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@@ -294,8 +294,12 @@
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//
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//
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#if GLM_HAS_CONSTEXPR
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#if GLM_HAS_CONSTEXPR
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-# if (GLM_COMPILER & GLM_COMPILER_CLANG) && __has_feature(cxx_if_constexpr)
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-# define GLM_HAS_IF_CONSTEXPR 1
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+# if (GLM_COMPILER & GLM_COMPILER_CLANG)
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+# if __has_feature(cxx_if_constexpr)
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+# define GLM_HAS_IF_CONSTEXPR 1
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+# else
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+# define GLM_HAS_IF_CONSTEXPR 0
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+# endif
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# elif (GLM_LANG & GLM_LANG_CXX17_FLAG)
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# elif (GLM_LANG & GLM_LANG_CXX17_FLAG)
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# define GLM_HAS_IF_CONSTEXPR 1
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# define GLM_HAS_IF_CONSTEXPR 1
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# else
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# else
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Christophe Riccio