ZLAIPD
Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd..
November 2006
November 2006
Purpose
ZLAIPD sets the imaginary part of the diagonal elements of a complex
matrix A to a large value. This is used to test LAPACK routines for
complex Hermitian matrices, which are not supposed to access or use
the imaginary parts of the diagonals.
matrix A to a large value. This is used to test LAPACK routines for
complex Hermitian matrices, which are not supposed to access or use
the imaginary parts of the diagonals.
Arguments
| N |
(input) INTEGER
The number of diagonal elements of A.
|
| A |
(input/output) COMPLEX*16 array, dimension
(1+(N-1)*INDA+(N-2)*VINDA)
On entry, the complex (Hermitian) matrix A. On exit, the imaginary parts of the diagonal elements are set to BIGNUM = EPS / SAFMIN, where EPS is the machine epsilon and SAFMIN is the safe minimum. |
| INDA |
(input) INTEGER
The increment between A(1) and the next diagonal element of A.
Typical values are = LDA+1: square matrices with leading dimension LDA = 2: packed upper triangular matrix, starting at A(1,1) = N: packed lower triangular matrix, starting at A(1,1) |
| VINDA |
(input) INTEGER
The change in the diagonal increment between columns of A.
Typical values are = 0: no change, the row and column increments in A are fixed = 1: packed upper triangular matrix = -1: packed lower triangular matrix |