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authorMarcus Shawcroft <marcus.shawcroft@linaro.org>2012-11-09 17:53:51 +0000
committerMarcus Shawcroft <marcus.shawcroft@linaro.org>2012-11-09 17:54:04 +0000
commit554066b83b1a0d14e6e7a24a45ef3f65342aae76 (patch)
tree5425871b9ce8abc1ae10dbc711b2b287b139e40a /ports/sysdeps/aarch64/fpu/fesetround.c
parent2c1adbcb765ae5ce9114970324590bbb735c5051 (diff)
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AArch64 Port
Diffstat (limited to 'ports/sysdeps/aarch64/fpu/fesetround.c')
-rw-r--r--ports/sysdeps/aarch64/fpu/fesetround.c46
1 files changed, 46 insertions, 0 deletions
diff --git a/ports/sysdeps/aarch64/fpu/fesetround.c b/ports/sysdeps/aarch64/fpu/fesetround.c
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+++ b/ports/sysdeps/aarch64/fpu/fesetround.c
@@ -0,0 +1,46 @@
+/* Copyright (C) 1997-2012 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 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>
+#include <fpu_control.h>
+
+int
+fesetround (int round)
+{
+  fpu_control_t fpcr;
+
+  switch (round)
+    {
+    case FE_TONEAREST:
+    case FE_UPWARD:
+    case FE_DOWNWARD:
+    case FE_TOWARDZERO:
+      _FPU_GETCW (fpcr);
+      fpcr = (fpcr & ~FE_TOWARDZERO) | round;
+
+      _FPU_SETCW (fpcr);
+      return 0;
+
+    default:
+      return 1;
+    }
+
+  return 1;
+}
+
+libm_hidden_def (fesetround)