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go/misc/cgo/life/main.go
Russ Cox 0a006b4923 misc/cgo: prepare for 64-bit ints
In a few places, the existing cgo tests assume that a
Go int is the same as a C int. Making int 64 bits wide
on 64-bit platforms violates this assumption.
Change that code to assume that Go int32 and C int
are the same instead. That's still not great, but it's better,
and I am unaware of any systems we run on where it is not true.

Update #2188.

R=iant, r
CC=golang-dev
https://golang.org/cl/6552064
2012-09-24 14:58:45 -04:00

49 lines
802 B
Go

// cmpout
// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build ignore
// Run the game of life in C using Go for parallelization.
package main
import (
"."
"flag"
"fmt"
)
const MAXDIM = 100
var dim = flag.Int("dim", 16, "board dimensions")
var gen = flag.Int("gen", 10, "generations")
func main() {
flag.Parse()
var a [MAXDIM * MAXDIM]int32
for i := 2; i < *dim; i += 8 {
for j := 2; j < *dim-3; j += 8 {
for y := 0; y < 3; y++ {
a[i**dim+j+y] = 1
}
}
}
life.Run(*gen, *dim, *dim, a[:])
for i := 0; i < *dim; i++ {
for j := 0; j < *dim; j++ {
if a[i**dim+j] == 0 {
fmt.Print(" ")
} else {
fmt.Print("X")
}
}
fmt.Print("\n")
}
}