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

664 HP MLIB LAPACK User’s Guide
SLANGT/DLANGT/CLANGT/ZLANGT Compute norm of general tridiagonal matrix
CHARACTER*1 norm
INTEGER*4 n
REAL*8 d(n), dl(n−1), du(n−1)
REAL*8 anorm, DLANGT
anorm = DLANGT(norm, n, dl, d, du)
CHARACTER*1 norm
INTEGER*4 n
COMPLEX*8 d(n), dl(n−1), du(n−1)
REAL*4 anorm, CLANGT
anorm = CLANGT(norm, n, dl, d, du)
CHARACTER*1 norm
INTEGER*4 n
COMPLEX*16 d(n), dl(n−1), du(n−1)
REAL*8 anorm, ZLANGT
anorm = ZLANGT(norm, n, dl, d, du)
LAPACK8:
CHARACTER*1 norm
INTEGER*8 n
REAL*4 d(n), dl(n−1), du(n−1)
REAL*4 anorm, SLANGT
anorm = SLANGT(norm, n, dl, d, du)
CHARACTER*1 norm
INTEGER*8 n
REAL*8 d(n), dl(n−1), du(n−1)
REAL*8 anorm, DLANGT
anorm = DLANGT(norm, n, dl, d, du)
CHARACTER*1 norm
INTEGER*8 n
COMPLEX*8 d(n), dl(n−1), du(n−1)
REAL*4 anorm, CLANGT
anorm = CLANGT(norm, n, dl, d, du)
CHARACTER*1 norm
INTEGER*8 n
COMPLEX*16 d(n), dl(n−1), du(n−1)
REAL*8 anorm, ZLANGT
anorm = ZLANGT(norm, n, dl, d, du)
Input norm Specifies which norm is to be computed, as follows: