SSORT

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C      P A C K A G E  :   SSORT
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C     SSORT IS A SUBROUTINE FOR THE FAST IN CORE SORTING OF REAL ARRAYS
C           A MODIFICATION OF THE "QUICKSORT" ALGORITHM IS USED.
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C           SORTING MAY BE EITHER LARGEST FIRST, OR SMALLEST FIRST
C           ALSO, ONE ADDITIONAL ARRAY CAN BE CARRIED ALONG WHILE THE
C           SORTING IS TAKING PLACE.
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C     ISORT IS A SIMILAR ROUTINE FOR SORTING OF INTEGER ARRAYS
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C     CSORT IS A SIMILAR ROUTINE FOR SORTING OF AN ARRAY OF STRINGS
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