Motorola DSP96002 - Manual (Page 581)

B-62 DSP96002 USER’S MANUAL MOTOROLA
Program ICycles
Words
ori #$e0,ccr ;set accept/reject/overflow bits 1 1
move x:(r0)+n0,d0.s y:(r4)+,d1.s ;get x0,Xmin 1 1
fcmp d1,d0 x:(r0)-n0,d0.s ;x0-Xmin, get x1 1 1
fcmpg d1,d0 y:(r4)+,d1.s ;x1-Xmin, Xmax 1 1
fcmp d0,d1 x:(r0)+,d0.s ;Xmax-x1, get x0 1 1
fcmpg d0,d1 x:(r0)+n0,d0.s y:(r4)+,d1.s ;Xmax-x0, y0,Ymin 1 1
fcmp d1,d0 x:(r0)-n0,d0.s ;y0-Ymin, get y1 1 1
fcmpg d1,d0 y:(r4)+,d1.s ;y1-Ymin, Ymax 1 1
fcmp d0,d1 x:(r0)+,d0.s ;Ymax-y1, get y0 1 1
fcmpg d0,d1 x:(r0)+n0,d0.s y:(r4)+,d1.s ;Ymax-y0, z0,Zmin 1 1
fcmp d1,d0 x:(r0)-n0,d0.s ;z0-Zmin, get z1 1 1
fcmpg d1,d0 y:(r4)+,d1.s ;z1-Zmin, Zmax 1 1
fcmp d0,d1 x:(r0),d0.s ;Zmax-z1, get z0 1 1
fcmpg d0,d1 ;Zmax-z0 1 1
--- ---
Totals: 14 14
If the A bit is set, the line can be accepted. If the R bit is cleared, the line can be rejected.
B.1.33.3 Line Accept/Reject, Fixed Point Version
Program ICycles
Words
ori #e0,ccr ;set accept/reject/infinity bits 1 1
move x:(r0)+n0,d0.l y:(r4)+,d1.l ;get x0,Xmin 1 1
cmp d1,d0 x:(r0)-n0,d0.l ;x0-Xmin, get x1 1 1
cmpg d1,d0 y:(r4)+,d1.l ;x1-Xmin, Xmax 1 1
cmp d0,d1 x:(r0)+,d0.l ;Xmax-x1, get x0 1 1
cmpg d0,d1 x:(r0)+n0,d0.l y:(r4)+,d1.l ;Xmax-x0, y0,Ymin 1 1
cmp d1,d0 x:(r0)-n0,d0.l ;y0-Ymin, get y1 1 1
cmpg d1,d0 y:(r4)+,d1.l ;y1-Ymin, Ymax 1 1
cmp d0,d1 x:(r0)+,d0.l ;Ymax-y1, get y0 1 1
cmpg d0,d1 x:(r0)+n0,d0.l y:(r4)+,d1.l ;Ymax-y0, z0,Zmin 1 1
cmp d1,d0 x:(r0)-n0,d0.l ;z0-Zmin, get z1 1 1
cmpg d1,d0 y:(r4)+,d1.l ;z1-Zmin, Zmax 1 1
cmp d0,d1 x:(r0),d0.l ;Zmax-z1, get z0 1 1
cmpg d0,d1 ;Zmax-z0 1 1
--- ---
Totals: 14 14