fix2(a, n)

function b = fix2(a, n)
%FIX2 Round to a specified number of decimals towards zero.
%
%   FIX2(A) returns the same as FIX(A).
%   Y = FIX2(A, N) fixes the elements of A to decimals specified in N.
%
%   See also: FIX, FLOOR, CEIL, ROUND, ROUND2.


% simpler case(round towards nearest integers)
if nargin < 2 || ~any(n) || isempty(a)
    b = fix(a); return
end

% general case(round to n decimals )
if ~isscalar(a) && ~isscalar(n) && ~isequal(size(a),size(n))
    error('Non-scalar inputs must be the same size')
end
t2n = 10.^floor(n);
b = fix(a.*t2n)./t2n;