How to make Python run as fast (or faster) than Julia

[bartc]

On 26/02/2018 17:05, Ben Bacarisse wrote:
> bartc <bc at freeuk.com> writes:
> 
>> A C version is given below. (One I may have messed around with, which
>> I'm not sure works properly. For an original, google for Marsaglia and
>> KISS64 or SUPRKISS64.)
> 
> The version I know uses unsigned integers.  Did you change then to signed?

Yeah, I don't know what I was doing with that version.

> For a Python version, go back to the original C and work from there.

The original C makes confusing use of macros and comma operators.

A version without macros or comma expressions is here (tweaked from 
generated C):

   https://pastebin.com/raw/k4jFK5TN

This runs the 1-billion loop in 6 seconds.

-- 
bartc