about summary refs log tree commit diff
path: root/sysdeps/hppa/fpu/fclrexcpt.c
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/hppa/fpu/fclrexcpt.c')
-rw-r--r--sysdeps/hppa/fpu/fclrexcpt.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/sysdeps/hppa/fpu/fclrexcpt.c b/sysdeps/hppa/fpu/fclrexcpt.c
new file mode 100644
index 0000000000..ee097b4522
--- /dev/null
+++ b/sysdeps/hppa/fpu/fclrexcpt.c
@@ -0,0 +1,36 @@
+/* Clear given exceptions in current floating-point environment.
+   Copyright (C) 2000-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by David Huggins-Daines <dhd@debian.org>, 2000
+
+   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
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+
+int
+feclearexcept (int excepts)
+{
+  union { unsigned long long l; unsigned int sw[2]; } s;
+
+  /* Get the current status word. */
+  __asm__ ("fstd %%fr0,0(%1)" : "=m" (s.l) : "r" (&s.l) : "%r0");
+  /* Clear all the relevant bits. */
+  s.sw[0] &= ~((excepts & FE_ALL_EXCEPT) << 27);
+  __asm__ ("fldd 0(%0),%%fr0" : : "r" (&s.l), "m" (s.l) : "%r0");
+
+  /* Success.  */
+  return 0;
+}
+libm_hidden_def (feclearexcept)