mirror of
https://github.com/ziglang/zig.git
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ec95e00e28
stage2: change logic for detecting whether the main package is inside
the std package. Previously it relied on realpath() which is not portable.
This uses resolve() which is how imports already work.
* stage2: fix cleanup bug when creating Module
* flatten lib/std/special/* to lib/*
- this was motivated by making main_pkg_is_inside_std false for
compiler_rt & friends.
* rename "mini libc" to "universal libc"
73 lines
3.8 KiB
Zig
73 lines
3.8 KiB
Zig
const mulo = @import("mulo.zig");
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const testing = @import("std").testing;
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// ported from https://github.com/llvm-mirror/compiler-rt/tree/release_80/test/builtins/Unit
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fn test__mulosi4(a: i32, b: i32, expected: i32, expected_overflow: c_int) !void {
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var overflow: c_int = undefined;
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const x = mulo.__mulosi4(a, b, &overflow);
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try testing.expect(overflow == expected_overflow and (expected_overflow != 0 or x == expected));
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}
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test "mulosi4" {
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try test__mulosi4(0, 0, 0, 0);
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try test__mulosi4(0, 1, 0, 0);
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try test__mulosi4(1, 0, 0, 0);
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try test__mulosi4(0, 10, 0, 0);
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try test__mulosi4(10, 0, 0, 0);
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try test__mulosi4(0, 0x1234567, 0, 0);
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try test__mulosi4(0x1234567, 0, 0, 0);
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try test__mulosi4(0, -1, 0, 0);
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try test__mulosi4(-1, 0, 0, 0);
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try test__mulosi4(0, -10, 0, 0);
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try test__mulosi4(-10, 0, 0, 0);
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try test__mulosi4(0, -0x1234567, 0, 0);
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try test__mulosi4(-0x1234567, 0, 0, 0);
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try test__mulosi4(1, 1, 1, 0);
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try test__mulosi4(1, 10, 10, 0);
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try test__mulosi4(10, 1, 10, 0);
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try test__mulosi4(1, 0x1234567, 0x1234567, 0);
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try test__mulosi4(0x1234567, 1, 0x1234567, 0);
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try test__mulosi4(1, -1, -1, 0);
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try test__mulosi4(1, -10, -10, 0);
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try test__mulosi4(-10, 1, -10, 0);
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try test__mulosi4(1, -0x1234567, -0x1234567, 0);
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try test__mulosi4(-0x1234567, 1, -0x1234567, 0);
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try test__mulosi4(0x7FFFFFFF, -2, @bitCast(i32, @as(u32, 0x80000001)), 1);
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try test__mulosi4(-2, 0x7FFFFFFF, @bitCast(i32, @as(u32, 0x80000001)), 1);
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try test__mulosi4(0x7FFFFFFF, -1, @bitCast(i32, @as(u32, 0x80000001)), 0);
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try test__mulosi4(-1, 0x7FFFFFFF, @bitCast(i32, @as(u32, 0x80000001)), 0);
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try test__mulosi4(0x7FFFFFFF, 0, 0, 0);
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try test__mulosi4(0, 0x7FFFFFFF, 0, 0);
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try test__mulosi4(0x7FFFFFFF, 1, 0x7FFFFFFF, 0);
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try test__mulosi4(1, 0x7FFFFFFF, 0x7FFFFFFF, 0);
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try test__mulosi4(0x7FFFFFFF, 2, @bitCast(i32, @as(u32, 0x80000001)), 1);
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try test__mulosi4(2, 0x7FFFFFFF, @bitCast(i32, @as(u32, 0x80000001)), 1);
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try test__mulosi4(@bitCast(i32, @as(u32, 0x80000000)), -2, @bitCast(i32, @as(u32, 0x80000000)), 1);
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try test__mulosi4(-2, @bitCast(i32, @as(u32, 0x80000000)), @bitCast(i32, @as(u32, 0x80000000)), 1);
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try test__mulosi4(@bitCast(i32, @as(u32, 0x80000000)), -1, @bitCast(i32, @as(u32, 0x80000000)), 1);
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try test__mulosi4(-1, @bitCast(i32, @as(u32, 0x80000000)), @bitCast(i32, @as(u32, 0x80000000)), 1);
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try test__mulosi4(@bitCast(i32, @as(u32, 0x80000000)), 0, 0, 0);
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try test__mulosi4(0, @bitCast(i32, @as(u32, 0x80000000)), 0, 0);
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try test__mulosi4(@bitCast(i32, @as(u32, 0x80000000)), 1, @bitCast(i32, @as(u32, 0x80000000)), 0);
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try test__mulosi4(1, @bitCast(i32, @as(u32, 0x80000000)), @bitCast(i32, @as(u32, 0x80000000)), 0);
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try test__mulosi4(@bitCast(i32, @as(u32, 0x80000000)), 2, @bitCast(i32, @as(u32, 0x80000000)), 1);
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try test__mulosi4(2, @bitCast(i32, @as(u32, 0x80000000)), @bitCast(i32, @as(u32, 0x80000000)), 1);
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try test__mulosi4(@bitCast(i32, @as(u32, 0x80000001)), -2, @bitCast(i32, @as(u32, 0x80000001)), 1);
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try test__mulosi4(-2, @bitCast(i32, @as(u32, 0x80000001)), @bitCast(i32, @as(u32, 0x80000001)), 1);
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try test__mulosi4(@bitCast(i32, @as(u32, 0x80000001)), -1, 0x7FFFFFFF, 0);
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try test__mulosi4(-1, @bitCast(i32, @as(u32, 0x80000001)), 0x7FFFFFFF, 0);
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try test__mulosi4(@bitCast(i32, @as(u32, 0x80000001)), 0, 0, 0);
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try test__mulosi4(0, @bitCast(i32, @as(u32, 0x80000001)), 0, 0);
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try test__mulosi4(@bitCast(i32, @as(u32, 0x80000001)), 1, @bitCast(i32, @as(u32, 0x80000001)), 0);
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try test__mulosi4(1, @bitCast(i32, @as(u32, 0x80000001)), @bitCast(i32, @as(u32, 0x80000001)), 0);
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try test__mulosi4(@bitCast(i32, @as(u32, 0x80000001)), 2, @bitCast(i32, @as(u32, 0x80000000)), 1);
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try test__mulosi4(2, @bitCast(i32, @as(u32, 0x80000001)), @bitCast(i32, @as(u32, 0x80000000)), 1);
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}
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