search for: r52936

...for speeding up x^2 has been addressed in an inadvisable way, however. This was a simple addition of four lines of code that speeds up squaring of real vectors by a factor of about six (for vectors of length 10000), by just converting x^2 to x*x. Modifications in the current development version (r52936 and r52937) attempt to address this issue in a different way, but they produce a smaller speedup. My modification is about 2.6 faster than the current development version (on an Intel/Linux system). Similarly, in the current development version, x*x is still about 2.6 times faster than x^2. Furth...