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stage2-wasm: bigint abs + test min/max

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This commit is contained in:
Pavel Verigo
2026-04-07 00:25:49 +02:00
parent 0ebd270d90
commit df79ea941b
4 changed files with 140 additions and 1 deletions
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test/behavior/math.zig
+79
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@@ -1657,6 +1657,85 @@ test "@byteSwap > 128 bits" {
try testByteSwap(i256, 1 << 120, 1 << 128);
}
fn testMax(comptime T: type, a: T, b: T, expected: T) !void {
try expect(@max(a, b) == expected);
}
test "@max > 128 bits" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
try testMax(u140, 0, maxInt(u140), maxInt(u140));
try testMax(u140, 1 << 139, 1 << 138, 1 << 139);
try testMax(u140, (1 << 100) + 7, (1 << 100) + 3, (1 << 100) + 7);
try testMax(u140, maxInt(u140) - 1, maxInt(u140), maxInt(u140));
try testMax(u200, 1 << 199, 1 << 198, 1 << 199);
try testMax(u200, (1 << 150) + (1 << 17), (1 << 150) + (1 << 18), (1 << 150) + (1 << 18));
try testMax(u200, 0, 1 << 123, 1 << 123);
try testMax(u200, maxInt(u200), maxInt(u200) - 1, maxInt(u200));
try testMax(i140, -1, 0, 0);
try testMax(i140, minInt(i140), maxInt(i140), maxInt(i140));
try testMax(i140, -1 << 70, -1 << 69, -1 << 69);
try testMax(i140, (1 << 100) - 1, 1 << 100, 1 << 100);
try testMax(i200, -1, minInt(i200), -1);
try testMax(i200, -1 << 150, -1 << 149, -1 << 149);
try testMax(i200, 1 << 198, (1 << 198) - 1, 1 << 198);
try testMax(i200, maxInt(i200), 0, maxInt(i200));
}
fn testMin(comptime T: type, a: T, b: T, expected: T) !void {
try expect(@min(a, b) == expected);
}
test "@min > 128 bits" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
try testMin(u140, 0, maxInt(u140), 0);
try testMin(u140, 1 << 139, 1 << 138, 1 << 138);
try testMin(u140, (1 << 100) + 7, (1 << 100) + 3, (1 << 100) + 3);
try testMin(u140, maxInt(u140) - 1, maxInt(u140), maxInt(u140) - 1);
try testMin(u200, 1 << 199, 1 << 198, 1 << 198);
try testMin(u200, (1 << 150) + (1 << 17), (1 << 150) + (1 << 18), (1 << 150) + (1 << 17));
try testMin(u200, 0, 1 << 123, 0);
try testMin(u200, maxInt(u200), maxInt(u200) - 1, maxInt(u200) - 1);
try testMin(i140, -1, 0, -1);
try testMin(i140, minInt(i140), maxInt(i140), minInt(i140));
try testMin(i140, -1 << 70, -1 << 69, -1 << 70);
try testMin(i140, (1 << 100) - 1, 1 << 100, (1 << 100) - 1);
try testMin(i200, -1, minInt(i200), minInt(i200));
try testMin(i200, -1 << 150, -1 << 149, -1 << 150);
try testMin(i200, 1 << 198, (1 << 198) - 1, (1 << 198) - 1);
try testMin(i200, maxInt(i200), 0, 0);
}
fn testAbs(comptime T: type, a: T, expected: anytype) !void {
try expect(@abs(a) == expected);
}
test "@abs > 128 bits" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
try testAbs(u140, 0, 0);
try testAbs(u140, 1 << 139, 1 << 139);
try testAbs(u200, 123456789, 123456789);
try testAbs(u200, maxInt(u200), maxInt(u200));
try testAbs(i140, 0, 0);
try testAbs(i140, 1, 1);
try testAbs(i140, -1, 1);
try testAbs(i140, minInt(i140), 1 << 139);
try testAbs(i200, 1 << 198, 1 << 198);
try testAbs(i200, -1 << 198, 1 << 198);
try testAbs(i200, maxInt(i200), maxInt(i200));
try testAbs(i200, minInt(i200), 1 << 199);
}
test "overflow arithmetic with u0 values" {
if (builtin.zig_backend == .stage2_spirv) return error.SkipZigTest;