Representation¶

uint128 / int128¶

Stored as two 64-bit limbs: - hi (most significant) - lo (least significant)

Signed int128 is stored in two's complement.

Stores scaled integer: - raw = value * 10^S

Stores magnitude in base 1e9: - mag_[0] is least significant limb - separate scale_ (decimal digits after point) - separate sign flag