quantization func test failed with GGML_QKK_64

[winice-test]

I tried to compile the code with GGML_QKK_64 defined so that I can verify the code when QK_K != 256. Then I found test-quantize-fns failed in iq3_xxs.

Steps to reproduce on Ubuntu 22.04.3 with gnu compiler 11.4.0 :

cmake -DCMAKE_C_FLAGS="-DGGML_QKK_64" ..
cmake --build . --config Release
bin/test-quantize-fns

Then it reports the following in the bottom

Testing iq3_xxs
================================================================= iq3xs_init_impl(grid_size = 256)
iq3xs_init_impl: 18985 neighbours in total
iq3_xxs absolute quantization error:    FAILED (0.019304)
iq3_xxs dot product error:              FAILED (0.825301)

[ggerganov]

I think it works now

[winice-test]

No failure now if compile with GGML_QKK_64 defined. Thank you.