stat_bonus and stat_malus formulas

[PavelChess]

search.cpp:

// History and stats update bonus, based on depth
int stat_bonus(Depth d) { return std::min(253 * d - 356, 1117); }

// History and stats update malus, based on depth
int stat_malus(Depth d) { return std::min(517 * d - 308, 1206); }

Also possible to do it like this:

const int stat_bonus_Table(5) {-103, 150, 403, 656, 909}

int stat_bonus(Depth d) { return d>5 ? 1117 : stat_bonus_Table(d) ; }

Does this way give speedup because of removing 2 arithmetic operations, especially multiplication , and instead of this getting result from precompiled table?

And in addition, by this way the function may be tuned more accurately then linear formula.