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cc65/libsrc/common/abs.s
cuz 3f06947b36 Squeeze two cycles out of the abs() function
git-svn-id: svn://svn.cc65.org/cc65/trunk@2508 b7a2c559-68d2-44c3-8de9-860c34a00d81
2003-10-10 17:59:00 +00:00

17 lines
196 B
ArmAsm

;
; Ullrich von Bassewitz, 17.06.1998
;
; int abs (int x);
;
.export _abs
.import negax
_abs: cpx #$00 ; test hi byte
bpl L1
jmp negax ; Negate if negative
L1: rts