sdk/tests/corelib/bigint_sll_test.dart

// Copyright (c) 2022, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

// Testing Bigints with and without intrinsics.
// VMOptions=--intrinsify --no-enable-asserts
// VMOptions=--intrinsify --enable-asserts
// VMOptions=--no-intrinsify --enable-asserts
// VMOptions=--no-intrinsify --no-enable-asserts
// VMOptions=--runtime_allocate_old
// VMOptions=--runtime_allocate_spill_tlab

import "package:expect/expect.dart";

expectShifted(aString, n, expectedString) {
  BigInt a = BigInt.parse(aString, radix: 16);
  BigInt expected = BigInt.parse(expectedString, radix: 16);
  BigInt actual = a << n;
  String actualString = actual.toRadixString(16);
  print("$aString << $n");
  print(" = $actualString (expected $expectedString)");
  Expect.equals(expected, actual);
}

main() {
  expectShifted(
    "d87becaa3701c97b31b5b8084f2b5b34e7857092",
    0,
    "d87becaa3701c97b31b5b8084f2b5b34e7857092",
  );
  expectShifted(
    "d87becaa3701c97b31b5b8084f2b5b34e7857092",
    1,
    "1b0f7d9546e0392f6636b70109e56b669cf0ae124",
  );
  expectShifted(
    "d87becaa3701c97b31b5b8084f2b5b34e7857092",
    2,
    "361efb2a8dc0725ecc6d6e0213cad6cd39e15c248",
  );
  expectShifted(
    "d87becaa3701c97b31b5b8084f2b5b34e7857092",
    31,
    "6c3df6551b80e4bd98dadc042795ad9a73c2b84900000000",
  );
  expectShifted(
    "d87becaa3701c97b31b5b8084f2b5b34e7857092",
    32,
    "d87becaa3701c97b31b5b8084f2b5b34e785709200000000",
  );
  expectShifted(
    "d87becaa3701c97b31b5b8084f2b5b34e7857092",
    33,
    "1b0f7d9546e0392f6636b70109e56b669cf0ae12400000000",
  );
  expectShifted(
    "d87becaa3701c97b31b5b8084f2b5b34e7857092",
    63,
    "6c3df6551b80e4bd98dadc042795ad9a73c2b8490000000000000000",
  );
  expectShifted(
    "d87becaa3701c97b31b5b8084f2b5b34e7857092",
    64,
    "d87becaa3701c97b31b5b8084f2b5b34e78570920000000000000000",
  );
  expectShifted(
    "d87becaa3701c97b31b5b8084f2b5b34e7857092",
    65,
    "1b0f7d9546e0392f6636b70109e56b669cf0ae1240000000000000000",
  );
  expectShifted(
    "d87becaa3701c97b31b5b8084f2b5b34e7857092",
    127,
    "6c3df6551b80e4bd98dadc042795ad9a73c2b84900000000000000000000000000000000",
  );
  expectShifted(
    "d87becaa3701c97b31b5b8084f2b5b34e7857092",
    128,
    "d87becaa3701c97b31b5b8084f2b5b34e785709200000000000000000000000000000000",
  );
  expectShifted(
    "d87becaa3701c97b31b5b8084f2b5b34e7857092",
    129,
    "1b0f7d9546e0392f6636b70109e56b669cf0ae12400000000000000000000000000000000",
  );

  expectShifted(
    "-d87becaa3701c97b31b5b8084f2b5b34e7857092",
    0,
    "-d87becaa3701c97b31b5b8084f2b5b34e7857092",
  );
  expectShifted(
    "-d87becaa3701c97b31b5b8084f2b5b34e7857092",
    1,
    "-1b0f7d9546e0392f6636b70109e56b669cf0ae124",
  );
  expectShifted(
    "-d87becaa3701c97b31b5b8084f2b5b34e7857092",
    2,
    "-361efb2a8dc0725ecc6d6e0213cad6cd39e15c248",
  );
  expectShifted(
    "-d87becaa3701c97b31b5b8084f2b5b34e7857092",
    31,
    "-6c3df6551b80e4bd98dadc042795ad9a73c2b84900000000",
  );
  expectShifted(
    "-d87becaa3701c97b31b5b8084f2b5b34e7857092",
    32,
    "-d87becaa3701c97b31b5b8084f2b5b34e785709200000000",
  );
  expectShifted(
    "-d87becaa3701c97b31b5b8084f2b5b34e7857092",
    33,
    "-1b0f7d9546e0392f6636b70109e56b669cf0ae12400000000",
  );
  expectShifted(
    "-d87becaa3701c97b31b5b8084f2b5b34e7857092",
    63,
    "-6c3df6551b80e4bd98dadc042795ad9a73c2b8490000000000000000",
  );
  expectShifted(
    "-d87becaa3701c97b31b5b8084f2b5b34e7857092",
    64,
    "-d87becaa3701c97b31b5b8084f2b5b34e78570920000000000000000",
  );
  expectShifted(
    "-d87becaa3701c97b31b5b8084f2b5b34e7857092",
    65,
    "-1b0f7d9546e0392f6636b70109e56b669cf0ae1240000000000000000",
  );
  expectShifted(
    "-d87becaa3701c97b31b5b8084f2b5b34e7857092",
    127,
    "-6c3df6551b80e4bd98dadc042795ad9a73c2b84900000000000000000000000000000000",
  );
  expectShifted(
    "-d87becaa3701c97b31b5b8084f2b5b34e7857092",
    128,
    "-d87becaa3701c97b31b5b8084f2b5b34e785709200000000000000000000000000000000",
  );
  expectShifted(
    "-d87becaa3701c97b31b5b8084f2b5b34e7857092",
    129,
    "-1b0f7d9546e0392f6636b70109e56b669cf0ae12400000000000000000000000000000000",
  );
}