mtlb_cumprod

Description

Matlab and Scilab cumprod behave differently in some particular cases:

• When used with one input (cumprod(A)), Matlab cumprod treats the values along the first non-singleton dimension of A as vectors while Scilab cumprod treats all A values.

• When used with two inputs (cumprod(A,dim)), Matlab tolerates dim to be greater than the number of dimensions of A while Scilab returns an error message in this case.

The function R = mtlb_cumprod(A[,dim]) is used by mfile2sci to replace cumprod(A[,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_cumprod calls:

• If dim is less equal to the number of dimensions of A R = mtlb_cumprod(A,dim) may be replaced by R = cumprod(A,dim)

• If dim is greater than then number of dimensions of A R = mtlb_cumprod(A,dim) may be replaced by R = A.

Caution: mtlb_cumprod has not to be used for hand coded functions.

See also

• firstnonsingleton — Finds first dimension which is not 1