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LAPACK version 3.0
slauum(3)

PURPOSE
  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

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

      CHARACTER	     UPLO

      INTEGER	     INFO, LDA, N

      REAL	     A( LDA, * )

DESCRIPTION
  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