module friction_errors use iso_fortran_env implicit none integer(int32), parameter :: FRICTION_ARRAY_SIZE_ERROR = 100000 !! Defines an array size error. integer(int32), parameter :: FRICTION_MEMORY_ERROR = 100001 !! Defines a memory allocation error. integer(int32), parameter :: FRICTION_INVALID_OPERATION_ERROR = 100002 !! Defines an error within the opration of a routine. end module