1 files changed, 22 insertions, 0 deletions
diff --git a/vendor/github.com/soniakeys/graph/bits64.go b/vendor/github.com/soniakeys/graph/bits64.go
new file mode 100644
index 0000000..ab601dd
--- /dev/null
+++ b/vendor/github.com/soniakeys/graph/bits64.go
@@ -0,0 +1,22 @@
+// Copyright 2014 Sonia Keys
+// License MIT: http://opensource.org/licenses/MIT
+
+// +build !386,!arm
+
+package graph
+
+const (
+	wordSize = 64
+	wordExp  = 6 // 2^6 = 64
+)
+
+// reference: http://graphics.stanford.edu/~seander/bithacks.html
+const deBruijnMultiple = 0x03f79d71b4ca8b09
+const deBruijnShift = 58
+
+var deBruijnBits = []int{
+	0, 1, 56, 2, 57, 49, 28, 3, 61, 58, 42, 50, 38, 29, 17, 4,
+	62, 47, 59, 36, 45, 43, 51, 22, 53, 39, 33, 30, 24, 18, 12, 5,
+	63, 55, 48, 27, 60, 41, 37, 16, 46, 35, 44, 21, 52, 32, 23, 11,
+	54, 26, 40, 15, 34, 20, 31, 10, 25, 14, 19, 9, 13, 8, 7, 6,
+}