ggml : guard against sumq2 being 0 in IQ4_NL (#20460)

2026-03-15 04:47:28 -04:00 · 2026-03-15 04:47:28 -04:00 · b9da4444df
parent 617db241aa
commit b9da4444df
1 changed files with 1 additions and 1 deletions
--- a/ggml/src/ggml-quants.c
+++ b/ggml/src/ggml-quants.c
@ -4767,7 +4767,7 @@ static void quantize_row_iq4_nl_impl(const int super_block_size, const int block
            sumqx += w*q*xb[j];
            sumq2 += w*q*q;
        }
-        d = sumqx/sumq2;
+        d = sumq2 > 0 ? sumqx/sumq2 : 0.f;
        float best = d*sumqx;
        for (int itry = -ntry; itry <= ntry; ++itry) {
            id = (itry + values[0])/max;