SLASCL (3lapack)

multiplie the M by N real matrix A by the real scalar CTO/CFROM

SYNOPSIS

  SUBROUTINE SLASCL( TYPE, KL, KU, CFROM, CTO, M, N, A, LDA, INFO )

      CHARACTER      TYPE

      INTEGER        INFO, KL, KU, LDA, M, N

      REAL           CFROM, CTO

      REAL           A( LDA, * )

PURPOSE

  SLASCL multiplies the M by N real matrix A by the real scalar CTO/CFROM.
  This is done without over/underflow as long as the final result
  CTO*A(I,J)/CFROM does not over/underflow. TYPE specifies that A may be
  full, upper triangular, lower triangular, upper Hessenberg, or banded.

ARGUMENTS

  TYPE    (input) CHARACTER*1
          TYPE indices the storage type of the input matrix.  = 'G':  A is a
          full matrix.
          = 'L':  A is a lower triangular matrix.
          = 'U':  A is an upper triangular matrix.
          = 'H':  A is an upper Hessenberg matrix.
          = 'B':  A is a symmetric band matrix with lower bandwidth KL and
          upper bandwidth KU and with the only the lower half stored.  = 'Q':
          A is a symmetric band matrix with lower bandwidth KL and upper
          bandwidth KU and with the only the upper half stored.  = 'Z':  A is
          a band matrix with lower bandwidth KL and upper bandwidth KU.

  KL      (input) INTEGER
          The lower bandwidth of A.  Referenced only if TYPE = 'B',

  KU      (input) INTEGER
          The upper bandwidth of A.  Referenced only if TYPE = 'B',

  CFROM   (input) REAL
          CTO     (input) REAL The matrix A is multiplied by CTO/CFROM.
          A(I,J) is computed without over/underflow if the final result
          CTO*A(I,J)/CFROM can be represented without over/underflow.  CFROM
          must be nonzero.

  M       (input) INTEGER
          The number of rows of the matrix A.  M >= 0.

  N       (input) INTEGER
          The number of columns of the matrix A.  N >= 0.

  A       (input/output) REAL array, dimension (LDA,M)
          The matrix to be multiplied by CTO/CFROM.  See TYPE for the storage
          type.

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

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