added

vendor/github.com/glycerine/zygomys/zygo/random.go

@@ -0,0 +1,17 @@
+package zygo
+
+import (
+	"math/rand"
+	"time"
+)
+
+var defaultRand = rand.New(rand.NewSource(time.Now().Unix()))
+
+func RandomFunction(env *Zlisp, name string,
+	args []Sexp) (Sexp, error) {
+	return &SexpFloat{Val: defaultRand.Float64()}, nil
+}
+
+func (env *Zlisp) ImportRandom() {
+	env.AddFunction("random", RandomFunction)
+}