Test bit settings (bitwise AND).

Bits selected by the mask.

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)

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 - use function bitval to get the value of a bit).

bitset, bitshift, bitflip, bitneg, bitval