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17 lines
621 B
Diff
17 lines
621 B
Diff
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diff --git a/src/lib/geogram/delaunay/periodic_delaunay_3d.cpp b/src/lib/geogram/delaunay/periodic_delaunay_3d.cpp
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index 352ea76..34e73e2 100644
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--- a/src/lib/geogram/delaunay/periodic_delaunay_3d.cpp
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+++ b/src/lib/geogram/delaunay/periodic_delaunay_3d.cpp
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@@ -122,7 +122,11 @@ namespace {
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#if defined(GEO_COMPILER_GCC_FAMILY)
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return GEO::index_t(Numeric::uint32(__builtin_popcount(x)));
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#elif defined(GEO_COMPILER_MSVC)
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+ #if defined(_M_ARM64)
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+ return GEO::index_t(_CountOneBits(x));
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+ #else
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return GEO::index_t(__popcnt(x));
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+ #endif
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#else
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int result = 0;
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for(int b=0; b<32; ++b) {
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