SLATEC Routines --- IPLOC ---

*DECK IPLOC
      INTEGER FUNCTION IPLOC (LOC, SX, IX)
C***BEGIN PROLOGUE  IPLOC
C***SUBSIDIARY
C***PURPOSE  Subsidiary to SPLP
C***LIBRARY   SLATEC
C***TYPE      SINGLE PRECISION (IPLOC-S, IDLOC-D)
C***KEYWORDS  RELATIVE ADDRESS DETERMINATION FUNCTION, SLATEC
C***AUTHOR  Hanson, R. J., (SNLA)
C           Wisniewski, J. A., (SNLA)
C***DESCRIPTION
C
C   Given a "virtual" location,  IPLOC returns the relative working
C   address of the vector component stored in SX, IX.  Any necessary
C   page swaps are performed automatically for the user in this
C   function subprogram.
C
C   LOC       is the "virtual" address of the data to be retrieved.
C   SX ,IX    represent the matrix where the data is stored.
C
C***SEE ALSO  SPLP
C***ROUTINES CALLED  PRWPGE, XERMSG
C***REVISION HISTORY  (YYMMDD)
C   810306  DATE WRITTEN
C   890531  Changed all specific intrinsics to generic.  (WRB)
C   890606  Restructured to match double precision version.  (WRB)
C   890606  REVISION DATE from Version 3.2
C   891214  Prologue converted to Version 4.0 format.  (BAB)
C   900315  CALLs to XERROR changed to CALLs to XERMSG.  (THJ)
C   910731  Added code to set IPLOC to 0 if LOC is non-positive.  (WRB)
C***END PROLOGUE  IPLOC