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const tests = [
[-0x8000000000000000n, -0x7fffffffffffffffn],
[-0x7fffffffffffffffn, -0x7ffffffffffffffen],
[-0x7ffffffffffffffen, -0x7ffffffffffffffdn],
[-0x100000001n, -0x100000000n],
[-0x100000000n, -0xffffffffn],
[-0xffffffffn, -0xfffffffen],
[-0xfffffffen, -0xfffffffdn],
[-0x80000001n, -0x80000000n],
[-0x80000000n, -0x7fffffffn],
[-0x7fffffffn, -0x7ffffffen],
[-0x7ffffffen, -0x7ffffffdn],
[-2n, -1n],
[-1n, 0n],
[0n, 1n],
[1n, 2n],
[2n, 3n],
[0x7ffffffen, 0x7fffffffn],
[0x7fffffffn, 0x80000000n],
[0x80000000n, 0x80000001n],
[0x80000001n, 0x80000002n],
[0xfffffffen, 0xffffffffn],
[0xffffffffn, 0x100000000n],
[0x100000000n, 0x100000001n],
[0x100000001n, 0x100000002n],
[0x7ffffffffffffffen, 0x7fffffffffffffffn],
];
function f(tests) {
for (let test of tests) {
let input = test[0], expected = test[1];
assertEq(BigInt.asIntN(64, input), input);
assertEq(BigInt.asIntN(64, expected), expected);
assertEq(++input, expected);
}
}
for (let i = 0; i < 200; ++i) {
f(tests);
}