lshift_s128      2381 src/dps8/dps8_math.c   m3h = lshift_s128 (m3h, 1); // m3h is hi by 64, align it for addition. The result is 135 bits so this cannot overflow.
lshift_s128        50 src/dps8/dps8_math128.h int128 lshift_s128 (int128 a, unsigned int n);