Function SignedLeb128Size

Bcore/src/main/cpp/base/leb128.h:239–244

Returns the number of bytes needed to encode the value in unsigned LEB128.

// Returns the number of bytes needed to encode the value in unsigned LEB128.
static inline uint32_t SignedLeb128Size(int32_t data) {
  // Like UnsignedLeb128Size(), but we need one bit beyond the highest bit that differs from sign.
  data = data ^ (data >> 31);
  uint32_t x = 1 /* we need to encode the sign bit */ + 6 + 32 - CLZ(data | 1U);
  return (x * 37) >> 8;
}

static inline uint8_t* EncodeUnsignedLeb128(uint8_t* dest, uint32_t value) {
  uint8_t out = value & 0x7f;