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42 lines
1.4 KiB
42 lines
1.4 KiB
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 MINMAX (NPTS, PTS, VMIN, VMAX)
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C=======================================================================
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C --*** MINMAX *** (ETCLIB) Calculate min/max value
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C -- Written by Amy Gilkey - revised 11/10/87
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C --
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C --MINMAX calculates the minimum and maximum of the data.
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C --
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C --Parameters:
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C -- NPTS - IN - the number of points
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C -- PTS - IN - the points
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C -- VMIN, VMAX - OUT - the maximum and maximum value of the points
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INTEGER NPTS
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REAL PTS(*)
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REAL VMIN, VMAX
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VMIN = 1.0E+30
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VMAX = -1.0E+30
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DO 10 I = 1, NPTS
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VMIN = MIN (VMIN, PTS(I))
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VMAX = MAX (VMAX, PTS(I))
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10 CONTINUE
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C ... Check for NaN (Not a Number).
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C NaN is defined to be not equal to any other number including itself
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IF (VMIN .NE. VMIN .OR. VMAX .NE. VMAX) THEN
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CALL PRTERR('WARNING',
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* 'Data in subroutine MINMAX contains "NaN" values. Check Data')
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if (vmin .ne. vmin) vmin = -1.0e30
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if (vmax .ne. vmax) vmax = 1.0e30
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END IF
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RETURN
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END
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