CSSCAL(3) BLAS routine of NEC Numeric Library Collection CSSCAL(3)
NAME
CSSCAL - BLAS level one, Scales a complex vector
SYNOPSIS
SUBROUTINE CSSCAL ( n, alpha, x, incx )
INTEGER n, incx
COMPLEX x
REAL alpha
DESCRIPTION
CSSCAL scales a complex vector with a real scalar. CSSCAL scales the
vector x of length n and increment incx by the constant alpha.
Ths routine performs the following vector operation:
x <-- alpha x
where alpha is a real scalar, and x is a complex
vector.
ARGUMENTS
n INTEGER. (input)
Number of elements in the vector.
If n <= 0, this routine returns without computation.
alpha REAL. (input)
Value used to scale vector
x COMPLEX. (input and output)
Array of dimension (n-1) * abs(incx) + 1. Vector to be scaled.
incx INTEGER. (input)
Increment between elements of x.
If incx = 0, the results will be unpredictable.
NOTES
This routine is Level 1 Basic Linear Algebra Subprograms (Level 1
BLAS).
When working backward (incx < 0 or incy < 0), each routine starts at
the end of the vector and moves backward, as follows:
x(1-incx * (n-1)), x(1-incx * (n-2)), ..., x(1)
BLAS routine CSSCAL(3)