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authorUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
committerUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
commita334319f6530564d22e775935d9c91663623a1b4 (patch)
treeb5877475619e4c938e98757d518bb1e9cbead751 /sysdeps/mips/fpu/fclrexcpt.c
parent0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (diff)
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(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.
Diffstat (limited to 'sysdeps/mips/fpu/fclrexcpt.c')
-rw-r--r--sysdeps/mips/fpu/fclrexcpt.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/sysdeps/mips/fpu/fclrexcpt.c b/sysdeps/mips/fpu/fclrexcpt.c
new file mode 100644
index 0000000000..f773312b34
--- /dev/null
+++ b/sysdeps/mips/fpu/fclrexcpt.c
@@ -0,0 +1,47 @@
+/* Clear given exceptions in current floating-point environment.
+   Copyright (C) 1998, 1999, 2000, 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Jaeger <aj@suse.de>, 1998.
+
+   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 <fenv.h>
+#include <fenv_libc.h>
+#include <fpu_control.h>
+
+int
+feclearexcept (int excepts)
+{
+  int cw;
+
+  /* Mask out unsupported bits/exceptions.  */
+  excepts &= FE_ALL_EXCEPT;
+
+  /* Read the complete control word.  */
+  _FPU_GETCW (cw);
+
+  /* Clear exception flag bits and cause bits. If the cause bit is not
+     cleared, the next CTC instruction (just below) will re-generate the
+     exception.  */
+
+  cw &= ~(excepts | (excepts << CAUSE_SHIFT));
+
+  /* Put the new data in effect.  */
+  _FPU_SETCW (cw);
+
+  /* Success.  */
+  return 0;
+}