/* Set current rounding direction. 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 Library General Public License as published by the Free Software Foundation; either version 2 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include <fenv_libc.h> int fesetround (int round) { fenv_union_t u; if ((unsigned int) round > 3) return 0; /* Get the current state. */ u.fenv = fegetenv_register (); /* Set the relevant bits. */ u.l[1] = u.l[1] & ~3 | round & 3; /* Put the new state in effect. */ fesetenv_register (u.fenv); return 1; }