minor noises made by gcc and -std=iso9899:1999 with -Wall -pedantic -Wextra -pedantic-errors

[Dennis Clarke]

On 7/1/19 8:40 AM, Torbjörn Granlund wrote:
> Vincent Lefevre <vincent at vinc17.net> writes:
> 
>    However the GMP code is poorly written.
> 
>      mp_size_t n = 1 + (2 * an >= 3 * bn ? (an - 1) / (size_t) 3 : (bn - 1) >> 1);
> 
>    What's the point of the cast to size_t?
> 
> It is a slight performance optimisation.
> 
>    Moreover, GMP favors signed arithmetic with a signed type mp_size_t,
>    thus artificially switching to unsigned arithmetic with this cast is
>    a bad idea.
> 
> Why?  We have full control of the ranges of the involved variables.
> 

Well the objective here was that I was attempting to drag gmpbench into
the C99 compliance and for that purpose I had built gmp into /opt/bw
with strict c99 flags etc etc.

Seems to work thus far : https://github.com/blastwave/gmpbench_c99

See verbose readme there.


-- 
Dennis Clarke
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UNIX and Linux spoken
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