function r = power(obj1,obj2)% POSYNOMIAL/POWER  Implements '.^' for posynomials.%if( ~isnumeric(obj2) )  error('The exponent in the power must be a numerical value.');endsz1 = size(obj1); sz2 = size(obj2);if( length(obj2) ~= 1 ) % the exponent is not a scalar  if( sz1(1) ~= sz2(1) || sz1(2) ~= sz2(2))    error(['Cannot apply pointwise power to vectors or matrices ' ...           'with incompatible dimensions' char(10) ...           '(if the power is not scalar).'])  endend% take the pointwise power with a posynomial and a scalar (to get a gposy)if( length(obj1) == 1 & length(obj2) == 1 )  r = obj1^obj2;  return;end% pointwise power of a posynomial vector (or matrix) and scalar powerif( length(obj2) == 1 )  for i = 1:sz1(1)    for j = 1:sz1(2)      r(i,j) = obj1(i,j)^obj2;    end  end  return;end% pointwise power of a posynomial vector and a scalar vectorif( sz1(1) == 1 & sz2(1) == 1 )  for k = 1:sz1(2)    r(1,k) = obj1(1,k)^obj2(1,k);  end  return;endif( sz1(2) == 1 & sz2(2) == 1 )  for k = 1:sz1(1)    r(k,1) = obj1(k,1)^obj2(k,1);  end  return;end% pointwise power of matrices (one has posynomials and the other scalars)for i = 1:sz1(1)  for j = 1:sz1(2)    r(i,j) = obj1(i,j)^obj2(i,j);  endend