Function writeSliceEndian [src]

Prototype

pub inline fn writeSliceEndian( w: *Writer, Elem: type, slice: []const Elem, endian: std.builtin.Endian, ) Error!void

Parameters

w: *WriterElem: typeslice: []const Elemendian: std.builtin.Endian

Possible Errors

WriteFailed

See the Writer implementation for detailed diagnostics.

Example

 test writeSliceEndian {
    var buffer: [5]u8 align(2) = undefined;
    var w: Writer = .fixed(&buffer);
    try w.writeByte('x');
    const array: [2]u16 = .{ 0x1234, 0x5678 };
    try writeSliceEndian(&w, u16, &array, .big);
    try testing.expectEqualSlices(u8, &.{ 'x', 0x12, 0x34, 0x56, 0x78 }, &buffer);
}

Source

  pub inline fn writeSliceEndian(
    w: *Writer,
    Elem: type,
    slice: []const Elem,
    endian: std.builtin.Endian,
) Error!void {
    switch (@typeInfo(Elem)) {
        .@"struct" => |info| comptime assert(info.layout != .auto),
        .int, .@"enum" => {},
        else => @compileError("ill-defined memory layout"),
    }
    if (native_endian == endian) {
        return writeAll(w, @ptrCast(slice));
    } else {
        return writeSliceSwap(w, Elem, slice);
    }
}  