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

1052 HP MLIB User’s Guide

DSEVIM Matrix structure input by matrix

Output ier Status response:

ier = 0 Normal return.

ier = −100 Incorrect processing path; DSEVIN

not called or matrix input already

ﬁnished.

ier = −101 Error in dynamic storage allocation.

ier = −106 Illegal value for at least one entry in

colstr (not increasing or negative) or

invalid entries in rowind (entries out

of order within a column, or out of the

lower triangle).

ier = −109 Illegal value for matrix designator.

ier = −110 Attempt to add nonzero location to B,

which was not speciﬁed as having a

general sparse structure (B is a

diagonal matrix, an identity matrix,

or has same structure as A).

Notes This is the most efﬁcient mechanism for specifying the nonzero structure, but

the entire matrix structure for both matrices must be input with DSEVIM if it

is used. Its use is not compatible with DSEVI1, DSEVIE, or DSEVIC.

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’.