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https://github.com/ziglang/zig.git
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4d05f2ae5f
Instead use the standarized option for communicating the zig compiler backend at comptime, which is `zig_backend`. This was introduced in commit 1c24ef0d0b09a12a1fe98056f2fc04de78a82df3.
50 lines
1.3 KiB
Zig
50 lines
1.3 KiB
Zig
const std = @import("std");
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const expect = std.testing.expect;
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const maxInt = std.math.maxInt;
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const minInt = std.math.minInt;
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const builtin = @import("builtin");
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test "uint128" {
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var buff: u128 = maxInt(u128);
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try expect(buff == maxInt(u128));
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const magic_const = 0x12341234123412341234123412341234;
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buff = magic_const;
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try expect(buff == magic_const);
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try expect(magic_const == 0x12341234123412341234123412341234);
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buff = 0;
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try expect(buff == @as(u128, 0));
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}
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test "undefined 128 bit int" {
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@setRuntimeSafety(true);
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// TODO implement @setRuntimeSafety in stage2
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if (builtin.zig_backend != .stage1 and builtin.mode != .Debug and builtin.mode != .ReleaseSafe) {
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return error.SkipZigTest;
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}
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var undef: u128 = undefined;
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var undef_signed: i128 = undefined;
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try expect(undef == 0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa and @bitCast(u128, undef_signed) == undef);
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}
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test "int128" {
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var buff: i128 = -1;
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try expect(buff < 0 and (buff + 1) == 0);
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try expect(@intCast(i8, buff) == @as(i8, -1));
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buff = minInt(i128);
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try expect(buff < 0);
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buff = -0x12341234123412341234123412341234;
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try expect(-buff == 0x12341234123412341234123412341234);
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}
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test "truncate int128" {
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var buff: u128 = maxInt(u128);
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try expect(@truncate(u64, buff) == maxInt(u64));
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}
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