C++ (Cpp) leastCommonMultiple示例

示例#1

文件： MediaTime.cpp 项目： goruklu/WebKitForWayland

MediaTime MediaTime::operator-(const MediaTime& rhs) const
{
    if (rhs.isInvalid() || isInvalid())
        return invalidTime();

    if (rhs.isIndefinite() || isIndefinite())
        return indefiniteTime();

    if (isPositiveInfinite() && rhs.isPositiveInfinite())
        return invalidTime();

    if (isNegativeInfinite() && rhs.isNegativeInfinite())
        return invalidTime();

    if (isPositiveInfinite() || rhs.isNegativeInfinite())
        return positiveInfiniteTime();

    if (isNegativeInfinite() || rhs.isPositiveInfinite())
        return negativeInfiniteTime();

    if (hasDoubleValue() && rhs.hasDoubleValue())
        return MediaTime::createWithDouble(m_timeValueAsDouble - rhs.m_timeValueAsDouble);

    MediaTime a = *this;
    MediaTime b = rhs;

    if (a.hasDoubleValue())
        a.setTimeScale(DefaultTimeScale);
    else if (b.hasDoubleValue())
        b.setTimeScale(DefaultTimeScale);

    int32_t commonTimeScale;
    if (!leastCommonMultiple(this->m_timeScale, rhs.m_timeScale, commonTimeScale) || commonTimeScale > MaximumTimeScale)
        commonTimeScale = MaximumTimeScale;
    a.setTimeScale(commonTimeScale);
    b.setTimeScale(commonTimeScale);
    while (!safeSub(a.m_timeValue, b.m_timeValue, a.m_timeValue)) {
        if (commonTimeScale == 1)
            return a.m_timeValue > 0 ? positiveInfiniteTime() : negativeInfiniteTime();
        commonTimeScale /= 2;
        a.setTimeScale(commonTimeScale);
        b.setTimeScale(commonTimeScale);
    }
    return a;
}

示例#2

文件： CtlSimdType.cpp 项目： JonCG90/CTL

SimdStructType::SimdStructType
    (const string &name,
     const MemberVector &members)
:
    StructType (name, members),
    _objectSize (0),
    _alignedObjectSize (0),
    _objectAlignment (1)
{
    for (size_t i = 0; i < this->members().size(); ++i)
    {
	Member &m = member (i);

	m.offset = align (_objectSize, m.type->objectAlignment());
	_objectSize = m.offset + m.type->objectSize();

	_objectAlignment =
	    leastCommonMultiple (_objectAlignment, m.type->objectAlignment());
    }

    _alignedObjectSize = align (_objectSize, _objectAlignment);
}

示例#3

文件： MediaTime.cpp 项目： ZECTBynmo/LabSound

MediaTime MediaTime::operator-(const MediaTime& rhs) const
{
    if (rhs.isInvalid() || isInvalid())
        return invalidTime();

    if (rhs.isIndefinite() || isIndefinite())
        return indefiniteTime();

    if (isPositiveInfinite()) {
        if (rhs.isPositiveInfinite())
            return invalidTime();
        return positiveInfiniteTime();
    }

    if (isNegativeInfinite()) {
        if (rhs.isNegativeInfinite())
            return invalidTime();
        return negativeInfiniteTime();
    }

    int32_t commonTimeScale;
    if (!leastCommonMultiple(this->m_timeScale, rhs.m_timeScale, commonTimeScale) || commonTimeScale > MaximumTimeScale)
        commonTimeScale = MaximumTimeScale;
    MediaTime a = *this;
    MediaTime b = rhs;
    a.setTimeScale(commonTimeScale);
    b.setTimeScale(commonTimeScale);
    while (!safeSub(a.m_timeValue, b.m_timeValue, a.m_timeValue)) {
        if (commonTimeScale == 1)
            return a.m_timeValue > 0 ? positiveInfiniteTime() : negativeInfiniteTime();
        commonTimeScale /= 2;
        a.setTimeScale(commonTimeScale);
        b.setTimeScale(commonTimeScale);
    }
    return a;
}