anchor.diff:  ! Define universal constants:
   ! In the case of exactly representable numbers, the definitions are useful 
   ! to ensure subprogram argument type/kind/rank matching without having to
  -! repind kind specifiers everywhere.
  +! repeat kind specifiers everywhere.
   module constants_module
     use iso_fortran_env, only : int64
     implicit none
  
positive.code: ! LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ! ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  ! (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  !
  
  !(*----------------------------------------------------------------------------------------------------------------------
  
negative.code: ! Initialize the random seed with a varying seed to ensure a different
  ! random number sequence for each invocation of subroutine, e.g. for 
  ! invocations on different images of a coarray parallel program.
  ! Setting any seed values to zero is deprecated because it can result
  ! in low-quality random number sequences.
  ! (Source: https://gcc.gnu.org/onlinedocs/gfortran/RANDOM_005fSEED.html)
  module random_module
  