[Scilab-users] Problems arising from truncation of %pi

[Samuel Gougeon]

Le 09/01/2021 à 13:04, Samuel Gougeon a écrit :
> Hello Federico,
>
> Le 09/01/2021 à 01:32, Federico Miyara a écrit :
>>
>> Jean-Yves,
>>
>>>> sin(x - n*pi)
>>> So now the problem can be how these large numbers are obtained
>>> --> a=1e16+1
>>> --> a-1e16
>>> of course equals zero.
>>
>> Yes, I've thought about it and you are right, above 1e16 x is so 
>> sparse, cycle-wise speaking, that my original intention doesn't make 
>> much sense.
>
>
> MPScilab <https://atoms.scilab.org/toolboxes/MPScilab> is an external 
> module available up to Scilab 5.3 -- not recompiled since then -- 
> allowing *arbitrary precision computations* for a short list 
> <http://forge.scilab.org/index.php/p/mpscilab/source/tree/master/mpscilab/help/en_US> 
> of the mathematical functions.
> sin() is not in the list, but exp() is.
>
Sorry: all trigonometric functions are supported. I have just missed the 
dedicated section where they are addressed.

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