CHISL(3F) CHISL(3F)
CHISL - CHISL solves the complex Hermitian system A * X = B using the
factors computed by CHIFA.
SUBROUTINE CHISL(A,LDA,N,KPVT,B)
On Entry
A COMPLEX(LDA,N)
the output from CHIFA.
LDA INTEGER
the leading dimension of the array A .
N INTEGER
the order of the matrix A . KVPT INTEGER(N)
the pivot vector from CHIFA.
B COMPLEX(N)
the right hand side vector. On Return
B the solution vector X . Error Condition
A division by zero may occur if CHICO has set RCOND .EQ. 0.0 or CHIFA
has set INFO .NE. 0 . To compute INVERSE(A) * C where C is a matrix
with P columns
CALL CHIFA(A,LDA,N,KVPT,INFO)
IF (INFO .NE. 0) GO TO ...
DO 10 J = 1, p
CALL CHISL(A,LDA,N,KVPT,C(1,J)) 10 CONTINUE LINPACK. This version
dated 08/14/78 . James Bunch, Univ. Calif. San Diego, Argonne Nat. Lab.
Subroutines and Functions BLAS CAXPY,CDOTC Fortran CONJG,IABS
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