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 fGamma(x,k,t)REAL(rp),INTENT(IN)::x! Independent variableREAL(rp),INTENT(IN)::k! Shape factorREAL(rp),INTENT(IN)::t! Scale factorREAL(rp)::fGammafGamma=x**(k-1.0_rp)*EXP(-x/t)/(GAMMA(k)*t**k)END FUNCTION fGamma