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.
SUBROUTINE masked_swap_rs(a,b,mask)REAL(SP),INTENT(INOUT)::a,bLOGICAL(LGT),INTENT(IN)::maskREAL(SP)::swpif(mask)thenswp=aa=bb=swpend if END SUBROUTINE masked_swap_rs