SM4

Collaboration diagram for SM4:

Functions
template<isa< x86 > Arch> requires (Arch.has(x86_feature::sm4) && Arch.has(x86_feature::avx))
constexpr simd< std::uint32_t, 4, Arch >	native::sm4rnds4 (simd< std::uint32_t, 4, Arch > a, simd< std::uint32_t, 4, Arch > b) noexcept
	Four SM4 data rounds independently within each 128-bit block; a is state, b is keys.
template<isa< x86 > Arch> requires (Arch.has(x86_feature::sm4) && Arch.has(x86_feature::avx))
constexpr simd< std::uint32_t, 4, Arch >	native::sm4key4 (simd< std::uint32_t, 4, Arch > a, simd< std::uint32_t, 4, Arch > b) noexcept
	Four SM4 key-schedule rounds independently within each 128-bit block; a is state, b is constants.
template<isa< x86 > Arch> requires (Arch.has(x86_feature::sm4) && Arch.has(x86_feature::avx))
constexpr simd< std::uint32_t, 8, Arch >	native::sm4rnds4 (simd< std::uint32_t, 8, Arch > a, simd< std::uint32_t, 8, Arch > b) noexcept
	Four SM4 data rounds independently within each 128-bit block; a is state, b is keys.
template<isa< x86 > Arch> requires (Arch.has(x86_feature::sm4) && Arch.has(x86_feature::avx))
constexpr simd< std::uint32_t, 8, Arch >	native::sm4key4 (simd< std::uint32_t, 8, Arch > a, simd< std::uint32_t, 8, Arch > b) noexcept
	Four SM4 key-schedule rounds independently within each 128-bit block; a is state, b is constants.
template<isa< x86 > Arch, class... Args>
void	native::sm4rnds4 (Args...)=delete
	Reject raw registers, mixed requirements and unsupported shapes.
template<isa< x86 > Arch, class... Args>
void	native::sm4key4 (Args...)=delete
	Reject raw registers, mixed requirements and unsupported shapes.

Detailed Description

Runtime calls require AVX and SM4, matching compiler targets and OS vector state. Constant evaluation preserves the instruction lane packing and modulo-word arithmetic. Missing-feature overloads are constant-evaluation-only.