HP MLIB User's Guide Vol. 1 7th Ed.

488 HP MLIB User’s Guide
SCSCSM/DCSCSM/CCSCSM/ZCSCSM Compressed sparse column format triangular solve
val( ) Scalar array of length nnz containing matrix entries.
indx( ) Integer array of length nnz containing row indices.
pntrb( ) Integer array of length k such that pntrb(j) points to
location in val of the first nonzero element in column j.
pntre( ) Integer array of length k such that pntre(j)-1 points to
location in val of the first nonzero element in column j.
b( ) Rectangular array with leading dimension ldb.
ldb Leading dimension of b.
beta Scalar parameter.
c( ) Rectangular arrary with leading dimension ldc.
ldc Leading dimension of c.
work( ) Scratch array of length lwork. lwork should be at least
mb x lb x min(lb, n).
lwork Length of work array.