spread function off by 1 in negative direction

[tmhglnd]

When using spread() or spreadFloat() to generate a list starting at 0 towards a negative value, the starting value in the output is not 0. For example:

console.log(Gen.spread(6, 0, -6))
//=> [-1, -2, -3, -4, -5, -6]

I need to check the algorithm behind the spread/spreadFloat functions how this can be improved for this specific range.

The output is correct when the spread starts at the negative value:

console.log(Gen.spread(6, -6, 0))
//=> [-6, -5, -4, -3, -2, -1]

The output of spreadInclusive also works correctly in the sense that it starts at the lowest value.

console.log(Gen.spreadInc(6, 0, -5))
//=> [0, -1, -2, -3, -4, -5]