Function abs

be/src/runtime/multi-precision.h:121–121

abs() is not defined for int128_t. Name it abs() so it can be compatible with native int types in templates.

/// abs() is not defined for int128_t. Name it abs() so it can be compatible with
/// native int types in templates.
inline int128_t abs(const int128_t& x) { return (x < 0) ? -x : x; }

/// Get the high and low bits of an int128_t
inline uint64_t HighBits(int128_t x) {