本文整理汇总了C++中mozilla::UnspecifiedNaN方法的典型用法代码示例。如果您正苦于以下问题：C++ mozilla::UnspecifiedNaN方法的具体用法？C++ mozilla::UnspecifiedNaN怎么用？C++ mozilla::UnspecifiedNaN使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类mozilla的用法示例。
在下文中一共展示了mozilla::UnspecifiedNaN方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: UnspecifiedNaN
/*
* Since getDSTOffsetMilliseconds guarantees that all times seen will be
* positive, we can initialize the range at construction time with large
* negative numbers to ensure the first computation is always a cache miss and
* doesn't return a bogus offset.
*/
js::DateTimeInfo::DateTimeInfo()
{
// Set to a totally impossible TZA so that the comparison above will fail
// and all fields will be properly initialized.
localTZA_ = UnspecifiedNaN();
updateTimeZoneAdjustment();
}示例2:
static void
TestExponentComponent()
{
MOZ_ASSERT(ExponentComponent(0.0) == -int_fast16_t(DoubleExponentBias));
MOZ_ASSERT(ExponentComponent(-0.0) == -int_fast16_t(DoubleExponentBias));
MOZ_ASSERT(ExponentComponent(0.125) == -3);
MOZ_ASSERT(ExponentComponent(0.5) == -1);
MOZ_ASSERT(ExponentComponent(1.0) == 0);
MOZ_ASSERT(ExponentComponent(1.5) == 0);
MOZ_ASSERT(ExponentComponent(2.0) == 1);
MOZ_ASSERT(ExponentComponent(7) == 2);
MOZ_ASSERT(ExponentComponent(PositiveInfinity()) == DoubleExponentBias + 1);
MOZ_ASSERT(ExponentComponent(NegativeInfinity()) == DoubleExponentBias + 1);
MOZ_ASSERT(ExponentComponent(UnspecifiedNaN()) == DoubleExponentBias + 1);
}示例3: ShouldBeIdentical
static void
TestDoublesAreIdentical()
{
ShouldBeIdentical(+0.0, +0.0);
ShouldBeIdentical(-0.0, -0.0);
ShouldNotBeIdentical(+0.0, -0.0);
ShouldBeIdentical(1.0, 1.0);
ShouldNotBeIdentical(-1.0, 1.0);
ShouldBeIdentical(4294967295.0, 4294967295.0);
ShouldNotBeIdentical(-4294967295.0, 4294967295.0);
ShouldBeIdentical(4294967296.0, 4294967296.0);
ShouldBeIdentical(4294967297.0, 4294967297.0);
ShouldBeIdentical(1e300, 1e300);
ShouldBeIdentical(PositiveInfinity(), PositiveInfinity());
ShouldBeIdentical(NegativeInfinity(), NegativeInfinity());
ShouldNotBeIdentical(PositiveInfinity(), NegativeInfinity());
ShouldNotBeIdentical(-0.0, NegativeInfinity());
ShouldNotBeIdentical(+0.0, NegativeInfinity());
ShouldNotBeIdentical(1e300, NegativeInfinity());
ShouldNotBeIdentical(3.141592654, NegativeInfinity());
ShouldBeIdentical(UnspecifiedNaN(), UnspecifiedNaN());
ShouldBeIdentical(-UnspecifiedNaN(), UnspecifiedNaN());
ShouldBeIdentical(UnspecifiedNaN(), -UnspecifiedNaN());
ShouldBeIdentical(SpecificNaN(0, 17), SpecificNaN(0, 42));
ShouldBeIdentical(SpecificNaN(1, 17), SpecificNaN(1, 42));
ShouldBeIdentical(SpecificNaN(0, 17), SpecificNaN(1, 42));
ShouldBeIdentical(SpecificNaN(1, 17), SpecificNaN(0, 42));
const uint64_t Mask = 0xfffffffffffffULL;
for (unsigned i = 0; i < 52; i++) {
for (unsigned j = 0; j < 52; j++) {
for (unsigned sign = 0; i < 2; i++) {
ShouldBeIdentical(SpecificNaN(0, 1ULL << i), SpecificNaN(sign, 1ULL << j));
ShouldBeIdentical(SpecificNaN(1, 1ULL << i), SpecificNaN(sign, 1ULL << j));
ShouldBeIdentical(SpecificNaN(0, Mask & ~(1ULL << i)),
SpecificNaN(sign, Mask & ~(1ULL << j)));
ShouldBeIdentical(SpecificNaN(1, Mask & ~(1ULL << i)),
SpecificNaN(sign, Mask & ~(1ULL << j)));
}
}
}
ShouldBeIdentical(SpecificNaN(0, 17), SpecificNaN(0, 0x8000000000000ULL));
ShouldBeIdentical(SpecificNaN(0, 17), SpecificNaN(0, 0x4000000000000ULL));
ShouldBeIdentical(SpecificNaN(0, 17), SpecificNaN(0, 0x2000000000000ULL));
ShouldBeIdentical(SpecificNaN(0, 17), SpecificNaN(0, 0x1000000000000ULL));
ShouldBeIdentical(SpecificNaN(0, 17), SpecificNaN(0, 0x0800000000000ULL));
ShouldBeIdentical(SpecificNaN(0, 17), SpecificNaN(0, 0x0400000000000ULL));
ShouldBeIdentical(SpecificNaN(0, 17), SpecificNaN(0, 0x0200000000000ULL));
ShouldBeIdentical(SpecificNaN(0, 17), SpecificNaN(0, 0x0100000000000ULL));
ShouldBeIdentical(SpecificNaN(0, 17), SpecificNaN(0, 0x0080000000000ULL));
ShouldBeIdentical(SpecificNaN(0, 17), SpecificNaN(0, 0x0040000000000ULL));
ShouldBeIdentical(SpecificNaN(0, 17), SpecificNaN(0, 0x0020000000000ULL));
ShouldBeIdentical(SpecificNaN(0, 17), SpecificNaN(0, 0x0010000000000ULL));
ShouldBeIdentical(SpecificNaN(1, 17), SpecificNaN(0, 0xff0ffffffffffULL));
ShouldBeIdentical(SpecificNaN(1, 17), SpecificNaN(0, 0xfffffffffff0fULL));
ShouldNotBeIdentical(UnspecifiedNaN(), +0.0);
ShouldNotBeIdentical(UnspecifiedNaN(), -0.0);
ShouldNotBeIdentical(UnspecifiedNaN(), 1.0);
ShouldNotBeIdentical(UnspecifiedNaN(), -1.0);
ShouldNotBeIdentical(UnspecifiedNaN(), PositiveInfinity());
ShouldNotBeIdentical(UnspecifiedNaN(), NegativeInfinity());
}