strttp.f man page

strttp.f

Synopsis

Functions/Subroutines

subroutine strttp (UPLO, N, A, LDA, AP, INFO)
STRTTP copies a triangular matrix from the standard full format (TR) to the standard packed format (TP).

Function/Subroutine Documentation

subroutine strttp (character UPLO, integer N, real, dimension( lda, * ) A, integer LDA, real, dimension( * ) AP, integer INFO)

STRTTP copies a triangular matrix from the standard full format (TR) to the standard packed format (TP).  

Purpose:

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

UPLO

          UPLO is CHARACTER*1
          = 'U':  A is upper triangular.
          = 'L':  A is lower triangular.

N

          N is INTEGER
          The order of the matrices AP and A.  N >= 0.

A

          A is REAL array, dimension (LDA,N)
          On exit, 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.

LDA

          LDA is INTEGER
          The leading dimension of the array A.  LDA >= max(1,N).

AP

          AP is REAL array, dimension (N*(N+1)/2)
          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.

INFO

          INFO is INTEGER
          = 0:  successful exit
          < 0:  if INFO = -i, the i-th argument had an illegal value
Author:

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Date:

June 2017

Definition at line 106 of file strttp.f.

Author

Generated automatically by Doxygen for LAPACK from the source code.

Referenced By

The man page strttp(3) is an alias of strttp.f(3).

Tue Nov 14 2017 Version 3.8.0 LAPACK