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Diffstat (limited to 'ports/sysdeps/alpha/fpu/fegetround.c')
-rw-r--r--ports/sysdeps/alpha/fpu/fegetround.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/ports/sysdeps/alpha/fpu/fegetround.c b/ports/sysdeps/alpha/fpu/fegetround.c
new file mode 100644
index 0000000000..869d8306b3
--- /dev/null
+++ b/ports/sysdeps/alpha/fpu/fegetround.c
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+/* Return current rounding direction.
+ Copyright (C) 1997, 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Richard Henderson <rth@tamu.edu>, 1997
+
+ 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_libc.h>
+
+int
+fegetround (void)
+{
+ unsigned long fpcr;
+
+ __asm__ __volatile__("excb; mf_fpcr %0" : "=f"(fpcr));
+
+ return (fpcr >> FPCR_ROUND_SHIFT) & 3;
+}