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-rw-r--r--libm/m68k/fesetround.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/libm/m68k/fesetround.c b/libm/m68k/fesetround.c
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+++ b/libm/m68k/fesetround.c
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+/* Set current rounding direction.
+ Copyright (C) 1997-2025 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
+ <https://www.gnu.org/licenses/>. */
+
+#include <fenv.h>
+
+int
+fesetround (int round)
+{
+ fexcept_t fpcr;
+
+ if (round & ~FE_UPWARD)
+ /* ROUND is no valid rounding mode. */
+ return 1;
+
+ __asm__ ("fmove%.l %!,%0" : "=dm" (fpcr));
+ fpcr &= ~FE_UPWARD;
+ fpcr |= round;
+ __asm__ __volatile__ ("fmove%.l %0,%!" : : "dm" (fpcr));
+
+ return 0;
+}