double vs real

[Joseph Rushton Wakeling]

On 05/30/2013 06:45 PM, bearophile wrote:
> Regarding speed in theory double and real
> should give the same, but in practice theory and practice often differ.

In my experience, using real slows things down, though the degree depends on
use-case (mine involves lots of iterations and calculations over different
arrays full of floating-point numbers).