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Diffstat (limited to 'ports/sysdeps/m68k/fpu/fclrexcpt.c')
-rw-r--r--ports/sysdeps/m68k/fpu/fclrexcpt.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/ports/sysdeps/m68k/fpu/fclrexcpt.c b/ports/sysdeps/m68k/fpu/fclrexcpt.c
new file mode 100644
index 0000000000..ceda99cb98
--- /dev/null
+++ b/ports/sysdeps/m68k/fpu/fclrexcpt.c
@@ -0,0 +1,49 @@
+/* Clear given exceptions in current floating-point environment.
+ Copyright (C) 1997,99,2000,01 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
+
+ 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>
+
+int
+__feclearexcept (int excepts)
+{
+ fexcept_t fpsr;
+
+ /* Mask out unsupported bits/exceptions. */
+ excepts &= FE_ALL_EXCEPT;
+
+ /* Fetch the fpu status register. */
+ __asm__ ("fmove%.l %/fpsr,%0" : "=dm" (fpsr));
+
+ /* Clear the relevant bits. */
+ fpsr &= ~excepts;
+
+ /* Put the new data in effect. */
+ __asm__ __volatile__ ("fmove%.l %0,%/fpsr" : : "dm" (fpsr));
+
+ /* Success. */
+ return 0;
+}
+
+#include <shlib-compat.h>
+#if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
+strong_alias (__feclearexcept, __old_feclearexcept)
+compat_symbol (libm, __old_feclearexcept, feclearexcept, GLIBC_2_1);
+#endif
+
+versioned_symbol (libm, __feclearexcept, feclearexcept, GLIBC_2_2);