Returns a vector containing the results of a less-than comparison between each set of corresponding elements of the given vectors.
Elemental function
If ARG1 is an INTEGER(1) vector or UNSIGNED(1) vector, then the result is an UNSIGNED(1) vector. If ARG1 is an INTEGER(2) vector or UNSIGNED(2) vector, then the result is an UNSIGNED(2) vector. Otherwise, the result is an UNSIGNED(4) vector.
For each element of the result, the value of each bit is 1 if the value of the corresponding element of ARG1 is less than the value of the corresponding element of ARG2. Otherwise, the value of each bit is 0.