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https://github.com/golang/go
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fc0dc04095
Very few of the compiler regression tests include a comment saying waht they do. Many are obvious, some are anything but. I've started with a-c in the top directory. More will follow once we agree on the approach, correctness, and thoroughness here. zerodivide.go sneaked in too. R=rsc, r CC=golang-dev https://golang.org/cl/5656100
76 lines
1.6 KiB
Go
76 lines
1.6 KiB
Go
// run
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// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Solve the 2,3,5 problem (print all numbers with 2, 3, or 5 as factor) using channels.
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// Test the solution, silently.
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package main
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type T chan uint64
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func M(f uint64) (in, out T) {
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in = make(T, 100)
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out = make(T, 100)
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go func(in, out T, f uint64) {
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for {
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out <- f*<-in
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}
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}(in, out, f)
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return in, out
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}
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func min(xs []uint64) uint64 {
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m := xs[0]
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for i := 1; i < len(xs); i++ {
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if xs[i] < m {
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m = xs[i]
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}
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}
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return m
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}
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func main() {
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F := []uint64{2, 3, 5}
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var n = len(F)
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OUT := []uint64{
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2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 27, 30, 32, 36,
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40, 45, 48, 50, 54, 60, 64, 72, 75, 80, 81, 90, 96, 100, 108, 120, 125,
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128, 135, 144, 150, 160, 162, 180, 192, 200, 216, 225, 240, 243, 250,
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256, 270, 288, 300, 320, 324, 360, 375, 384, 400, 405, 432, 450, 480,
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486, 500, 512, 540, 576, 600, 625, 640, 648, 675, 720, 729, 750, 768,
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800, 810, 864, 900, 960, 972, 1000, 1024, 1080, 1125, 1152, 1200, 1215,
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1250, 1280, 1296, 1350, 1440, 1458, 1500, 1536, 1600}
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x := uint64(1)
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ins := make([]T, n)
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outs := make([]T, n)
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xs := make([]uint64, n)
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for i := 0; i < n; i++ {
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ins[i], outs[i] = M(F[i])
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xs[i] = x
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}
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for i := 0; i < len(OUT); i++ {
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for i := 0; i < n; i++ {
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ins[i] <- x
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}
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for i := 0; i < n; i++ {
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if xs[i] == x {
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xs[i] = <-outs[i]
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}
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}
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x = min(xs)
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if x != OUT[i] {
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println("bad: ", x, " should be ", OUT[i])
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panic("235")
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}
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}
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}
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