numbase2dec.m : Optimised numerical base2dec

numbase2dec.m

function d = numbase2dec(x,b)
%NUMBASE2DEC Convert base B numerical multivariate array to decimal integer.
%   NUMBASE2DEC(x,B) converts the multivarate array of base B into its 
%   univariate decimal (base 10) equivalent.
%
%   X should be M x Nt representing Nt different length-M base B words.
%
%   Example
%      numbase2dec([2; 1; 2],3) returns 23
%
%   See also NUMDEC2BASE

[m, Nt] = size(x);
z = b.^( (m-1):-1:0 );
d = z*x;