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bittest

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Purpose

Test bit settings.

Synopsis

function bittest(i:integer, mask:integer):integer

Arguments

i	Non-negative integer to be tested
mask	Bit mask

Return value

Bits selected by the mask.

Example

In the following, i takes the value 4, j takes the value 5, and k takes the value 8:

i:= bittest(12, 5)
j:= bittest(13, 5)
k:= bittest(13, 10)

Further information

This function compares a given number with a bit mask and returns those bits selected by the mask that are set in the number (bit 0 has value 1, bit 1 has value 2, bit 2 has value 4, and so on).

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