tiny.simd.MakeNarrow

1pub fn MakeNarrow(comptime T: type) type {2    return switch (@typeInfo(T)) {3        .int => |info| switch (info.bits) {4            16 => @Int(info.signedness, 8),5            32 => @Int(info.signedness, 16),6            64 => @Int(info.signedness, 32),7            128 => if (info.signedness == .unsigned)8                u649            else10                @compileError("type has no Highway narrow relation"),11            else => @compileError("type has no Highway narrow relation"),12        },13        .float => |info| switch (info.bits) {14            32 => f16,15            64 => f32,16            else => @compileError("type has no Highway narrow relation"),17        },18        else => @compileError("type has no Highway narrow relation"),19    };20}

1pub const MakeNarrow = tag.MakeNarrow;