Method IsInteger

decimal.go:1269–1285

IsInteger returns true when decimal can be represented as an integer value, otherwise, it returns false.

()

// IsInteger returns true when decimal can be represented as an integer value, otherwise, it returns false.
func (d Decimal) IsInteger() bool {
	// The most typical case, all decimal with exponent higher or equal 0 can be represented as integer
	if d.exp >= 0 {
		return true
	}
	// When the exponent is negative we have to check every number after the decimal place
	// If all of them are zeroes, we are sure that given decimal can be represented as an integer
	var r big.Int
	q := new(big.Int).Set(d.value)
	for z := abs(d.exp); z > 0; z-- {
		q.QuoRem(q, tenInt, &r)
		if r.Cmp(zeroInt) != 0 {
			return false
		}
	}
	return true
}

// Abs calculates absolute value of any int32. Used for calculating absolute value of decimal's exponent.
func abs(n int32) int32 {