1 files changed, 16 insertions, 0 deletions
diff --git a/trunk/missing/hypot.c b/trunk/missing/hypot.c
new file mode 100644
index 0000000000..5a663553cf
--- /dev/null
+++ b/trunk/missing/hypot.c
@@ -0,0 +1,16 @@
+/* public domain rewrite of hypot */
+
+#include <math.h>
+
+double hypot(double x, double y)
+{
+    if (x < 0) x = -x;
+    if (y < 0) y = -y;
+    if (x < y) {
+	double tmp = x;
+	x = y; y = tmp;
+    }
+    if (y == 0.0) return x;
+    y /= x;
+    return x * sqrt(1.0+y*y);
+}