> On 30 Mar 2023, at 18:11, Barry Scott <ba...@barrys-emacs.org> wrote:
>
>
>
>> On 30 Mar 2023, at 10:15, Andreas Eisele <andreas.eis...@gmail.com> wrote:
>>
>> I sometimes make use of the fact that the built-in pow() function has an
>> optional third argument for modulo calculation, which is handy when dealing
>> with tasks from number theory, very large numbers, problems from Project
>> Euler, etc. I was unpleasantly surprised that math.pow() does not have this
>> feature, hence "from math import *" overwrites the built-in pow() function
>> with a function that lacks functionality. I am wondering for the rationale
>> of this. Does math.pow() do anything that the built-in version can not do,
>> and if not, why is it even there?
>
> Maybe math.pow() aways using IEEE 754(?) float point via the C runtime math
> routines.
> pow() will give int answer if called with int args.
And the C version of pow only supports 2 arg call.
SYNOPSIS
#include <math.h>
double
pow(double x, double y);
long double
powl(long double x, long double y);
float
powf(float x, float y);
>
> Barry
>
>
>> Thanks in advance for any enlightening comment on this.
>> Best regards, Andreas
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