INTERFACE
SUBROUTINE SPEC_SPLIT(YDSPIN,YDSP1,YDSP2)
USE SPECTRAL_FIELDS_MOD
TYPE(SPECTRAL_FIELD), INTENT(IN) :: YDSPIN
TYPE(SPECTRAL_FIELD), INTENT(INOUT) :: YDSP1
TYPE(SPECTRAL_FIELD), INTENT(INOUT) :: YDSP2
END SUBROUTINE SPEC_SPLIT
END INTERFACE
