/* Truncate argument to nearest integral value not larger than the argument. Copyright (C) 1997-2016 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper , 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, see . */ #include #include float __truncf (float x) { int32_t i0, j0; int sx; GET_FLOAT_WORD (i0, x); sx = i0 & 0x80000000; j0 = ((i0 >> 23) & 0xff) - 0x7f; if (j0 < 23) { if (j0 < 0) /* The magnitude of the number is < 1 so the result is +-0. */ SET_FLOAT_WORD (x, sx); else SET_FLOAT_WORD (x, sx | (i0 & ~(0x007fffff >> j0))); } else { if (j0 == 0x80) /* x is inf or NaN. */ return x + x; } return x; } weak_alias (__truncf, truncf)