Notes for SCAL

1. Performs $x \leftarrow \alpha x$
2. An index file input line looks like:

   <ID> <alpha> <incX> <source file> <author name>
   

3. If alpha is zero, the ATLAS internal routine ATL_set is called.
4. For complex, if incX == 1, and the imaginary component of alpha is zero, the real routine is called with N*2.
5. The incX == 2, alpha == -1.0 real cases can be used for complex conjugation.