module constants_m !! Definition of constant parameters use precision_m, only : FP implicit none save real(FP), public, parameter :: pi = 4.0_FP*atan(1.0_FP) real(FP), public, parameter :: two_pi = 2.0_FP*pi real(FP), public, parameter :: phiplaceholder = 0.0_FP end module constants_m