This commit was manufactured by cvs2svn to create tag 'v1_6_4'.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v1_6_4@1498 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 17 insertions, 0 deletions

diff --git a/missing/hypot.c b/missing/hypot.c
new file mode 100644
index 0000000000..aad5259e92
--- /dev/null
+++ b/missing/hypot.c
@@ -0,0 +1,17 @@
+/* public domain rewrite of hypot */
+
+#include <math.h>
+
+double hypot(x,y)
+    double x, 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);
+}