slauum(l) [redhat man page]

SLAUUM(l)								 )								 SLAUUM(l)

NAME

       SLAUUM  -  compute  the product U * U' or L' * L, where the triangular factor U or L is stored in the upper or lower triangular part of the
       array A

SYNOPSIS

       SUBROUTINE SLAUUM( UPLO, N, A, LDA, INFO )

	   CHARACTER	  UPLO

	   INTEGER	  INFO, LDA, N

	   REAL 	  A( LDA, * )

PURPOSE

       SLAUUM computes the product U * U' or L' * L, where the triangular factor U or L is stored in the upper or lower  triangular  part  of  the
       array A.  If UPLO = 'U' or 'u' then the upper triangle of the result is stored, overwriting the factor U in A.
       If UPLO = 'L' or 'l' then the lower triangle of the result is stored, overwriting the factor L in A.

       This is the blocked form of the algorithm, calling Level 3 BLAS.

ARGUMENTS

       UPLO    (input) CHARACTER*1
	       Specifies whether the triangular factor stored in the array A is upper or lower triangular:
	       = 'U':  Upper triangular
	       = 'L':  Lower triangular

       N       (input) INTEGER
	       The order of the triangular factor U or L.  N >= 0.

       A       (input/output) REAL array, dimension (LDA,N)
	       On  entry, the triangular factor U or L.  On exit, if UPLO = 'U', the upper triangle of A is overwritten with the upper triangle of
	       the product U * U'; if UPLO = 'L', the lower triangle of A is overwritten with the lower triangle of the product L' * L.

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

       INFO    (output) INTEGER
	       = 0: successful exit
	       < 0: if INFO = -k, the k-th argument had an illegal value

LAPACK version 3.0						   15 June 2000 							 SLAUUM(l)

slauum.f(3)							      LAPACK							       slauum.f(3)

NAME

       slauum.f -

SYNOPSIS

   Functions/Subroutines
       subroutine slauum (UPLO, N, A, LDA, INFO)
	   SLAUUM computes the product UUH or LHL, where U and L are upper or lower triangular matrices (blocked algorithm).

Function/Subroutine Documentation
   subroutine slauum (characterUPLO, integerN, real, dimension( lda, * )A, integerLDA, integerINFO)
       SLAUUM computes the product UUH or LHL, where U and L are upper or lower triangular matrices (blocked algorithm).

       Purpose:

	    SLAUUM computes the product U * U**T or L**T * L, where the triangular
	    factor U or L is stored in the upper or lower triangular part of
	    the array A.

	    If UPLO = 'U' or 'u' then the upper triangle of the result is stored,
	    overwriting the factor U in A.
	    If UPLO = 'L' or 'l' then the lower triangle of the result is stored,
	    overwriting the factor L in A.

	    This is the blocked form of the algorithm, calling Level 3 BLAS.

       Parameters:
	   UPLO

		     UPLO is CHARACTER*1
		     Specifies whether the triangular factor stored in the array A
		     is upper or lower triangular:
		     = 'U':  Upper triangular
		     = 'L':  Lower triangular

	   N

		     N is INTEGER
		     The order of the triangular factor U or L.  N >= 0.

	   A

		     A is REAL array, dimension (LDA,N)
		     On entry, the triangular factor U or L.
		     On exit, if UPLO = 'U', the upper triangle of A is
		     overwritten with the upper triangle of the product U * U**T;
		     if UPLO = 'L', the lower triangle of A is overwritten with
		     the lower triangle of the product L**T * L.

	   LDA

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

	   INFO

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

       Author:
	   Univ. of Tennessee

	   Univ. of California Berkeley

	   Univ. of Colorado Denver

	   NAG Ltd.

       Date:
	   September 2012

       Definition at line 103 of file slauum.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

Version 3.4.2							  Tue Sep 25 2012						       slauum.f(3)