No check on uniform()

[Guillaume Laurens (Airbus)]

In .sc files, uniform() can work better :

• uniform(var, 1, 3) give 1, 2 or 3 ok
• uniform(var, 1, 2) give always 1 !
• uniform(var, 0, 2) give always 1 !
• uniform(var, 2, 3) give 1, 2, 3 !
• When using bad code, no check : uniform(var, -2, 3) -> raised STORAGE_ERROR : heap exhausted.

To fix this bug, a new implementation of the uniform random generator is provided. Do not forget that the accurancy of the value distribution (which should be uniform !) depends of :

• the number of random generation (the more you fire random values, the more you get an accurate distribution).
• the range of the expected values (uniform distribution will be better if the range is large !). By range, we mean the value "b-a" in the case of the statement "uniform(var,a,b);"