1 files changed, 22 insertions, 0 deletions
diff --git a/lib/libc/i386/gen/flt_rounds.c b/lib/libc/i386/gen/flt_rounds.c
new file mode 100644
index 000000000000..cebd8e1eb098
--- /dev/null
+++ b/lib/libc/i386/gen/flt_rounds.c
@@ -0,0 +1,22 @@
+/*
+ * Written by J.T. Conklin, Apr 10, 1995
+ * Public domain.
+ */
+
+#include <float.h>
+
+static const int map[] = {
+	1,	/* round to nearest */
+	3,	/* round to zero */
+	2,	/* round to negative infinity */
+	0	/* round to positive infinity */
+};
+
+int
+__flt_rounds(void)
+{
+	int x;
+
+	__asm("fnstcw %0" : "=m" (x));
+        return (map[(x >> 10) & 0x03]);
+}