Method rescale

decimal.go:485–510

rescale returns a rescaled version of the decimal. Returned decimal may be less precise if the given exponent is bigger than the initial exponent of the Decimal. NOTE: this will truncate, NOT round Example: d := New(12345, -4) d2 := d.rescale(-1) d3 := d2.rescale(-4) println(d1) println(d2)

(exp int32)

//	1.2
//	1.2000
func (d Decimal) rescale(exp int32) Decimal {
	d.ensureInitialized()

	if d.exp == exp {
		return Decimal{
			new(big.Int).Set(d.value),
			d.exp,
		}
	}

	// NOTE(vadim): must convert exps to float64 before - to prevent overflow
	diff := math.Abs(float64(exp) - float64(d.exp))
	value := new(big.Int).Set(d.value)

	expScale := new(big.Int).Exp(tenInt, big.NewInt(int64(diff)), nil)
	if exp > d.exp {
		value = value.Quo(value, expScale)
	} else if exp < d.exp {
		value = value.Mul(value, expScale)
	}

	return Decimal{
		value: value,
		exp:   exp,
	}
}

// Abs returns the absolute value of the decimal.
func (d Decimal) Abs() Decimal {