1 files changed, 31 insertions, 0 deletions

diff --git a/lib/libF77/pow_ii.c b/lib/libF77/pow_ii.c
new file mode 100644
index 000000000000..e7948776e6c7
--- /dev/null
+++ b/lib/libF77/pow_ii.c
@@ -0,0 +1,31 @@
+#include "f2c.h"
+
+#ifdef KR_headers
+integer pow_ii(ap, bp) integer *ap, *bp;
+#else
+integer pow_ii(integer *ap, integer *bp)
+#endif
+{
+	integer pow, x, n;
+
+	x = *ap;
+	n = *bp;
+
+	if (n <= 0) {
+		if (n == 0 || x == 1)
+			return 1;
+		if (x != -1)
+			return x == 0 ? 1/x : 0;
+		n = -n;
+		}
+	for(pow = 1; ; )
+		{
+		if(n & 01)
+			pow *= x;
+		if(n >>= 1)
+			x *= x;
+		else
+			break;
+		}
+	return(pow);
+	}