zlaipd.f - Man Page

subroutine zlaipd (n, a, inda, vinda)
ZLAIPD

ZLAIPD

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.

Parameters

N

          N is INTEGER
         The number of diagonal elements of A.

A

          A is 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

          INDA is 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

          VINDA is 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

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 82 of file zlaipd.f.