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dlascl examples
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Man Page Details
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NAME
       DLASCL - the M by N real matrix A by the real scalar CTO/CFROM

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

           CHARACTER      TYPE

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

           DOUBLE         PRECISION CFROM, CTO

           DOUBLE         PRECISION A( LDA, * )

 Purpose
 =======

  DLASCL 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',
          'Q' or 'Z'.

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

  CFROM   (input) DOUBLE PRECISION
  CTO     (input) DOUBLE PRECISION
          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) DOUBLE PRECISION 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.

