Nodes of different colours represent the following:
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arrows point from an interface to procedures which implement that interface.
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implementation in a submodule of an interface in a parent module.
Where possible, edges connecting nodes are
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large graphs.
Source Code
pure logical function is_leap_year(y)integer,intent(in)::y! Leap years are years divisible by 400 or (years divisible by 4 and not divisible by 100)is_leap_year=(400.divides.y).or.((4.divides.y).and..not.(100.divides.y))end function is_leap_year