Matlab diag emulation function
Matlab and Scilab diag behave differently in some particular cases:
The function y = mtlb_diag(x[,dim]) is used by mfile2sci to replace y = diag(x[,dim]) when it was not possible to know what were the inputs while porting Matlab code to Scilab. This function will determine the correct semantic at run time. If you want to have a more efficient code it is possible to replace mtlb_diag calls:
Caution: mtlb_diag has not to be used for hand coded functions.