Function instead of polyval

Is there a Matlab built in function that can be used instead of a polyval function. Or any few lines can work similarly like the polyval function because i dont want to use the polyval function.

Answer 1

[Sean de Wolski]

fnotpolyval = @(p,x)sum(bsxfun(@(x,p)p*x.^(numel(p):-1:1),p',x))

or

fnotpolyval = @(p,x)sum(x'*p,2)'

[Sean de Wolski]

Assumes row vectors for p and x

[Yash]

thanks :)

Answer 2

[Azzi Abdelmalek]

   fval=@(p,x) sum((x.^[length(p)-1:-1:0].*p));
   %example 
   p=[2 4 5 3]; x=2;
   result=fval(p,x)   % fval is your new function

[Yash]

can this be like having the same syntax has the polyval as in the same way i call polyval, over here i have to define the function f in terms of x and then evaluate, i need the syntax in terms of polyval.

[Azzi Abdelmalek]

ok try this

   fval=@(p,x) sum((x.^[length(p)-1:-1:0].*p));
   %example 
   p=[2 4 5 3]; x=2;
   result=fval(p,x)   % fval is your new function

[Yash]

giving error

??? Index exceeds matrix dimensions.

Error in ==> @(p,x)sum((x.^[length(p)-1:-1:0].*p))

[Yash]

thanks but i got it done :)