This fix formula calculation accuracy issue and panic when set pane

- Fix `GROWTH` and `TREND` calculation accuracy issue
- Fix panic when add pane on empty sheet views worksheet
- New exported constants `MinFontSize`

1 files changed, 1 insertions, 2 deletions

diff --git a/calc.go b/calc.go
index f71f3e8..8a80fb5 100644
--- a/calc.go
+++ b/calc.go
@@ -4579,8 +4579,7 @@ func newFormulaArgMatrix(numMtx [][]float64) (arg [][]formulaArg) {
 	for r, row := range numMtx {
 		arg = append(arg, make([]formulaArg, len(row)))
 		for c, cell := range row {
-			decimal, _ := big.NewFloat(cell).SetPrec(15).Float64()
-			arg[r][c] = newNumberFormulaArg(decimal)
+			arg[r][c] = newNumberFormulaArg(cell)
 		}
 	}
 	return