cmake ELEM_HAVE_DPOTRF_POST examples

m-a-d-n-e-s-s/madness src/madness/external/elemental/cmake/tests/Math.cmake :45 

check_function_exists(dpotrf_ ELEM_HAVE_DPOTRF_POST)

m-a-d-n-e-s-s/madness src/madness/external/elemental/cmake/tests/Math.cmake :58 

elseif(ELEM_HAVE_DPOTRF_POST)