diff options
| -rw-r--r-- | decimal.go | 7 |
1 files changed, 4 insertions, 3 deletions
@@ -386,14 +386,15 @@ func (d Decimal) Rescale(exp int32) Decimal { // func (d Decimal) rescale(exp int32) Decimal { d.ensureInitialized() - // NOTE(vadim): must convert exps to float64 before - to prevent overflow - diff := math.Abs(float64(exp) - float64(d.exp)) + // NOTE: convert exps to int64 before - to prevent overflow + diff := int64(exp) - int64(d.exp) value := new(big.Int).Set(d.value) - expScale := new(big.Int).Exp(tenInt, big.NewInt(int64(diff)), nil) if exp > d.exp { + expScale := new(big.Int).Exp(tenInt, big.NewInt(diff), nil) value = value.Quo(value, expScale) } else if exp < d.exp { + expScale := new(big.Int).Exp(tenInt, big.NewInt(-diff), nil) value = value.Mul(value, expScale) } |