sparse branch: Test if target for union already has the correct value.
sparse branch:
Test if target for union already has the correct value.

wegamekinglc/CppAD,wegamekinglc/CppAD,wegamekinglc/CppAD,kaskr/CppAD,wegamekinglc/CppAD,kaskr/CppAD,wegamekinglc/CppAD,kaskr/CppAD,kaskr/CppAD,kaskr/CppAD