;; #LAYOUT# STD * #TAKE ;; #LAYOUT# X16 BASIC_0 #TAKE-OFFSET 2000 ;; #LAYOUT# * BASIC_0 #TAKE ;; #LAYOUT# * * #IGNORE ; ; Math package - compare FAC1 with RAM location ; ; Input: ; - .A - address low byte ; - .Y - address high byte ; ; Output: ; - .A - $00 for equal, $01 for FAC1 > RAM, $FF for FAC1 < RAM ; - flags N/Z, depending on whether FAC1 is 0, positive, or negative ; ; Notes: ; - uses vector at $24, leaves FAC1 and FAC2 unchanged (Codebase64) ; ; See also: ; - [CM64] Computes Mapping the Commodore 64 - page 115 ; - https://www.c64-wiki.com/wiki/Floating_point_arithmetic ; - https://codebase64.org/doku.php?id=base:kernal_floating_point_mathematics ; ; XXX provide implementation FCOMP: +STUB_IMPLEMENTATION