Man Scilab
mtlb_sum
M2SCI function
mtlb_sum - Matlab sum emulation function
Description
Matlab and Scilab
sum
behave differently in some particular cases:
-
-
-
When called with one input: Matlab
sum
threts the values along the first
non-singleton dimension of input while Scilab
sum
threats all values of input.
-
When called with two inputs: Matlab
sum
can be used with second input giving
a non-existing dimension of first input while Scilab
sum
returns an error message.
The function
mtlb_sum(A[,dim])
is used by
mfile2sci
to replace
sum(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_sum
calls:
-
-
-
When called with one input, if
A
is an empty matrix, a scalar or a vector,
mtlb_sum(A)
may be replaced by
sum(A)
-
When called with one input, if
A
is a not-empty matrix,
mtlb_sum(A)
may be replaced by
sum(A,1)
-
When called with one input, if
A
is a multidimensional array,
mtlb_sum(A)
may be replaced by
sum(A,firstnonsingleton(A))
-
When called with two inputs, if
dim
is lesser than the number of dimensions of
A
mtlb_sum(A,dim)
may be replaced by
sum(A,dim)
Caution:
mtlb_sum
has not to be used for hand coded functions.
See Also
firstnonsingleton
,
Authors
-
V.C.
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