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cppdraft/simd/flags.md

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+[simd.flags]
+
+# 29 Numerics library [[numerics]](./#numerics)
+
+## 29.10 Data-parallel types [[simd]](simd#flags)
+
+### 29.10.5 Load and store flags [simd.flags]
+
+#### [29.10.5.1](#overview) Class template flags overview [[simd.flags.overview]](simd.flags.overview)
+
+[🔗](#lib:flags,simd)
+
+namespace std::simd {template<class... Flags> struct flags {// [[simd.flags.oper]](#oper "29.10.5.2 flags operators"), flags operatorstemplate<class... Other>friend consteval auto operator|(flags, flags<Other...>); };}
+
+[1](#overview-1)
+
+[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/numerics.tex#L17255)
+
+[*Note [1](#overview-note-1)*:
+
+The class template flags acts like an integer bit-flag for types[.](#overview-1.sentence-1)
+
+— *end note*]
+
+[2](#overview-2)
+
+[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/numerics.tex#L17260)
+
+*Constraints*: Every type in the parameter pack Flags is one of *convert-flag*,*aligned-flag*, or *overaligned-​flag*<N>[.](#overview-2.sentence-1)
+
+#### [29.10.5.2](#oper) flags operators [[simd.flags.oper]](simd.flags.oper)
+
+[🔗](#lib:operator%7c,simd::flags)
+
+`template<class... Other>
+  friend consteval auto operator|(flags a, flags<Other...> b);
+`
+
+[1](#oper-1)
+
+[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/numerics.tex#L17274)
+
+*Returns*: A default-initialized object of type flags<Flags2...> for some Flags2 where every type in Flags2 is present either in template parameter pack Flags or in template parameter pack Other, and every type in template parameter
+ packs Flags and Other is present in Flags2[.](#oper-1.sentence-1)
+
+If the packs Flags and Other contain two
+ different specializations *overaligned-flag*<N1> and *overaligned-flag*<N2>, Flags2 is not required to contain the
+ specialization *overaligned-flag*<std​::​min(N1, N2)>[.](#oper-1.sentence-2)