boolean array to signed integer

[Pianne]

Hi all,

I struggling with the following:

I read a 64-bit boolean array from a device. This boolean array represents a varying collection of numbers, either signed or unsigned.

I have the composition of the array, i.e. bit 1-15 is a signed 16-bit integer, bit 16-23 is an unsigned 8-bit integer and so on...

So I can divide the boolean array into the corresponding bit-arrays to convert them to numbers. For unsigned numbers I simply use the "boolean array to number" function and that works fine (output is a U32).

Now here's the problem: This does not work for signed integers... the output of the "boolean array to number" function is always an U32, even if I select "sign extension mode"=always from the context menu of the function, so a negative value can never be extracted.

Any suggestions of how to solve this? I've tried typecasting but I can't get it to work.

Regards,

PJ

[GerdW · Accepted solution]

Hi Pianne,

right-click the BoolArrayToNum function and set the correct output datatype in the properties!

[dan_u]

Just right-click the "Boolean Array To Number" primitive, select Properties. On the Output Configuration tab, set the desired representation.

[Pianne]

DOH!  

Thank you very much!

I overlooked that.

PJ.