2002-01-18  Neil Booth  <neil@daikokuya.demon.co.uk>

	* functions/fn-financial.c (is_valid_basis, is_valid_freq): New.
	(gnumeric_accrint, gnumeric_accrintm, gnumeric_intrate,
	gnumeric_received, gnumeric_pricedisc, gnumeric_pricemat,
	gnumeric_disc, gnumeric_price, gnumeric_yield,
	gnumeric_oddfprice): Use them.