The Tor Browser: js/src/jsapi-tests/testToIntWidth.cpp@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-

     2  * vim: set ts=8 sts=4 et sw=4 tw=99:

     3  */

     4 /* This Source Code Form is subject to the terms of the Mozilla Public

     5  * License, v. 2.0. If a copy of the MPL was not distributed with this

     6  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     8 #include <math.h>

    10 #include "jsapi-tests/tests.h"

    11 #include "vm/NumericConversions.h"

    13 using js::detail::ToIntWidth;

    14 using js::detail::ToUintWidth;

    16 BEGIN_TEST(testToUint8TwiceUint8Range)

    17 {

    18     double d = -256;

    19     uint8_t expected = 0;

    20     do {

    21         CHECK(ToUintWidth<uint8_t>(d) == expected);

    23         d++;

    24         expected++;

    25     } while (d <= 256);

    26     return true;

    27 }

    28 END_TEST(testToUint8TwiceUint8Range)

    30 BEGIN_TEST(testToInt8)

    31 {

    32     double d = -128;

    33     int8_t expected = -128;

    34     do {

    35         CHECK(ToIntWidth<int8_t>(d) == expected);

    37         d++;

    38         expected++;

    39     } while (expected < 127);

    40     return true;

    41 }

    42 END_TEST(testToInt8)

    44 BEGIN_TEST(testToUint32Large)

    45 {

    46     CHECK(ToUintWidth<uint32_t>(pow(2.0, 83)) == 0);

    47     CHECK(ToUintWidth<uint32_t>(pow(2.0, 83) + pow(2.0, 31)) == (1U << 31));

    48     CHECK(ToUintWidth<uint32_t>(pow(2.0, 83) + 2 * pow(2.0, 31)) == 0);

    49     CHECK(ToUintWidth<uint32_t>(pow(2.0, 83) + 3 * pow(2.0, 31)) == (1U << 31));

    50     CHECK(ToUintWidth<uint32_t>(pow(2.0, 84)) == 0);

    51     CHECK(ToUintWidth<uint32_t>(pow(2.0, 84) + pow(2.0, 31)) == 0);

    52     CHECK(ToUintWidth<uint32_t>(pow(2.0, 84) + pow(2.0, 32)) == 0);

    53     return true;

    54 }

    55 END_TEST(testToUint32Large)

    57 BEGIN_TEST(testToUint64Large)

    58 {

    59     CHECK(ToUintWidth<uint64_t>(pow(2.0, 115)) == 0);

    60     CHECK(ToUintWidth<uint64_t>(pow(2.0, 115) + pow(2.0, 63)) == (1ULL << 63));

    61     CHECK(ToUintWidth<uint64_t>(pow(2.0, 115) + 2 * pow(2.0, 63)) == 0);

    62     CHECK(ToUintWidth<uint64_t>(pow(2.0, 115) + 3 * pow(2.0, 63)) == (1ULL << 63));

    63     CHECK(ToUintWidth<uint64_t>(pow(2.0, 116)) == 0);

    64     CHECK(ToUintWidth<uint64_t>(pow(2.0, 116) + pow(2.0, 63)) == 0);

    65     CHECK(ToUintWidth<uint64_t>(pow(2.0, 116) + pow(2.0, 64)) == 0);

    66     return true;

    67 }

    68 END_TEST(testToUint64Large)

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