claset(3S)

NAME
     CLASET - initialize a 2-D array A to BETA on the diagonal and ALPHA on
     the offdiagonals

SYNOPSIS
     SUBROUTINE CLASET( UPLO, M, N, ALPHA, BETA, A, LDA )

         CHARACTER      UPLO

         INTEGER        LDA, M, N

         COMPLEX        ALPHA, BETA

         COMPLEX        A( LDA, * )

IMPLEMENTATION
     These routines are part of the SCSL Scientific Library and can be loaded
     using either the -lscs or the -lscs_mp option.  The -lscs_mp option
     directs the linker to use the multi-processor version of the library.

     When linking to SCSL with -lscs or -lscs_mp, the default integer size is
     4 bytes (32 bits). Another version of SCSL is available in which integers
     are 8 bytes (64 bits).  This version allows the user access to larger
     memory sizes and helps when porting legacy Cray codes.  It can be loaded
     by using the -lscs_i8 option or the -lscs_i8_mp option. A program may use
     only one of the two versions; 4-byte integer and 8-byte integer library
     calls cannot be mixed.

PURPOSE
     CLASET initializes a 2-D array A to BETA on the diagonal and ALPHA on the
     offdiagonals.

ARGUMENTS
     UPLO    (input) CHARACTER*1
             Specifies the part of the matrix A to be set.  = 'U':      Upper
             triangular part is set. The lower triangle is unchanged.  = 'L':
             Lower triangular part is set. The upper triangle is unchanged.
             Otherwise:  All of the matrix A is set.

     M       (input) INTEGER
             On entry, M specifies the number of rows of A.

     N       (input) INTEGER
             On entry, N specifies the number of columns of A.

     ALPHA   (input) COMPLEX
             All the offdiagonal array elements are set to ALPHA.

     BETA    (input) COMPLEX
             All the diagonal array elements are set to BETA.
     A       (input/output) COMPLEX array, dimension (LDA,N)
             On entry, the m by n matrix A.  On exit, A(i,j) = ALPHA, 1 <= i
             <= m, 1 <= j <= n, i.ne.j; A(i,i) = BETA , 1 <= i <= min(m,n)

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

SEE ALSO
     INTRO_LAPACK(3S), INTRO_SCSL(3S)

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