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ldpctool: Remove VLAs from OffsetMinSumAlgorithm

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Replace variable length arrays in OffsetMinSumAlgorithm::finalp() with a
std::vector buffers.

This removes reliance on compiler VLA extensions while preserving the
existing contiguous temporary buffer layout.

Signed-off-by: Robin Getz <rgetz503@gmail.com>
This commit is contained in:
Robin Getz
2026-08-01 13:42:59 -04:00
parent 6de853d3d1
commit 1f62875563
1 changed files with 6 additions and 4 deletions
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plugins/channelrx/demoddatv/ldpctool/generic.h
+6 -4
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@@ -248,13 +248,15 @@ struct OffsetMinSumAlgorithm
static void finalp(TYPE *links, int cnt)
{
TYPE beta = 0.5 * FACTOR;
TYPE mags[cnt], mins[cnt];
std::vector<TYPE> mags(cnt);
std::vector<TYPE> mins(cnt);
std::vector<TYPE> signs(cnt);
for (int i = 0; i < cnt; ++i)
mags[i] = std::max(std::abs(links[i]) - beta, TYPE(0));
CODE::exclusive_reduce(mags, mins, cnt, min);
TYPE signs[cnt];
CODE::exclusive_reduce(links, signs, cnt, sign);
CODE::exclusive_reduce(mags.data(), mins.data(), cnt, min);
CODE::exclusive_reduce(links, signs.data(), cnt, sign);
for (int i = 0; i < cnt; ++i)
links[i] = sign(mins[i], signs[i]);