1ZLAUU2(1)           LAPACK auxiliary routine (version 3.2)           ZLAUU2(1)
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NAME

6       ZLAUU2  -  computes  the product U * U' or L' * L, where the triangular
7       factor U or L is stored in the upper or lower triangular  part  of  the
8       array A
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SYNOPSIS

11       SUBROUTINE ZLAUU2( UPLO, N, A, LDA, INFO )
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13           CHARACTER      UPLO
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15           INTEGER        INFO, LDA, N
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17           COMPLEX*16     A( LDA, * )
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PURPOSE

20       ZLAUU2 computes the product U * U' or L' * L, where the triangular fac‐
21       tor U or L is stored in the upper or lower triangular part of the array
22       A.   If  UPLO  =  'U'  or  'u' then the upper triangle of the result is
23       stored, overwriting the factor U in A.
24       If UPLO = 'L' or 'l' then the lower triangle of the result  is  stored,
25       overwriting the factor L in A.
26       This is the unblocked form of the algorithm, calling Level 2 BLAS.
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ARGUMENTS

29       UPLO    (input) CHARACTER*1
30               Specifies  whether  the triangular factor stored in the array A
31               is upper or lower triangular:
32               = 'U':  Upper triangular
33               = 'L':  Lower triangular
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35       N       (input) INTEGER
36               The order of the triangular factor U or L.  N >= 0.
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38       A       (input/output) COMPLEX*16 array, dimension (LDA,N)
39               On entry, the triangular factor U or L.  On  exit,  if  UPLO  =
40               'U', the upper triangle of A is overwritten with the upper tri‐
41               angle of the product U * U'; if UPLO = 'L', the lower  triangle
42               of A is overwritten with the lower triangle of the product L' *
43               L.
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45       LDA     (input) INTEGER
46               The leading dimension of the array A.  LDA >= max(1,N).
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48       INFO    (output) INTEGER
49               = 0: successful exit
50               < 0: if INFO = -k, the k-th argument had an illegal value
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54 LAPACK auxiliary routine (versionNo3v.e2m)ber 2008                       ZLAUU2(1)
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