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const std = @import("std");
const builtin = @import("builtin");
const mem = std.mem;
const expect = std.testing.expect;
const expectEqual = std.testing.expectEqual;
test "@shuffle int" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_riscv64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_spirv) return error.SkipZigTest;
const S = struct {
fn doTheTest() !void {
var v: @Vector(4, i32) = [4]i32{ 2147483647, -2, 30, 40 };
_ = &v;
var x: @Vector(4, i32) = [4]i32{ 1, 2147483647, 3, 4 };
_ = &x;
const mask = [4]i32{ 0, ~@as(i32, 2), 3, ~@as(i32, 3) };
var res = @shuffle(i32, v, x, mask);
try expect(mem.eql(i32, &@as([4]i32, res), &[4]i32{ 2147483647, 3, 40, 4 }));
// Implicit cast from array (of mask)
res = @shuffle(i32, v, x, [4]i32{ 0, ~@as(i32, 2), 3, ~@as(i32, 3) });
try expect(mem.eql(i32, &@as([4]i32, res), &[4]i32{ 2147483647, 3, 40, 4 }));
// Undefined
const mask2 = [4]i32{ 3, 1, 2, 0 };
res = @shuffle(i32, v, undefined, mask2);
try expect(mem.eql(i32, &@as([4]i32, res), &[4]i32{ 40, -2, 30, 2147483647 }));
// Upcasting of b
var v2: @Vector(2, i32) = [2]i32{ 2147483647, undefined };
_ = &v2;
const mask3 = [4]i32{ ~@as(i32, 0), 2, ~@as(i32, 0), 3 };
res = @shuffle(i32, x, v2, mask3);
try expect(mem.eql(i32, &@as([4]i32, res), &[4]i32{ 2147483647, 3, 2147483647, 4 }));
// Upcasting of a
var v3: @Vector(2, i32) = [2]i32{ 2147483647, -2 };
_ = &v3;
const mask4 = [4]i32{ 0, ~@as(i32, 2), 1, ~@as(i32, 3) };
res = @shuffle(i32, v3, x, mask4);
try expect(mem.eql(i32, &@as([4]i32, res), &[4]i32{ 2147483647, 3, -2, 4 }));
}
};
try S.doTheTest();
try comptime S.doTheTest();
}
test "@shuffle int strange sizes" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_riscv64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_spirv) return error.SkipZigTest;
try comptime testShuffle(2, 2, 2);
try testShuffle(2, 2, 2);
try comptime testShuffle(4, 4, 4);
try testShuffle(4, 4, 4);
try comptime testShuffle(7, 4, 4);
try testShuffle(7, 4, 4);
try comptime testShuffle(8, 6, 4);
try testShuffle(8, 6, 4);
try comptime testShuffle(2, 7, 5);
try testShuffle(2, 7, 5);
try comptime testShuffle(13, 16, 12);
try testShuffle(13, 16, 12);
try comptime testShuffle(19, 3, 17);
try testShuffle(19, 3, 17);
try comptime testShuffle(1, 10, 1);
try testShuffle(1, 10, 1);
}
fn testShuffle(
comptime x_len: comptime_int,
comptime a_len: comptime_int,
comptime b_len: comptime_int,
) !void {
const T = i32;
const XT = @Vector(x_len, T);
const AT = @Vector(a_len, T);
const BT = @Vector(b_len, T);
const a_elems = comptime blk: {
var elems: [a_len]T = undefined;
for (&elems, 0..) |*elem, i| elem.* = @intCast(100 + i);
break :blk elems;
};
var a: AT = a_elems;
_ = &a;
const b_elems = comptime blk: {
var elems: [b_len]T = undefined;
for (&elems, 0..) |*elem, i| elem.* = @intCast(1000 + i);
break :blk elems;
};
var b: BT = b_elems;
_ = &b;
const mask_seed: []const i32 = &.{ -14, -31, 23, 1, 21, 13, 17, -21, -10, -27, -16, -5, 15, 14, -2, 26, 2, -31, -24, -16 };
const mask = comptime blk: {
var elems: [x_len]i32 = undefined;
for (&elems, 0..) |*elem, i| {
const mask_val = mask_seed[i];
if (mask_val >= 0) {
elem.* = @mod(mask_val, a_len);
} else {
elem.* = @mod(mask_val, -b_len);
}
}
break :blk elems;
};
const x: XT = @shuffle(T, a, b, mask);
const x_elems: [x_len]T = x;
for (mask, x_elems) |m, x_elem| {
if (m >= 0) {
// Element from A
try expectEqual(x_elem, a_elems[@intCast(m)]);
} else {
// Element from B
try expectEqual(x_elem, b_elems[@intCast(~m)]);
}
}
}
test "@shuffle bool 1" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_riscv64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_spirv) return error.SkipZigTest;
const S = struct {
fn doTheTest() !void {
var x: @Vector(4, bool) = [4]bool{ false, true, false, true };
_ = &x;
var v: @Vector(2, bool) = [2]bool{ true, false };
_ = &v;
const mask = [4]i32{ 0, ~@as(i32, 1), 1, 2 };
const res = @shuffle(bool, x, v, mask);
try expect(mem.eql(bool, &@as([4]bool, res), &[4]bool{ false, false, true, false }));
}
};
try S.doTheTest();
try comptime S.doTheTest();
}
test "@shuffle bool 2" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_riscv64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_spirv) return error.SkipZigTest;
const S = struct {
fn doTheTest() !void {
var x: @Vector(3, bool) = [3]bool{ false, true, false };
_ = &x;
var v: @Vector(2, bool) = [2]bool{ true, false };
_ = &v;
const mask = [4]i32{ 0, ~@as(i32, 1), 1, 2 };
const res = @shuffle(bool, x, v, mask);
try expect(mem.eql(bool, &@as([4]bool, res), &[4]bool{ false, false, true, false }));
}
};
try S.doTheTest();
try comptime S.doTheTest();
}
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