zig/std/endian.zig
2017-05-19 10:39:59 -04:00

21 lines
497 B
Zig

const mem = @import("mem.zig");
const builtin = @import("builtin");
pub fn swapIfLe(comptime T: type, x: T) -> T {
swapIf(false, T, x)
}
pub fn swapIfBe(comptime T: type, x: T) -> T {
swapIf(true, T, x)
}
pub fn swapIf(is_be: bool, comptime T: type, x: T) -> T {
if (builtin.is_big_endian == is_be) swap(T, x) else x
}
pub fn swap(comptime T: type, x: T) -> T {
var buf: [@sizeOf(T)]u8 = undefined;
mem.writeInt(buf[0..], x, false);
return mem.readInt(buf, T, true);
}