[Numpy-discussion] adding fused multiply and add to numpy

[Neal Becker]

Charles R Harris wrote:

> On Wed, Jan 8, 2014 at 2:39 PM, Julian Taylor <jtaylor.debian at googlemail.com
>> wrote:
> 
...
> 
> Another function that could be useful is a |a|**2 function, abs2 perhaps.
> 
> Chuck

I use mag_sqr all the time.  It should be much faster for complex, if computed
via:

x.real**2 + x.imag**2

avoiding the sqrt of abs.