Algebrite/sources/numerator.coffee at 51d40342210d7b4dc574bc1a27fcf28613eb624c · davidedc/Algebrite · GitHub

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Eval_numerator = ->
	push(cadr(p1))
	Eval()
	numerator()

numerator = ->
	h = 0

	theArgument = pop()


	if (car(theArgument) == symbol(ADD))
		push(theArgument)
		#console.trace "rationalising "
		rationalize()
		theArgument = pop()
		#console.log "rationalised: " + theArgument

	if (car(theArgument) == symbol(MULTIPLY) and !isplusone(car(cdr(theArgument))))
		h = tos
		theArgument = cdr(theArgument)
		#console.log "theArgument inside multiply: " + theArgument
		#console.log "first term: " + car(theArgument)

		while (iscons(theArgument))
			push(car(theArgument))
			numerator()
			theArgument = cdr(theArgument)
		multiply_all(tos - h)
	else if (isrational(theArgument))
		push(theArgument)
		mp_numerator()
	else if (car(theArgument) == symbol(POWER) && isnegativeterm(caddr(theArgument)))
		push(one)
	else
		push(theArgument)