cgocall bug fix.

better FFI demo: compute fibonacci numbers using FFI'ed libgmp.

R=r
DELTA=281  (255 added, 19 deleted, 7 changed)
OCL=33815
CL=33820

1 files changed, 28 insertions, 0 deletions

diff --git a/usr/rsc/gmp/main.go b/usr/rsc/gmp/main.go
new file mode 100644
index 000000000..0b25d2544
--- /dev/null
+++ b/usr/rsc/gmp/main.go
@@ -0,0 +1,28 @@
+// Copyright 2009 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.
+
+
+package main
+
+import big "gmp"
+//import "big"
+import "fmt"
+
+func Fib(n int) *big.Int {
+	a := big.NewInt(0);
+	b := big.NewInt(1);
+
+	for i := 0; i < n; i++ {
+		a, b = b, a;
+		b.Add(a, b);
+	}
+
+	return b;
+}
+
+func main() {
+	for i := 0; i <= 100; i++ {
+		fmt.Println(5*i, Fib(5*i));
+	}
+}