (int32_t) (8 * sizeof (long int)) - 1) { if (j0 < 0) return j0 < -1 ? 0 : sign; else if (j0 >= 23) result = (long int) i << (j0 - 23); else { i += 0x400000 >> j0; result = i >> (23 - j0); } } else { /* The number is too large. It is left implementation defined what happens. */ return (long int) x; } return sign * result; } weak_alias (__lroundf, lroundf)