vendor: Add dependencies for discosrv

vendor/github.com/cznic/mathutil/example3/example3.go

@@ -0,0 +1,43 @@
+// Copyright (c) 2011 CZ.NIC z.s.p.o. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// blame: jnml, labs.nic.cz
+
+// +build ignore
+
+package main
+
+import (
+	"bufio"
+	"flag"
+	"log"
+	"math/rand"
+	"os"
+)
+
+/*
+
+$ # Usage e.g.:
+$ go run example3.go -max 1024 > rand.dat # generate 1kB of "random" data
+
+*/
+func main() {
+	r := rand.New(rand.NewSource(1))
+	var mflag uint64
+	flag.Uint64Var(&mflag, "max", 0, "limit output to max bytes")
+	flag.Parse()
+	stdout := bufio.NewWriter(os.Stdout)
+	if mflag != 0 {
+		for i := uint64(0); i < mflag; i++ {
+			if err := stdout.WriteByte(byte(r.Int())); err != nil {
+				log.Fatal(err)
+			}
+		}
+		stdout.Flush()
+		return
+	}
+
+	for stdout.WriteByte(byte(r.Int())) == nil {
+	}
+}