 
      SUBROUTINE SSPSL(AP,N,KPVT,B)
C***BEGIN PROLOGUE  SSPSL
C***DATE WRITTEN   780814   (YYMMDD)
C***REVISION DATE  820801   (YYMMDD)
C***CATEGORY NO.  D2B1A
C***KEYWORDS  LINEAR ALGEBRA,LINPACK,MATRIX,PACKED,SOLVE,SYMMETRIC
C***AUTHOR  BUNCH, J., (UCSD)
C***PURPOSE  Solves the real SYMMETRIC system A*X=B using factors from
C            SSPFA
C***DESCRIPTION
C
C     SSISL solves the real symmetric system
C     A * X = B
C     using the factors computed by SSPFA.
C
C     On Entry
C
C        AP      REAL(N*(N+1)/2)
C                the output from SSPFA.
C
C        N       INTEGER
C                the order of the matrix  A .
C
C        KPVT    INTEGER(N)
C                the pivot vector from SSPFA.
C
C        B       REAL(N)
C                the right hand side vector.
C
C     On Return
C
C        B       the solution vector  X .
C
C     Error Condition
C
C        A division by zero may occur if  SSPCO  has set RCOND .EQ. 0.0
C        or  SSPFA  has set INFO .NE. 0  .
C
C     To compute  INVERSE(A) * C  where  C  is a matrix
C     with  P  columns
C           CALL SSPFA(AP,N,KPVT,INFO)
C           IF (INFO .NE. 0) GO TO ...
C           DO 10 J = 1, P
C              CALL SSPSL(AP,N,KPVT,C(1,J))
C        10 CONTINUE
C
C     LINPACK.  This version dated 08/14/78 .
C     James Bunch, Univ. Calif. San Diego, Argonne Nat. Lab.
C
C     Subroutines and Functions
C
C     BLAS SAXPY,SDOT
C     Fortran IABS
C***REFERENCES  DONGARRA J.J., BUNCH J.R., MOLER C.B., STEWART G.W.,
C                 *LINPACK USERS  GUIDE*, SIAM, 1979.
C***ROUTINES CALLED  SAXPY,SDOT
C***END PROLOGUE  SSPSL
 
 
