1 files changed, 42 insertions, 0 deletions
diff --git a/ports/sysdeps/alpha/fpu/fesetround.c b/ports/sysdeps/alpha/fpu/fesetround.c
new file mode 100644
index 0000000000..86378d4ca9
--- /dev/null
+++ b/ports/sysdeps/alpha/fpu/fesetround.c
@@ -0,0 +1,42 @@
+/* Set current rounding direction.
+   Copyright (C) 1997, 2000, 2005 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
+fesetround (int round)
+{
+  unsigned long fpcr;
+
+  if (round & ~3)
+    return 1;
+
+  /* Get the current state.  */
+  __asm__ __volatile__("excb; mf_fpcr %0" : "=f"(fpcr));
+
+  /* Set the relevant bits.  */
+  fpcr = ((fpcr & ~FPCR_ROUND_MASK)
+	  | ((unsigned long)round << FPCR_ROUND_SHIFT));
+
+  /* Put the new state in effect.  */
+  __asm__ __volatile__("mt_fpcr %0; excb" : : "f"(fpcr));
+
+  return 0;
+}
+libm_hidden_def (fesetround)