Merge a3267013b7 into 80ec940054

* Drop support for Go versions older than 1.10
* Remove 1.18 from test suite

.github/workflows/ci.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go: [ '1.7.x', '1.18', '1.19', '1.20', '1.21', '1.x' ]
+        go: [ '1.10.x', '1.19', '1.20', '1.21', '1.22', '1.x' ]
     name: Go ${{ matrix.go }}
     steps:
       - uses: actions/checkout@v4

README.md

@@ -22,7 +22,7 @@ Run `go get github.com/shopspring/decimal`
 
 ## Requirements 
 
-Decimal library requires Go version `>=1.7`
+Decimal library requires Go version `>=1.10`
 
 ## Usage
 
@@ -63,11 +63,6 @@ func main() {
 
 http://godoc.org/github.com/shopspring/decimal
 
-## Production Usage
-
-* [Spring](https://shopspring.com/), since August 14, 2014.
-* If you are using this in production, please let us know!
-
 ## FAQ
 
 #### Why don't you just use float64?

decimal.go

@@ -130,6 +130,18 @@ func NewFromInt32(value int32) Decimal {
 	}
 }
 
+// NewFromUint64 converts an uint64 to Decimal.
+//
+// Example:
+//
+//	NewFromUint64(123).String() // output: "123"
+func NewFromUint64(value uint64) Decimal {
+	return Decimal{
+		value: new(big.Int).SetUint64(value),
+		exp:   0,
+	}
+}
+
 // NewFromBigInt returns a new Decimal from a big.Int, value * 10 ^ exp
 func NewFromBigInt(value *big.Int, exp int32) Decimal {
 	return Decimal{
@@ -1406,9 +1418,7 @@ func (d Decimal) IntPart() int64 {
 // BigInt returns integer component of the decimal as a BigInt.
 func (d Decimal) BigInt() *big.Int {
 	scaledD := d.rescale(0)
-	i := &big.Int{}
-	i.SetString(scaledD.String(), 10)
-	return i
+	return scaledD.value
 }
 
 // BigFloat returns decimal as BigFloat.
@@ -1819,6 +1829,11 @@ func (d Decimal) MarshalBinary() (data []byte, err error) {
 
 // Scan implements the sql.Scanner interface for database deserialization.
 func (d *Decimal) Scan(value interface{}) error {
+	if value == nil {
+		d = nil
+		return nil
+	}
+
 	// first try to see if the data is stored in database as a Numeric datatype
 	switch v := value.(type) {
 

decimal_test.go

@@ -476,10 +476,11 @@ func TestNewFromFloatWithExponent(t *testing.T) {
 
 func TestNewFromInt(t *testing.T) {
 	tests := map[int64]string{
-		0:                   "0",
-		1:                   "1",
-		323412345:           "323412345",
-		9223372036854775807: "9223372036854775807",
+		0:                    "0",
+		1:                    "1",
+		323412345:            "323412345",
+		9223372036854775807:  "9223372036854775807",
+		-9223372036854775808: "-9223372036854775808",
 	}
 
 	// add negatives
@@ -501,10 +502,11 @@ func TestNewFromInt(t *testing.T) {
 
 func TestNewFromInt32(t *testing.T) {
 	tests := map[int32]string{
-		0:          "0",
-		1:          "1",
-		323412345:  "323412345",
-		2147483647: "2147483647",
+		0:           "0",
+		1:           "1",
+		323412345:   "323412345",
+		2147483647:  "2147483647",
+		-2147483648: "-2147483648",
 	}
 
 	// add negatives
@@ -524,6 +526,25 @@ func TestNewFromInt32(t *testing.T) {
 	}
 }
 
+func TestNewFromUint64(t *testing.T) {
+	tests := map[uint64]string{
+		0:                    "0",
+		1:                    "1",
+		323412345:            "323412345",
+		9223372036854775807:  "9223372036854775807",
+		18446744073709551615: "18446744073709551615",
+	}
+
+	for input, s := range tests {
+		d := NewFromUint64(input)
+		if d.String() != s {
+			t.Errorf("expected %s, got %s (%s, %d)",
+				s, d.String(),
+				d.value.String(), d.exp)
+		}
+	}
+}
+
 func TestNewFromBigIntWithExponent(t *testing.T) {
 	type Inp struct {
 		val *big.Int

go.mod

@@ -1,3 +1,3 @@
 module github.com/shopspring/decimal
 
-go 1.7
+go 1.10