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

682 HP MLIB LAPACK User’s Guide
SLANSY/DLANSY/CLANHE/CLANSY/ZLANHE//ZLANSY Compute norm of symmetric or Hermitian matrix
CHARACTER*1 norm, uplo
INTEGER*8 lda, n
REAL*4 rwork(n)
COMPLEX*8 a(lda, n)
REAL*4 anorm, CLANSY
anorm = CLANSY(norm, uplo, n, a, lda, rwork)
CHARACTER*1 norm, uplo
INTEGER*8 lda, n
REAL*8 rwork(n)
COMPLEX*16 a(lda, n)
REAL*8 anorm, ZLANHE
anorm = ZLANHE(norm, uplo, n, a, lda, rwork)
CHARACTER*1 norm, uplo
INTEGER*8 lda, n
REAL*8 rwork(n)
COMPLEX*16 a(lda, n)
REAL*8 anorm, ZLANSY
anorm = ZLANSY(norm, uplo, n, a, lda, rwork)
Input norm Specifies which norm is to be computed, as follows:
norm = ’F’, ’f’, ’E’, or ’e’ Compute ||A||
F
= the Frobenius
norm.
norm = ’I’ or ’i’ Compute ||A||
∞
= maximum
row sum.
norm = ’1’, ’O’, or ’o’ Compute ||A||
1
= maximum
column sum.
norm = ’M’ or ’m’ Compute max(|A
ij
|).
uplo Specifies whether the upper or lower triangular part of
the symmetric or Hermitian matrix A is stored, as
follows:
uplo = ’U’ or ’u’ The upper triangular part of A
is stored.
uplo = ’L’ or ’l’ The lower triangular part of A
is stored.
n The order of the matrix A. n ≥ 0.
a The symmetric or Hermitian matrix A, as follows:
If uplo = ’U’ or ’u’, the leading n-by-n upper triangular
part of a contains the upper triangular part of the