HP MLIB User's Guide Vol. 2 7th Ed.

Chapter 15 Sparse Eigenvalues and Eigenvectors 1067

Matrix value input by single entry DSEVV1

ier = −401 Error in dynamic storage allocation.

ier = −402 Subscript pair (irow, jcol) is not in

lower triangle of matrix.

ier = −403 Illegal value for matrix designator.

ier = −404 Subscript pair (irow, jcol) was not

speciﬁed in structure input. No room

for value.

ier = −405 The B matrix was speciﬁed as

diagonal. Cannot add off-diagonal

nonzero value.

ier = −406 The B matrix was speciﬁed as an

identity matrix. Cannot add nonzero

value.

Notes Calls to DSEVV1, DSEVVC, DSEVVD, DSEVVE, and DSEVVM can be

intermixed.

Actual character arguments in a subroutine call may be longer than

corresponding dummy arguments. Therefore, readability of the CALL

statement may be improved by coding the matrix argument as ’addleft’.

Example Store the value 4.523×10

−5

as the nonzero entry in row 3035, column 1024 of

the matrix A.

INTEGER*4 I,J,IER

REAL*8 VALUE,GLOBAL(150)

I = 3035

J = 1024

VALUE = 4.523D-5

CALL DSEVV1 (’A’,I,J,VALUE,GLOBAL,IER)

IF ( IER .NE. 0 ) THEN

handle error condition

ENDIF