Nodes of different colours represent the following:
Solid arrows point from a procedure to one which it calls. Dashed
arrows point from an interface to procedures which implement that interface.
This could include the module procedures in a generic interface or the
implementation in a submodule of an interface in a parent module.
FUNCTION assert_eqn(nn,string)CHARACTER(LEN=*),INTENT(IN)::stringINTEGER,DIMENSION(:),INTENT(IN)::nnINTEGER::assert_eqnif(all(nn(2:)==nn(1)))thenassert_eqn=nn(1)else write(*,*)'nrerror: an assert_eq failed with this tag:',&stringSTOP'program terminated by assert_eqn'end if END FUNCTION assert_eqn