Function TEST

tests/unit/rabitqlib/utils/rotator_test.cpp:48–77

    return x;
}
TEST(FlipSignTest, FlipWorks) {
    const size_t dim = 128;
    float data[dim];
    uint8_t flip[dim / 8];  // 1 bit per float

    // Initialize data and flip pattern
    for (size_t i = 0; i < dim; ++i) {
        data[i] = static_cast<float>(i + 1);  // Example data
    }
    for (size_t i = 0; i < dim / 8; ++i) {
        flip[i] = static_cast<uint8_t>(i % 256);  // Example flip pattern
    }

    // Perform sign flipping
    rabitqlib::rotator_impl::flip_sign(flip, data, dim);

    // Output the results
    uint8_t signs = 0;
    for (size_t i = 0; i < dim; ++i) {
        ASSERT_EQ(abs(data[i]), static_cast<float>(i + 1));
        int sign = (data[i] < 0) ? 1 : 0;
        signs = (signs << 1) | sign;
        if(i%8 == 7) {
            uint8_t expected = flip[i / 8];
            signs = bitreverse8(signs);
            ASSERT_EQ(static_cast<uint8_t>(signs & 0xFF), expected);
            signs = 0;
        }
    }
}