/* Copyright (C) 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Richard Henderson. 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> /* Use the chopped rounding mode conversion instructions to implement trunc. */ float __truncf (float x) { float two23 = copysignf (0x1.0p23, x); float r, tmp; __asm ( #ifdef _IEEE_FP_INEXACT "adds/suic %2, %3, %1\n\tsubs/suic %1, %3, %0" #else "adds/suc %2, %3, %1\n\tsubs/suc %1, %3, %0" #endif : "=&f"(r), "=&f"(tmp) : "f"(x), "f"(two23)); /* trunc(-0) == -0, and in general we'll always have the same sign as our input. */ return copysignf (r, x); } weak_alias (__truncf, truncf)

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