zig/test/cases/bitcast.zig
Jimmi Holst Christensen 378d3e4403
Solve the return type ambiguity (#1628)
Changed container and initializer syntax
* <container> { ... } -> <container> . { ... }
* <exrp> { ... } -> <expr> . { ...}
2018-10-15 09:51:15 -04:00

35 lines
742 B
Zig

const assert = @import("std").debug.assert;
test "@bitCast i32 -> u32" {
testBitCast_i32_u32();
comptime testBitCast_i32_u32();
}
fn testBitCast_i32_u32() void {
assert(conv(-1) == @maxValue(u32));
assert(conv2(@maxValue(u32)) == -1);
}
fn conv(x: i32) u32 {
return @bitCast(u32, x);
}
fn conv2(x: u32) i32 {
return @bitCast(i32, x);
}
test "@bitCast extern enum to its integer type" {
const SOCK = extern enum.{
A,
B,
fn testBitCastExternEnum() void {
var SOCK_DGRAM = @This().B;
var sock_dgram = @bitCast(c_int, SOCK_DGRAM);
assert(sock_dgram == 1);
}
};
SOCK.testBitCastExternEnum();
comptime SOCK.testBitCastExternEnum();
}