add missing docstring
add missing docstring

sklam/numba,seibert/numba,stuartarchibald/numba,cpcloud/numba,stonebig/numba,jriehl/numba,sklam/numba,jriehl/numba,jriehl/numba,IntelLabs/numba,seibert/numba,IntelLabs/numba,sklam/numba,stuartarchibald/numba,numba/numba,stuartarchibald/numba,cpcloud/numba,seibert/numba,cpcloud/numba,stuartarchibald/numba,gmarkall/numba,numba/numba,numba/numba,seibert/numba,gmarkall/numba,IntelLabs/numba,sklam/numba,cpcloud/numba,sklam/numba,numba/numba,stonebig/numba,gmarkall/numba,jriehl/numba,stonebig/numba,numba/numba,cpcloud/numba,IntelLabs/numba,stuartarchibald/numba,IntelLabs/numba,gmarkall/numba,stonebig/numba,stonebig/numba,jriehl/numba,gmarkall/numba,seibert/numba