Method CmpTotal

decimal.go:450–490

CmpTotal compares d and x using their abstract representation rather than their numerical value. A total ordering is defined for all possible abstract representations, as described below. If the first operand is lower in the total order than the second operand then the result is -1, if the operands

(x *Decimal)

//	NaNSignaling
//	NaN
func (d *Decimal) CmpTotal(x *Decimal) int {
	do := d.cmpOrder()
	xo := x.cmpOrder()

	if do < xo {
		return -1
	}
	if do > xo {
		return 1
	}

	switch d.Form {
	case Finite:
		// d and x have the same sign and form, compare their value.
		if c := d.Cmp(x); c != 0 {
			return c
		}

		lt := -1
		gt := 1
		if d.Negative {
			lt = 1
			gt = -1
		}

		// Values are equal, compare exponents.
		if d.Exponent < x.Exponent {
			return lt
		}
		if d.Exponent > x.Exponent {
			return gt
		}
		return 0

	case Infinite:
		return 0

	default:
		return d.Coeff.Cmp(&x.Coeff)
	}
}

func (d *Decimal) cmpOrder() int {
	v := int(d.Form) + 1