need help with getting pic to do some math

[Nobody/Anonymous]

here is the relavent parts:

#chip 16F685, 4 'mhz
#config OSC=INTOSC, MCLRE=off, WDT=off

dim test as word
dim lcdvalue as word
dim lcdvaluetemp as word

test = ReadAD10(AN0)
Bin2ascii1 (test_H)
Bin2ascii (test)

sub Bin2ascii1 (LCDValue)#NR
SERm = lcdvalue
end sub

sub Bin2ascii (LCDValue)#NR

if serm = 1 then
lcdvaluetemp = lcdvalue + 256
end if
if serm = 2 then
lcdvaluetemp = lcdvalue + 513
end if
if serm = 3 then
lcdvaluetemp = lcdvalue + 768
end if
if serm = 0 then
lcdvaluetemp = lcdvalue
end if

lcdvalue = lcdvaluetemp

lcdvaluetemp = lcdvalue / 1000
sertho = lcdvaluetemp 
lcdvalue = lcdvalue - lcdvaluetemp * 1000

lcdvaluetemp = lcdvalue / 100
SERCEN = LCDValueTemp 
LCDValue = LCDValue - LCDValueTemp * 100

LCDValueTemp = LCDValue /10
SERDEC = LCDValueTemp
LCDValue = LCDValue - LCDValueTemp *10

serone = LCDValue

I need to have the pic multiply the lcdvaluetemp by 0.4745 to make the output what I want
but all the ways I have tried to do this I get wierd outputs?

[Nobody/Anonymous]

Complex math does work in fact, in my experience.

Shouldn't that be 512 instead of 513?

Also, in your digit code, you will need seperate variables.  In the second / 100 part, you use LCDValue that has the 1000 remainder already.  I don't understand why you are trying to decode a value that is the same, I suspect there is a simpler way to do it in your case.

Also, you can force word math on a byte by using a [WORD] in the operation.  Not to say it's needed here.