Performs a bitwise AND on two integers.
Elemental function
Same as I.
The result has the value obtained by combining I and J bit-by-bit according to the following table:
ith bit ith bit ith bit of I of J of IAND(I,J) ------------------------------- 1 1 1 1 0 0 0 1 0 0 0 0
The bits are numbered from 0 to BIT_SIZE(I)-1, from right to left.
IAND (1, 3) has the value 1. See Integer bit model.