Merge pull request #42 from chrisguiney/expose-coefficient

Expose a Coefficient() function

decimal.go

@@ -418,6 +418,11 @@ func (d Decimal) Exponent() int32 {
 	return d.exp
 }
 
+// Coefficient returns the coefficient of the decimal.  It is scaled by 10^Exponent()
+func (d Decimal) Coefficient() *big.Int {
+	return d.value
+}
+
 // IntPart returns the integer component of the decimal.
 func (d Decimal) IntPart() int64 {
 	scaledD := d.rescale(0)

decimal_test.go

@@ -1338,6 +1338,14 @@ func didPanic(f func()) bool {
 
 }
 
+func TestDecimal_Coefficient(t *testing.T) {
+	d := New(123, 0)
+	co := d.Coefficient()
+	if co.Int64() != 123 {
+		t.Error("Coefficient should be 123; Got:", co)
+	}
+}
+
 type DecimalSlice []Decimal
 
 func (p DecimalSlice) Len() int           { return len(p) }