home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Language/OS - Multiplatform Resource Library
/
LANGUAGE OS.iso
/
dsp
/
dr.bub
/
96000.lha
/
96000
/
appb
/
b18.asm
< prev
next >
Wrap
Assembly Source File
|
1992-04-28
|
2KB
|
32 lines
; This program was originally published in the Motorola DSP96002 Users Manual
; and is provided under a DISCLAIMER OF WARRANTY available from Motorola DSP
; Operation, 6501 William Cannon Drive West, Austin, Texas 78735-8598. For
; more information, refer to the DSP96002 Users Manual, Appendix B, DSP
; Benchmarks.
;
; B.1.8 N Complex Multiplies
; cr(I) + jci(I) = ( ar(I) + jai(I) ) * ( br(I) + jbi(I) ), I=1,...,N
;
; cr(I) = ar(I) * br(I) - ai(I) * bi(I)
; ci(I) = ar(I) * bi(I) + ai(I) * br(I)
;
; R1 ? cr,ci R0 ? ar,ai R4 ? br,bi
; D5 = ar D6 = bi D4 = br D7 = ai
; Program ICycles
; Words
move #aaddr,r0 ; 1 1
move #baddr,r4 ; 1 1
move #caddr-1,r1 ; 1 1
move x:(r0),d5.s y:(r4),d6.s ; 1 1
fmpy.s d6,d5,d1 x:(r4)+,d4.s y:(r0)+,d7.s ; 1 1
fmpy.s d4,d7,d2 ; 1 1
do #N,_end ; 2 3
fmpy d6,d7,d2 fadd.s d2,d1 y:(r0),d7.s ; 1 1
fmpy.s d4,d5,d0 x:(r0)+,d5.s y:(r4),d6.s ; 1 1
fmpy d6,d5,d1 fsub.s d2,d0 x:(r4)+,d4.s d1.s,y:(r1) ; 1 1
fmpy.s d4,d7,d2 d0.s,x:(r1)+ ; 1 1
_end ; --- ---
; Totals: 12 4N+9
; ( 12 4N+9)