(1) If there is more than one descendant and, in the event of intestate succession, a gift by the testator or payments of the kind specified in section 2057a would be adjusted among them, the compulsory share of each descendant is determined by what would accrue to the intestate portion, taking into consideration the duties to adjust advancements on the partitioning of the estate. A descendent who has been excluded from intestate succession by renunciation of the inheritance is not included in the calculation.
(2) If the person entitled to a compulsory share is an heir, and if the compulsory share under subsection (1) has a greater value than the share of the inheritance left to them, they may demand from the co-heirs the additional amount as their compulsory share, even if the share of the inheritance left to them is equal to or exceeds one-half of their intestate portion.
(3) The testator may not to the disadvantage of a person entitled to a compulsory share exclude any gift of the kind specified in section 2050 (1) from being taken into account.
(4) If any gift to be taken into account under subsection (1) is at the same time to be deducted from the compulsory share in accordance with section 2315, it is to be counted at one-half of its value.