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163 lines
4.7 KiB
163 lines
4.7 KiB
2 years ago
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C Copyright(C) 1999-2020 National Technology & Engineering Solutions
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C of Sandia, LLC (NTESS). Under the terms of Contract DE-NA0003525 with
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C NTESS, the U.S. Government retains certain rights in this software.
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C
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C See packages/seacas/LICENSE for details
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C=======================================================================
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SUBROUTINE CALTIM (TMIN, TMAX, DELT, NINTV,
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& NSTEPS, TIMES, NPTIMS, IPTIMS)
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C=======================================================================
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C --*** CALTIM *** (TIMSEL) Calculate the selected times
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C -- Written by Amy Gilkey - revised 11/10/87
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C --
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C --CALTIM calculates the selected times based on the time
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C --parameters. The calculation is done only if the number of selected
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C --times is less than 0.
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C --
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C --Parameters:
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C -- TMIN - IN - the minimum selected time
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C -- TMAX - IN - the maximum selected time
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C -- DELT - IN - the interval between selected times
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C -- 0 < - user selected times mode
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C -- 0 = - all available times mode
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C -- 0 > - uniform time interval mode (dependent on NINTV if <> 0)
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C -- NINTV - IN - in user selected times mode, the number of times;
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C -- in uniform time interval mode, negative if zero interval
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C -- NSTEPS - IN - the number of time steps
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C -- TIMES - IN - the database times
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C -- NPTIMS - IN/OUT - the number of selected times; the
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C -- calculation is done only if this is negative
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C -- IPTIMS - IN/OUT - the selected time steps
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C --Routines Called:
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C -- LOCREA - (ETCLIB) Locate closest value
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C -- NUMEQL - (ETCLIB) Count the number of equal values
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REAL TMIN, TMAX, DELT
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INTEGER NINTV
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INTEGER NSTEPS
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REAL TIMES(*)
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INTEGER NPTIMS
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INTEGER IPTIMS(*)
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LOGICAL DOSORT
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IF (NPTIMS .GE. 0) RETURN
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NSTEPX = NSTEPS
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DOSORT = .FALSE.
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IF (NSTEPX .EQ. 0) THEN
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C --Check for no time steps
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NPTIMS = 0
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TMIN = 0.0
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TMAX = 0.0
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DELT = 0.0
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NINTV = 0
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ELSE IF (DELT .GT. 0.0) THEN
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C --Select database time steps between TMIN and TMAX at interval DELT
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IF (TMIN .GT. TMAX) THEN
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NPTIMS = 0
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ELSE IF (TMIN .EQ. TMAX) THEN
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IPTIMS(1) = LOCREA (TMIN, NSTEPS, TIMES)
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NPTIMS = 1
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ELSE
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IF (NINTV .GT. 0) THEN
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IS = 1
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IE = NINTV
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DELT = (TMAX - TMIN) / NINTV
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ELSE IF (NINTV .LT. 0) THEN
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IS = 0
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IE = - NINTV - 1
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IF (NINTV .NE. -1) DELT = (TMAX - TMIN) / (-NINTV-1)
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ELSE
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IS = 0
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TIMMAX = TMAX + 0.01*DELT
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IE = INT ((TIMMAX - TMIN) / DELT)
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END IF
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ILAST = 0
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N = 0
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DO 100 I = IS, IE
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T = TMIN + DELT*I
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ITHIS = LOCREA (T, NSTEPS, TIMES)
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IF (ILAST .NE. ITHIS) THEN
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IWHERE = LOCINT (ITHIS, N, IPTIMS)
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IF (IWHERE .LE. 0) THEN
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N = N + 1
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IPTIMS(N) = ITHIS
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IF (ILAST .GE. ITHIS) DOSORT = .TRUE.
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ILAST = ITHIS
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END IF
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END IF
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100 CONTINUE
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NPTIMS = N
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END IF
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ELSE IF (DELT .EQ. 0.0) THEN
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C --Select all the database time steps between TMIN and TMAX
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N = 0
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ISTIM = LOCREA (TMIN, NSTEPS, TIMES)
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IETIM = LOCREA (TMAX, NSTEPS, TIMES)
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TIMMIN = TIMES(ISTIM)
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TIMMAX = TIMES(IETIM)
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DO 110 ITHIS = 1, NSTEPS
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IF ((TIMES(ITHIS) .GE. TIMMIN)
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& .AND. (TIMES(ITHIS) .LE. TIMMAX)) THEN
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N = N + 1
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IPTIMS(N) = ITHIS
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END IF
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110 CONTINUE
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NPTIMS = N
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ELSE
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C --Select the database time steps nearest a specified list of times
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C --(in IPTIMS)
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ILAST = 0
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DO 120 I = 1, NINTV
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ITHIS = IPTIMS(I)
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IF (ILAST .GE. ITHIS) DOSORT = .TRUE.
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ILAST = ITHIS
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120 CONTINUE
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NPTIMS = NINTV
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END IF
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C --Sort the selected time steps numbers (in IPTIMS)
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IF (DOSORT) THEN
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ILAST = 0
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N = 0
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DO 140 I = 1, NPTIMS
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ITHIS = IPTIMS(I)
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IXTHIS = I
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DO 130 J = I+1, NPTIMS
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IF (IPTIMS(J) .LT. ITHIS) THEN
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ITHIS = IPTIMS(J)
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IXTHIS = J
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END IF
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130 CONTINUE
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IPTIMS(IXTHIS) = IPTIMS(I)
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IF (ILAST .NE. ITHIS) THEN
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N = N + 1
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IPTIMS(N) = ITHIS
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ILAST = ITHIS
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END IF
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140 CONTINUE
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NPTIMS = N
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END IF
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RETURN
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END
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