How to resolve the algorithm Factors of an integer step by step in the 360 Assembly programming language

Published on 12 May 2024 09:40 PM
#360 assembly

How to resolve the algorithm Factors of an integer step by step in the 360 Assembly programming language

Table of Contents

Problem Statement

Compute the   factors   of a positive integer. These factors are the positive integers by which the number being factored can be divided to yield a positive integer result. (Though the concepts function correctly for zero and negative integers, the set of factors of zero has countably infinite members, and the factors of negative integers can be obtained from the factors of related positive numbers without difficulty;   this task does not require handling of either of these cases). Note that every prime number has two factors:   1   and itself.

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Step by Step solution about How to resolve the algorithm Factors of an integer step by step in the 360 Assembly programming language

Source code in the 360 programming language

*        Factors of an integer -   07/10/2015
FACTOR   CSECT
         USING  FACTOR,R15         set base register
         LA     R7,PG              pgi=@pg
         LA     R6,1               i
         L      R3,N               loop count
LOOP     L      R5,N               n
         LA     R4,0
         DR     R4,R6              n/i
         LTR    R4,R4              if mod(n,i)=0
         BNZ    NEXT
         XDECO  R6,PG+120          edit i
         MVC    0(6,R7),PG+126     output i
         LA     R7,6(R7)           pgi=pgi+6
NEXT     LA     R6,1(R6)           i=i+1
         BCT    R3,LOOP            loop
         XPRNT  PG,120             print buffer
         XR     R15,R15            set return code
         BR     R14                return to caller
N        DC     F'12345'           <== input value
PG       DC     CL132' '           buffer
         YREGS
         END    FACTOR

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