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Power Programmierung
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Power-Programmierung (Tewi)(1994).iso
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sampler0
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sqrt2.asm
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Assembly Source File
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1986-03-01
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896b
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26 lines
TITLE Square Root By Odd Numbers (ANS41.ASM)
PAGE ,132
OUR_CODE SEGMENT PARA 'CODE'
PUBLIC SR32
SR32 PROC FAR
ASSUME CS:OUR_CODE
PUSH AX ;Save original number
PUSH DX
PUSH CX ; and CX on stack
MOV BX,1 ;To start, (BX) = 1
SUB CX,CX ; and (CX) = 0
AGAIN: SUB AX,BX ;Subtract next odd no. from AX
SBB DX,0 ; and DX
JC DONE ;Did sub. create a borrow?
INC CX ; No. Increment the square root,
ADD BX,2 ; calculate the next odd no.
JMP AGAIN ; then go make next subtraction
DONE: MOV BX,CX ; Yes. Transfer result to BX
POP CX ; and restore the registers
POP DX
POP AX
RET
SR32 ENDP
OUR_CODE ENDS
END SR32