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SUBROUTINE ILACPY( UPLO, M, N, A, LDA, B, LDB )
*
* -- ScaLAPACK tools routine (version 1.7) --
* University of Tennessee, Knoxville, Oak Ridge National Laboratory,
* and University of California, Berkeley.
* May 1, 1997
*
* .. Scalar Arguments ..
CHARACTER UPLO
INTEGER LDA, LDB, M, N
* ..
* .. Array Arguments ..
INTEGER A( LDA, * ), B( LDB, * )
* ..
*
* Purpose
* =======
*
* ILACPY copies all or part of a local array A to another array B.
*
* Arguments
* =========
*
* UPLO (local input) CHARACTER*1
* Specifies the part of the array A to be copied to B.
* = 'U': Upper triangular part
* = 'L': Lower triangular part
* Otherwise: All of the array A
*
* M (local input) INTEGER
* The number of rows of the array A. M >= 0.
*
* N (local input) INTEGER
* The number of columns of the array A. N >= 0.
*
* A (local input) INTEGER
* Array, dimension (LDA,N), the m by n array A.
* If UPLO = 'U', only the upper triangle or trapezoid is
* accessed; if UPLO = 'L', only the lower triangle or trapezoid
* is accessed.
*
* LDA (local input) INTEGER
* The leading dimension of the array A. LDA >= max(1,M).
*
* B (local output) INTEGER
* Array, dimension (LDB,N), on exit, B = A in the locations
* specified by UPLO.
*
* LDB (local input) INTEGER
* The leading dimension of the array B. LDB >= max(1,M).
*
* =====================================================================
*
* .. Local Scalars ..
INTEGER I, J
* ..
* .. External Functions ..
LOGICAL LSAME
EXTERNAL LSAME
* ..
* .. Intrinsic Functions ..
INTRINSIC MIN
* ..
* .. Executable Statements ..
*
IF( LSAME( UPLO, 'U' ) ) THEN
DO 20 J = 1, N
DO 10 I = 1, MIN( J, M )
B( I, J ) = A( I, J )
10 CONTINUE
20 CONTINUE
ELSE IF( LSAME( UPLO, 'L' ) ) THEN
DO 40 J = 1, N
DO 30 I = J, M
B( I, J ) = A( I, J )
30 CONTINUE
40 CONTINUE
ELSE
DO 60 J = 1, N
DO 50 I = 1, M
B( I, J ) = A( I, J )
50 CONTINUE
60 CONTINUE
END IF
RETURN
*
* End of ILACPY
*
END
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