SYNOPSIS

string and_bits( string str1, string str2)

DESCRIPTION

str1 and str2 are both bitstrings. The result of the function is a bitstring with the binary-and of str1 and str2, ie. a string in which a bit is set only if both corresponding bits in the input strings are set, too.

USAGE

string s1, s2, s3;

s1 = set_bit("", 3); s1 = set_bit(s1, 15);  -> s1 is "( ("
s2 = set_bit("", 3); s2 = set_bit(s2, 4);   -> s2 is "8"

s3 = and_bits(s1, s2);

-> s3 is now "8", ie. a bitstring with bit 3 set only.