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[GCC14] Avoid std::clamp in device code
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RecoVertex/PixelVertexFinding/plugins/alpaka/clusterTracksByDensity.h

Lines changed: 5 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -76,7 +76,11 @@ namespace ALPAKA_ACCELERATOR_NAMESPACE::vertexFinder {
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// fill hist (bin shall be wider than "eps")
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for (auto i : cms::alpakatools::uniform_elements(acc, nt)) {
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int iz = static_cast<int>(zt[i] * 10.f); // valid if eps <= 0.1
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iz = std::clamp(iz, INT8_MIN, INT8_MAX);
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// Equivalent of iz = std::clamp(iz, INT8_MIN, INT8_MAX)
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// which doesn't compile with gcc14 due to reference to __glibcxx_assert
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// See https://github.com/llvm/llvm-project/issues/95183
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int tmp_max = std::max<int>(iz, INT8_MIN);
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iz = std::min<int>(tmp_max, INT8_MAX);
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ALPAKA_ASSERT_ACC(iz - INT8_MIN >= 0);
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ALPAKA_ASSERT_ACC(iz - INT8_MIN < 256);
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izt[i] = iz - INT8_MIN;

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