Re: Conversion of a function/closure with rational coefficients into one with real coefficients

[Bill Allombert <Bill.Allombert@math.u-bordeaux.fr>]

On Thu, Nov 17, 2022 at 01:42:58PM +0100, Gottfried Helms wrote:
> I'm trying to optimize some bivariate function,
> and found, that I can create a vector of polynomials p_r(x).
> Let pp be a vector of closures, so for instance
> 
>  ...
>  pp[4](x) =  1/4*x^2-2/3*x+1/6
>  pp[5](x) = -1/8*x^3+31/48*x^2-7/12*x+1/24
>  ...

Why not write

pp[4] =  1/4*x^2-2/3*x+1/6
pp[5] = -1/8*x^3+31/48*x^2-7/12*x+1/24

and use subst to evaluate pp[i] when needed ?

Cheers,
Bill