Find value from longfill

bennettdan

Hello,
What I want to know is how to loop through say three longs that i have used the "LONGFILL" instruction to enter the values to see if they match a know value then execute a function if they match.

andrewsi

I'd love to try to help, but I'm finding your description very hard to understand. LONGFILL will take a certain value and fill a range of memory with that value repeatedly. What are you trying to compare, and what are you trying to accomplisb?

JonnyMac

As Andrew points out, longfill will fill the group of longs with the same value -- longmove copies a set of values from one location to another. You could write a simple compare method like this to see if one set of longs matches another:

pub lcompare(pntr1, pntr2, len) | count

  count := 0

  repeat len
    if (long[pntr1][count] == long[pntr2][count])
      count += 1 
    else
      quit 

  return (count == len)

You have to pass the addresses of the arrays you want to check, as well as the length. If they match, you get true back, otherwise false.

Ariba

If you define the 3 longs as an array, then you can access them easy.

VAR
 long longvars[3]
 long ok, i

PUB TestIt
  longfill(@longvars, 9999, 3)  'fill the 3 longs
  ok := true
  repeat i from 0 to 2
    if longvars[i] <> 9999      'test if value matches
      ok := false

If you only have a pointer to the 3 longs then use the methode that JonnyMac shows.

Andy

bennettdan

Thanks Andrew, Jon and Andy
Let me see if I understand you gentlemen right if I have the Pointer name and Length of the long I am looking for then Jon's example will return true it if it is match. If I want to scan each Value in an array of longs then Andy's example will look at each Value not just the name and length. Is this Correct?