ref #65: new formula function PRICE

- fix COUPPCD result accuracy issue
- update close spreadsheet example in documentation and README

1 files changed, 1 insertions, 1 deletions

diff --git a/lib.go b/lib.go
index 535161a..ccb09ac 100644
--- a/lib.go
+++ b/lib.go
@@ -526,7 +526,7 @@ func bytesReplace(s, old, new []byte, n int) []byte {
 	}
 
 	w += copy(s[w:], s[i:])
-	return s[0:w]
+	return s[:w]
 }
 
 // genSheetPasswd provides a method to generate password for worksheet