| // Copyright (C) 2017 Josh Wolfe. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| esid: pending |
| description: BigInt.asIntN arithmetic test cases |
| info: | |
| BigInt.asIntN ( bits, bigint ) |
| |
| 3. Let mod be a BigInt representing bigint modulo 2**bits. |
| 4. If mod ≥ 2**bits - 1, return mod - 2**bits; otherwise, return mod. |
| |
| features: [BigInt] |
| ---*/ |
| |
| assert.sameValue(BigInt.asIntN(0, -2n), 0n); |
| assert.sameValue(BigInt.asIntN(0, -1n), 0n); |
| assert.sameValue(BigInt.asIntN(0, 0n), 0n); |
| assert.sameValue(BigInt.asIntN(0, 1n), 0n); |
| assert.sameValue(BigInt.asIntN(0, 2n), 0n); |
| |
| assert.sameValue(BigInt.asIntN(1, -3n), -1n); |
| assert.sameValue(BigInt.asIntN(1, -2n), 0n); |
| assert.sameValue(BigInt.asIntN(1, -1n), -1n); |
| assert.sameValue(BigInt.asIntN(1, 0n), 0n); |
| assert.sameValue(BigInt.asIntN(1, 1n), -1n); |
| assert.sameValue(BigInt.asIntN(1, 2n), 0n); |
| assert.sameValue(BigInt.asIntN(1, 3n), -1n); |
| assert.sameValue(BigInt.asIntN(1, -123456789012345678901n), -1n); |
| assert.sameValue(BigInt.asIntN(1, -123456789012345678900n), 0n); |
| assert.sameValue(BigInt.asIntN(1, 123456789012345678900n), 0n); |
| assert.sameValue(BigInt.asIntN(1, 123456789012345678901n), -1n); |
| |
| assert.sameValue(BigInt.asIntN(2, -3n), 1n); |
| assert.sameValue(BigInt.asIntN(2, -2n), -2n); |
| assert.sameValue(BigInt.asIntN(2, -1n), -1n); |
| assert.sameValue(BigInt.asIntN(2, 0n), 0n); |
| assert.sameValue(BigInt.asIntN(2, 1n), 1n); |
| assert.sameValue(BigInt.asIntN(2, 2n), -2n); |
| assert.sameValue(BigInt.asIntN(2, 3n), -1n); |
| assert.sameValue(BigInt.asIntN(2, -123456789012345678901n), -1n); |
| assert.sameValue(BigInt.asIntN(2, -123456789012345678900n), 0n); |
| assert.sameValue(BigInt.asIntN(2, 123456789012345678900n), 0n); |
| assert.sameValue(BigInt.asIntN(2, 123456789012345678901n), 1n); |
| |
| assert.sameValue(BigInt.asIntN(8, 0xabn), -0x55n); |
| assert.sameValue(BigInt.asIntN(8, 0xabcdn), -0x33n); |
| assert.sameValue(BigInt.asIntN(8, 0xabcdef01n), 0x01n); |
| assert.sameValue(BigInt.asIntN(8, 0xabcdef0123456789abcdef0123n), 0x23n); |
| assert.sameValue(BigInt.asIntN(8, 0xabcdef0123456789abcdef0183n), -0x7dn); |
| |
| assert.sameValue(BigInt.asIntN(64, 0xabcdef0123456789abcdefn), 0x0123456789abcdefn); |
| assert.sameValue(BigInt.asIntN(65, 0xabcdef0123456789abcdefn), -0xfedcba9876543211n); |
| |
| assert.sameValue(BigInt.asIntN(200, |
| 0xcffffffffffffffffffffffffffffffffffffffffffffffffffn), -0x00000000000000000000000000000000000000000000000001n); |
| assert.sameValue(BigInt.asIntN(201, |
| 0xcffffffffffffffffffffffffffffffffffffffffffffffffffn), |
| 0xffffffffffffffffffffffffffffffffffffffffffffffffffn |
| ); |
| |
| assert.sameValue(BigInt.asIntN(200, |
| 0xc89e081df68b65fedb32cffea660e55df9605650a603ad5fc54n), -0x761f7e209749a0124cd3001599f1aa2069fa9af59fc52a03acn); |
| assert.sameValue(BigInt.asIntN(201, |
| 0xc89e081df68b65fedb32cffea660e55df9605650a603ad5fc54n), |
| 0x89e081df68b65fedb32cffea660e55df9605650a603ad5fc54n |
| ); |