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const tests = [
[-0x10000000000000001n, -0x10000000000000002n],
[-0x10000000000000000n, -0x10000000000000001n],
[-0xffffffffffffffffn, -0x10000000000000000n],
[-0xfffffffffffffffen, -0xffffffffffffffffn],
[-0x8000000000000001n, -0x8000000000000002n],
[-0x8000000000000000n, -0x8000000000000001n],
[-0x7fffffffffffffffn, -0x8000000000000000n],
[-0x7ffffffffffffffen, -0x7fffffffffffffffn],
[-0x100000001n, -0x100000002n],
[-0x100000000n, -0x100000001n],
[-0xffffffffn, -0x100000000n],
[-0xfffffffen, -0xffffffffn],
[-0x80000001n, -0x80000002n],
[-0x80000000n, -0x80000001n],
[-0x7fffffffn, -0x80000000n],
[-0x7ffffffen, -0x7fffffffn],
[-2n, -3n],
[-1n, -2n],
[0n, -1n],
[1n, 0n],
[2n, 1n],
[0x7ffffffen, 0x7ffffffdn],
[0x7fffffffn, 0x7ffffffen],
[0x80000000n, 0x7fffffffn],
[0x80000001n, 0x80000000n],
[0xfffffffen, 0xfffffffdn],
[0xffffffffn, 0xfffffffen],
[0x100000000n, 0xffffffffn],
[0x100000001n, 0x100000000n],
[0x7ffffffffffffffen, 0x7ffffffffffffffdn],
[0x7fffffffffffffffn, 0x7ffffffffffffffen],
[0x8000000000000000n, 0x7fffffffffffffffn],
[0x8000000000000001n, 0x8000000000000000n],
[0xfffffffffffffffen, 0xfffffffffffffffdn],
[0xffffffffffffffffn, 0xfffffffffffffffen],
[0x10000000000000000n, 0xffffffffffffffffn],
[0x10000000000000001n, 0x10000000000000000n],
];
function f(tests) {
for (let test of tests) {
let input = test[0], expected = test[1];
assertEq(--input, expected);
}
}
for (let i = 0; i < 200; ++i) {
f(tests);
}
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