DRSCL (3lapack)

multiplie an n-element real vector x by the real scalar 1/a

SYNOPSIS

  SUBROUTINE DRSCL( N, SA, SX, INCX )

      INTEGER       INCX, N

      DOUBLE        PRECISION SA

      DOUBLE        PRECISION SX( * )

PURPOSE

  DRSCL multiplies an n-element real vector x by the real scalar 1/a.  This
  is done without overflow or underflow as long as
  the final result x/a does not overflow or underflow.

ARGUMENTS

  N       (input) INTEGER
          The number of components of the vector x.

  SA      (input) DOUBLE PRECISION
          The scalar a which is used to divide each component of x.  SA must
          be >= 0, or the subroutine will divide by zero.

  SX      (input/output) DOUBLE PRECISION array, dimension
          (1+(N-1)*abs(INCX)) The n-element vector x.

  INCX    (input) INTEGER
          The increment between successive values of the vector SX.  > 0:
          SX(1) = X(1) and SX(1+(i-1)*INCX) = x(i),     1< i<= n