No. This is not a difference in the precision used. Both tools will use double preicsion arithmetic to store all numbers.
Instead, it may be due to the same reason that computations like
0.3 - 0.2 - 0.1
do not yield an exact zero, and other mathematically equivalent sequences of operations may result in a different result.
-0.1 - 0.2 + 0.3
In either case, you should get zero, but neither gave zero, and they were not even the same non-zero.
There may be other causes too. What is the source of this number? How did you enter it? The problem is, MATLAB does not even store EXACTLY that number as a double.
num2str(0.0312194854736328,70)
In fact, what I show above is the actual number stored, when you stuff that number into a double.
