Scale an array of values with lightning speed
<p>I have an array of double with 12,000 entries.  I need to scale each entry's value by a factor (e.g. 0.3345, or 6.78. whatever).</p>

<p>What I did was to loop each entry and perform the multiplication.  As I am working on an PPC-based 100MHz embedded system, the large number of multiplication calls is slowing it down tremendously.</p>

<p>I there a way to do this faster.  An analogy would be like initializing a block of memory -- one would use memset which is very fast.  I wonder if there is an equivalent method.</p>
