wrapper matlab : doc latex + test

gen_doc/LaTeX/chapFirstUse.tex

@@ -26,12 +26,16 @@ As much as possible, a \textbf{matlab{\_}faust} object is handled as a normal ma
 >> y2 = A'*x2;
 >>
 >>
+>> % get the 2-norm (spectral norm) of the faust A
+>> norm_A = norm(A); % equivalent to norm(A,2);
+>>
 >> % get the coefficient i,j and slicing for reading purpose
 >> coeff=A(i,j);
 >> col_2=A(:,2);
 >> submatrix_A=A(3:5,2:3);
+>> submatrix_A=A(2:end,3:end-1);
 >> % Warning :  A(i,j)=3 will not modify A, writing is not allowed
->> % Warning :  A(end,end) give the wrong result   
+  
 \end{lstlisting}
 
 

misc/test/src/test_matlab_faust.m

@@ -426,10 +426,19 @@ disp('Ok');
 disp('TEST 2-norm : ');
 real_norm=norm(F_dense);
 norm_faust=norm(F);
+norm_faust2=norm(F,2);
+norm_faust_trans=norm(F_trans);
 
 if (abs(real_norm - norm_faust)>threshold)
 	error(['norm : invalid result, expected ' num2str(real_norm) ' get norm_faust' num2str(norm_faust)]);
 end
+if (norm_faust ~= norm_faust2)
+	error(['norm : norm(F) must be equal to norm(F,2)']);
+end
+
+if (norm_faust_trans ~= norm_faust)
+	error(['norm : norm(F) must be equal to norm(F_trans)']);
+end
 
 disp('Ok');