1 files changed, 0 insertions, 34 deletions
diff --git a/doc/play/pi.go b/doc/play/pi.go
deleted file mode 100644
index f61884e888..0000000000
--- a/doc/play/pi.go
+++ /dev/null
@@ -1,34 +0,0 @@
-// Concurrent computation of pi.
-// See https://goo.gl/la6Kli.
-//
-// This demonstrates Go's ability to handle
-// large numbers of concurrent processes.
-// It is an unreasonable way to calculate pi.
-package main
-
-import (
-	"fmt"
-	"math"
-)
-
-func main() {
-	fmt.Println(pi(5000))
-}
-
-// pi launches n goroutines to compute an
-// approximation of pi.
-func pi(n int) float64 {
-	ch := make(chan float64)
-	for k := 0; k <= n; k++ {
-		go term(ch, float64(k))
-	}
-	f := 0.0
-	for k := 0; k <= n; k++ {
-		f += <-ch
-	}
-	return f
-}
-
-func term(ch chan float64, k float64) {
-	ch <- 4 * math.Pow(-1, k) / (2*k + 1)
-}