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_eq4(n1,n2,n3,n4,string)CHARACTER(LEN=*),INTENT(IN)::stringINTEGER,INTENT(IN)::n1,n2,n3,n4INTEGER::assert_eq4if(n1==n2.and.n2==n3.and.n3==n4)thenassert_eq4=n1else write(*,*)'nrerror: an assert_eq failed with this tag:',&stringSTOP'program terminated by assert_eq4'end if END FUNCTION assert_eq4