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-rw-r--r--libm/nds32/fesetround.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/libm/nds32/fesetround.c b/libm/nds32/fesetround.c
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+++ b/libm/nds32/fesetround.c
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+/*
+ * Copyright (C) 2016-2017 Andes Technology, Inc.
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+/* Set current rounding direction.
+ Copyright (C) 2004-2013 Free Software Foundation, Inc.
+
+ 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)
+{
+#ifdef __NDS32_ABI_2FP_PLUS__
+ fpu_control_t temp;
+ if ((round & ~0x3) != 0)
+ /* ROUND is no valid rounding mode. */
+ return 1;
+
+ _FPU_GETCW (temp);
+ temp = (temp & ~0x3) | round;
+ _FPU_SETCW (temp);
+ return 0;
+#else
+ return (round != FE_TONEAREST);
+#endif
+}