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+/* Test exception in current environment.
+ Copyright (C) 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ 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
+fetestexcept (int excepts)
+{
+ fenv_union_t u;
+ int flags;
+
+ /* Get the current state. */
+ u.fenv = fegetenv_register ();
+
+ /* Find the bits that indicate exceptions have occurred. */
+ flags = u.l[1] & FPSCR_STICKY_BITS;
+
+ /* Set the FE_INVALID bit if any of the FE_INVALID_* bits are set. */
+ flags |= ((u.l[1] & FE_ALL_INVALID) != 0) << 31-24;
+
+ return flags & excepts;
+}