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mem: handle Float and Bool cases in byteSwapAllFields

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kcbanner 2024-07-06 23:43:18 -04:00 committed by Andrew Kelley
parent ebd9efa850
commit 647a0c9b82
1 changed files with 20 additions and 0 deletions
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20
lib/std/mem.zig
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@ -2021,6 +2021,10 @@ pub fn byteSwapAllFields(comptime S: type, ptr: *S) void {
.Enum => {
@field(ptr, f.name) = @enumFromInt(@byteSwap(@intFromEnum(@field(ptr, f.name))));
},
.Bool => {},
.Float => |float_info| {
@field(ptr, f.name) = @bitCast(@byteSwap(@as(std.meta.Int(.unsigned, float_info.bits), @bitCast(@field(ptr, f.name)))));
},
else => {
@field(ptr, f.name) = @byteSwap(@field(ptr, f.name));
},
@ -2034,6 +2038,10 @@ pub fn byteSwapAllFields(comptime S: type, ptr: *S) void {
.Enum => {
item.* = @enumFromInt(@byteSwap(@intFromEnum(item.*)));
},
.Bool => {},
.Float => |float_info| {
item.* = @bitCast(@byteSwap(@as(std.meta.Int(.unsigned, float_info.bits), @bitCast(item.*))));
},
else => {
item.* = @byteSwap(item.*);
},
@ -2050,24 +2058,32 @@ test byteSwapAllFields {
f1: u16,
f2: u32,
f3: [1]u8,
f4: bool,
f5: f32,
};
const K = extern struct {
f0: u8,
f1: T,
f2: u16,
f3: [1]u8,
f4: bool,
f5: f32,
};
var s = T{
.f0 = 0x12,
.f1 = 0x1234,
.f2 = 0x12345678,
.f3 = .{0x12},
.f4 = true,
.f5 = @as(f32, @bitCast(@as(u32, 0x4640e400))),
};
var k = K{
.f0 = 0x12,
.f1 = s,
.f2 = 0x1234,
.f3 = .{0x12},
.f4 = false,
.f5 = @as(f32, @bitCast(@as(u32, 0x45d42800))),
};
byteSwapAllFields(T, &s);
byteSwapAllFields(K, &k);
@ -2076,12 +2092,16 @@ test byteSwapAllFields {
.f1 = 0x3412,
.f2 = 0x78563412,
.f3 = .{0x12},
.f4 = true,
.f5 = @as(f32, @bitCast(@as(u32, 0x00e44046))),
}, s);
try std.testing.expectEqual(K{
.f0 = 0x12,
.f1 = s,
.f2 = 0x3412,
.f3 = .{0x12},
.f4 = false,
.f5 = @as(f32, @bitCast(@as(u32, 0x0028d445))),
}, k);
}