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.

N

          N is INTEGER


          The number of components of the vector x.

SA

          SA is 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

          SX is DOUBLE PRECISION array, dimension


                         (1+(N-1)*abs(INCX))


          The n-element vector x.

INCX

          INCX is 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

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November 2017