utility_mod.F90
47b2d17e0d2agather_output

utility_mod.F90
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			MODULE utility

			USE basic

			use prec_const
			IMPLICIT NONE

			CONTAINS

			FUNCTION is_nan(x,str) RESULT(isn)

			USE time_integration

			use prec_const
			IMPLICIT NONE

			real(dp), INTENT(IN) :: x
			CHARACTER(LEN=*), INTENT(IN) :: str
			LOGICAL :: isn

			isn=.FALSE.
			IF(x .NE. x) THEN
			isn=.TRUE.
			END IF
			IF((isn).AND.(str.NE.'')) THEN
			WRITE(*,'(a20,a25,i6.6,a20,i1)') str,' = NaN at timestep',cstep, ' and substep',updatetlevel
			CALL FLUSH(stdout)
			END IF
			END FUNCTION is_nan


			FUNCTION is_inf(x,str) RESULT(isi)

			USE time_integration

			use prec_const
			IMPLICIT NONE

			real(dp), INTENT(IN) :: x
			CHARACTER(LEN=*), INTENT(IN) :: str
			LOGICAL :: isi

			isi=.FALSE.
			IF(x+1.0== x) THEN
			isi=.TRUE.
			END IF
			IF((isi).AND.(str.NE.'')) THEN
			WRITE(*,'(a20,a25,i6.6,a20,i1)') str,' = Inf at timestep',cstep, ' and substep',updatetlevel
			CALL FLUSH(stdout)
			END IF

			END FUNCTION is_inf

			FUNCTION checkfield(field,str) RESULT(mlend)

			USE fourier_grid

			use prec_const
			IMPLICIT NONE

			COMPLEX(dp), DIMENSION(ikrs:ikre,ikzs:ikze), INTENT(IN) :: field
			CHARACTER(LEN=*), INTENT(IN) :: str
			LOGICAL :: mlend
			COMPLEX(dp) :: sumfield

			sumfield=SUM(field)

			mlend= is_nan( REAL(sumfield),str).OR.is_inf( REAL(sumfield),str) &
			.OR. is_nan(AIMAG(sumfield),str).OR.is_inf(AIMAG(sumfield),str)
			END FUNCTION checkfield

			END MODULE utility