zig/test/behavior/bugs/2114.zig
2023-12-03 10:24:03 -05:00

28 lines
1.1 KiB
Zig

const builtin = @import("builtin");
const std = @import("std");
const expect = std.testing.expect;
const math = std.math;
fn ctz(x: anytype) usize {
return @ctz(x);
}
test "fixed" {
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_x86_64 and builtin.target.ofmt != .elf) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_aarch64) 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_spirv64) return error.SkipZigTest;
try testCtz();
try comptime testCtz();
}
fn testCtz() !void {
try expect(ctz(@as(u128, 0x40000000000000000000000000000000)) == 126);
try expect(math.rotl(u128, @as(u128, 0x40000000000000000000000000000000), @as(u8, 1)) == @as(u128, 0x80000000000000000000000000000000));
try expect(ctz(@as(u128, 0x80000000000000000000000000000000)) == 127);
try expect(ctz(math.rotl(u128, @as(u128, 0x40000000000000000000000000000000), @as(u8, 1))) == 127);
}