Goddamn assembly...

For an assignment, I need to use MIPS to create a program that will check a number to see if it's a perfect number (All factors add up to the number.)  I have no freaking clue how to go about doing this.  It seems like I'd have to have it check every number before it to see if it's a factor, then add them all up to check to see if they work.  This seems kinda insane since it's more of a beginner class...

How would I go about even beginning something like this?  Is there any easier way to do it?

you only have to check each number up to and including the square root of, every factor (save the root itself) thus determined will have a corresponding factor which can be worked out by simple division.

>>2
You can have a simpler set of loops by walking the whole set. SQRT is a pain if you don't have a function to do it for you.

Anyway, due to boredom:
(place value to test into $t0)
ADD $t3 $0 $0//x = 0
ADDI $t1 $0 2//$t2 = 1
loop:
ADDI $t1 $t1 1//$t1++
SLT $t2 $t0 $t1 // $t2 = ($t0 < $t1) ? 1 : 0
BEQ $t2 $0 end  //IF !$t2 GOTO end
DIV $t0 $t1     //$HI = $t0 % $t1
MFHI $t2        //$t2 = $HI
BNE $t2 $0 loop //IF !$t2 GOTO loop
ADD $t3 $t3 $t1 //$t3 += $t1
j loop          //GOTO loop
end:


Anyway, all that's left is putting the result of $t3 == $t0 into a return register and JRing your way back into the flow.

Worse then Perl

The Microsofties of course   lol How are   we to know   when we need   more Also people   using sockpuppets could   easily stall editing   efforts by purposefully.

Bash A lexicon in.

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All work and no play makes Jack a dull boy
All work and no play makes Jack a dull boy
All work and no play makes Jack a dull boy
All work and no play makes Jack a dull boy
All work and no play makes Jack a dull boy
All work and no play makes Jack a dull boy
All work and no play makes Jack a dull boy