Function bitreverse8

tests/unit/rabitqlib/utils/rotator_test.cpp:42–47

}

uint8_t bitreverse8(uint8_t x) {
    x = (((x & 0x55) << 1) | ((x & 0xAA) >> 1));
    x = (((x & 0x33) << 2) | ((x & 0xCC) >> 2));
    x = (((x & 0x0F) << 4) | ((x & 0xF0) >> 4));
    return x;
}
TEST(FlipSignTest, FlipWorks) {
    const size_t dim = 128;
    float data[dim];