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-rw-r--r--lib/libc/arch/sparc/gen/fpsetround.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/lib/libc/arch/sparc/gen/fpsetround.c b/lib/libc/arch/sparc/gen/fpsetround.c
new file mode 100644
index 00000000000..924509bcaa9
--- /dev/null
+++ b/lib/libc/arch/sparc/gen/fpsetround.c
@@ -0,0 +1,24 @@
+/*
+ * Written by J.T. Conklin, Apr 10, 1995
+ * Public domain.
+ */
+
+#include <ieeefp.h>
+
+fp_rnd
+fpsetround(rnd_dir)
+ fp_rnd rnd_dir;
+{
+ fp_rnd old;
+ fp_rnd new;
+
+ __asm__("st %%fsr,%0" : "=m" (*&old));
+
+ new = old;
+ new &= ~(0x03 << 30);
+ new |= ((rnd_dir & 0x03) << 30);
+
+ __asm__("ld %0,%%fsr" : : "m" (*&new));
+
+ return (old >> 30) & 0x03;
+}