This closes #1262, support for dependence formulas calculation

- Add export option `MaxCalcIterations` for specifies the maximum iterations for iterative calculation
- Update unit test for the database formula functions

1 files changed, 4 insertions, 0 deletions

diff --git a/excelize.go b/excelize.go
index 580bc29..da51b13 100644
--- a/excelize.go
+++ b/excelize.go
@@ -63,6 +63,9 @@ type charsetTranscoderFn func(charset string, input io.Reader) (rdr io.Reader, e
 
 // Options define the options for open and reading spreadsheet.
 //
+// MaxCalcIterations specifies the maximum iterations for iterative
+// calculation, the default value is 0.
+//
 // Password specifies the password of the spreadsheet in plain text.
 //
 // RawCellValue specifies if apply the number format for the cell value or get
@@ -78,6 +81,7 @@ type charsetTranscoderFn func(charset string, input io.Reader) (rdr io.Reader, e
 // should be less than or equal to UnzipSizeLimit, the default value is
 // 16MB.
 type Options struct {
+	MaxCalcIterations uint
 	Password          string
 	RawCellValue      bool
 	UnzipSizeLimit    int64