dasum daxpy dcopy ddot dnrm2 drot drotg drotm drotmg dscal dswap

dscal() void dscal ( int  n, double  a, double  x[], int  incx  ) x <- ax (BLAS 1) Purpose This routine scales a vector by a constant. Parameters [in] n Number of elements in input vector. (if n <= 0, returns without computation) [in] a Scalar a. [in,out] x[] Array x[lx] (lx >= 1 + (n - 1)*incx) [in] Input vector x. [out] Scaled vector. (= ax) [in] incx Storage spacing between elements of x. (If incx <= 0, returns without computation) Reference BLAS