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CTRTTP(1) LAPACK routine (version 3.2) CTRTTP(1)

NAME

CTRTTP - copies a triangular matrix A from full format (TR) to standard packed format (TP)

SYNOPSIS

UPLO, N, A, LDA, AP, INFO )

CHARACTER UPLO INTEGER INFO, N, LDA COMPLEX A( LDA, * ), AP( * )

PURPOSE

CTRTTP copies a triangular matrix A from full format (TR) to standard packed format (TP).

ARGUMENTS

= 'U': A is upper triangular;
= 'L': A is lower triangular.
The order of the matrices AP and A. N >= 0.
On entry, the triangular matrix A. If UPLO = 'U', the leading N-by-N upper triangular part of A contains the upper triangular part of the matrix A, and the strictly lower triangular part of A is not referenced. If UPLO = 'L', the leading N-by-N lower triangular part of A contains the lower triangular part of the matrix A, and the strictly upper triangular part of A is not referenced.
The leading dimension of the array A. LDA >= max(1,N).
On exit, the upper or lower triangular matrix A, packed columnwise in a linear array. The j-th column of A is stored in the array AP as follows: if UPLO = 'U', AP(i + (j-1)*j/2) = A(i,j) for 1<=i<=j; if UPLO = 'L', AP(i + (j-1)*(2n-j)/2) = A(i,j) for j<=i<=n.
= 0: successful exit
< 0: if INFO = -i, the i-th argument had an illegal value
November 2008 LAPACK routine (version 3.2)