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Better coverage in @splat tests

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Cover more common and uncommon cases.
This commit is contained in:
LemonBoy 2020-11-09 17:24:47 +01:00
parent 9c5eea9f40
commit f2b4e6b2e7
1 changed files with 26 additions and 8 deletions
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34
test/stage1/behavior/vector.zig
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@ -149,15 +149,33 @@ test "vector casts of sizes not divisable by 8" {
test "vector @splat" {
const S = struct {
fn testForT(comptime N: comptime_int, v: anytype) void {
const T = @TypeOf(v);
var vec = @splat(N, v);
expectEqual(Vector(N, T), @TypeOf(vec));
var as_array = @as([N]T, vec);
for (as_array) |elem| expectEqual(v, elem);
}
fn doTheTest() void {
var v: u32 = 5;
var x = @splat(4, v);
expect(@TypeOf(x) == Vector(4, u32));
var array_x: [4]u32 = x;
expect(array_x[0] == 5);
expect(array_x[1] == 5);
expect(array_x[2] == 5);
expect(array_x[3] == 5);
// Splats with multiple-of-8 bit types that fill a 128bit vector.
testForT(16, @as(u8, 0xEE));
testForT(8, @as(u16, 0xBEEF));
testForT(4, @as(u32, 0xDEADBEEF));
testForT(2, @as(u64, 0xCAFEF00DDEADBEEF));
testForT(8, @as(f16, 3.1415));
testForT(4, @as(f32, 3.1415));
testForT(2, @as(f64, 3.1415));
// Same but fill more than 128 bits.
testForT(16 * 2, @as(u8, 0xEE));
testForT(8 * 2, @as(u16, 0xBEEF));
testForT(4 * 2, @as(u32, 0xDEADBEEF));
testForT(2 * 2, @as(u64, 0xCAFEF00DDEADBEEF));
testForT(8 * 2, @as(f16, 3.1415));
testForT(4 * 2, @as(f32, 3.1415));
testForT(2 * 2, @as(f64, 3.1415));
}
};
S.doTheTest();