Method Mul

ecgo/builder/api.go:111–132

Mul computes the product of the given variables.

(i1, i2 frontend.Variable, in ...frontend.Variable)

// Mul computes the product of the given variables.
func (builder *builder) Mul(i1, i2 frontend.Variable, in ...frontend.Variable) frontend.Variable {
	vars := builder.toVariableIds(append([]frontend.Variable{i1, i2}, in...)...)
	allConst := true
	if sum, ok := builder.constantValue(vars[0]); ok {
		for _, x := range vars[1:] {
			if v, ok := builder.constantValue(x); ok {
				sum = builder.field.Mul(sum, v)
			} else {
				allConst = false
				break
			}
		}
		if allConst {
			return builder.toVariable(sum)
		}
	}
	builder.instructions = append(builder.instructions, irsource.Instruction{
		Type:   irsource.Mul,
		Inputs: vars,
	})
	return builder.addVar()
}

// DivUnchecked returns i1 divided by i2 and returns 0 if both i1 and i2 are zero.
func (builder *builder) DivUnchecked(i1, i2 frontend.Variable) frontend.Variable {