mirror of
https://codeberg.org/ziglang/zig.git
synced 2025-12-07 14:24:43 +00:00
efdb94486b
- each byte gets masked, shifted and combined - use boring masks instead of comptime for readability - tests: bit patterns with reverse operation, if applicable See #1290
21 lines
838 B
Zig
21 lines
838 B
Zig
const bswap = @import("bswap.zig");
|
|
const testing = @import("std").testing;
|
|
|
|
fn test__bswapsi2(a: u32, expected: u32) !void {
|
|
var result = bswap.__bswapsi2(a);
|
|
try testing.expectEqual(expected, result);
|
|
}
|
|
|
|
test "bswapsi2" {
|
|
try test__bswapsi2(0x01234567, 0x67452301); // 0..7
|
|
try test__bswapsi2(0x67452301, 0x01234567);
|
|
try test__bswapsi2(0x89abcdef, 0xefcdab89); // 8..f
|
|
try test__bswapsi2(0xefcdab89, 0x89abcdef);
|
|
try test__bswapsi2(0xdeadbeef, 0xefbeadde); // deadbeef
|
|
try test__bswapsi2(0xefbeadde, 0xdeadbeef);
|
|
try test__bswapsi2(0xdeadface, 0xcefaadde); // deadface
|
|
try test__bswapsi2(0xcefaadde, 0xdeadface);
|
|
try test__bswapsi2(0xaaaaaaaa, 0xaaaaaaaa); // uninitialized memory
|
|
try test__bswapsi2(0x00000000, 0x00000000); // 0s
|
|
try test__bswapsi2(0xffffffff, 0xffffffff); // fs
|
|
}
|