Latest revision as of 15:15, 4 February 2014

Action

Returns a value from a table.

Syntax

var = LOOKUP( value, label)

Remarks

The maximum index value to use is 65535. The first entry will return a value of 0.

All items in the data table must be of the same data type. So you can not mix bytes and singles for example.

The data type of the return value must match the data type of the items in the table.

So this is wrong :

dim x as single

x=lookup(2,Dta)

dta:

data 1,2,3   'data does not match the used single in lookup

See also

LOOKUPSTR , DATA , LOOKDOWN

Example

$regfile = "m48def.dat" ' specify the used micro
$crystal = 4000000 ' used crystal frequency
$baud = 19200 ' use baud rate
$hwstack = 32 ' default use 32 for the hardware stack
$swstack = 10 ' default use 10 for the SW stack
$framesize = 40 ' default use 40 for the frame space
 
Dim B1 As Byte , I As Integer
B1 = Lookup(2 , Dta)
Print B1 ' Prints 3 (zero based)
 
I = Lookup(0 , Dta2) ' print 1000
Print I
End
 
 
Dta:
Data 1 , 2 , 3 , 4 , 5
Dta2:
Data 1000% , 2000%