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#pragma once
#include <util/system/defaults.h>
namespace NYson {
////////////////////////////////////////////////////////////////////////////////
//! Functions that provide coding of integers with property: 0 <= f(x) <= 2 * |x|
//! Actually taken 'as is' from protobuf/wire_format_lite.h
inline ui32 ZigZagEncode32(i32 n) {
// Note: the right-shift must be arithmetic
return (ui32(n) << 1) ^ (n >> 31);
}
inline i32 ZigZagDecode32(ui32 n) {
return (n >> 1) ^ -static_cast<i32>(n & 1);
}
inline ui64 ZigZagEncode64(i64 n) {
// Note: the right-shift must be arithmetic
return (ui64(n) << 1) ^ (n >> 63);
}
inline i64 ZigZagDecode64(ui64 n) {
return (n >> 1) ^ -static_cast<i64>(n & 1);
}
////////////////////////////////////////////////////////////////////////////////
} // namespace NYson
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