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c++ - Visual C++ 2008 发布版本打破了我的花车

转载 作者:行者123 更新时间:2023-11-28 07:55:33 29 4
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你好,

我在 Release模式下使用 Microsoft Visual C++ 2008 Express Edition 构建了我的项目。然而,我这里的一些浮点值与调试配置中的不同。出于某种原因,对于某些特定功能,它们都变成了 NaN 或零。我不确定为什么会这样,这是我第一次在 Release模式下构建任何帮助!

尝试的步骤:

  • 浮点命令行选项。

  • 由于一些原因,单步执行代码没有成功。

  • 盯着代码看的时间感谢阅读!

这是行为不端的代码(注意:过去我在使用此特定功能时遇到过 NaN 问题,然而这很奇怪):

    /*
This file is part of White - Storm: Lightning (alpha).

Copyright 2012 Christopher Augustus Greeley

White - Storm: Lightning (alpha) is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

White - Storm: Lightning (alpha) is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with White - Storm: Lightning (alpha). If not, see <http://www.gnu.org/licenses/>.
*/
#include "Vector Calculator.h"
WSL::Math::Vector::VectorCalculator::VectorCalculator()
{
WSL::Containers::Base::XYZ temp;
default_ = temp;
}
WSL::Containers::Base::XYZ WSL::Math::Vector::VectorCalculator::VectorCalculation( WSL::Containers::Base::XYZ goTo, WSL::Containers::Base::XYZ position, float speed, bool td )
{
//Make sure that the vector doesent have any stray values lying around.//
vector = default_;
//Calculate Magnitude.//
x = goTo.getX() - position.getX();
y = goTo.getY() - position.getY();
z = goTo.getZ() - position.getZ();
if( td == true )
magnitude = magn.DotProduct( x, y, z, magnitude );
else
magnitude = magn.DotProduct( x, y, magnitude );
if( x == 0 && y == 0 && z == 0 )
return vector;
//Normilise//
magnitude = sqrt( magnitude );
//Make sure we do not divide by zero.//
if( magnitude != 0 )
{
if( x != 0 )
x /= magnitude;
if( y != 0 )
y /= magnitude;
if( td == true )
if( z != 0 )
z /= magnitude;
}
//Go The Desired Speed.//
if( speed >=0 )
{
x *= speed;
y *= speed;
}
if( td == true )
z *= speed;
vector.setX( x );
vector.setY( y );
vector.setZ( z );
return vector;
}
inline float WSL::Math::Formulas::Dot::DotProduct( float x, float y, float mag )
{
return ( mag = ( ( x ) * ( x ) + ( y ) * ( y ) ) );
}
inline float WSL::Math::Formulas::Dot::DotProduct( float x, float y, float z, float mag )
{
return ( mag = ( ( x ) * ( x ) + ( y ) * ( y ) + ( z ) * ( z ) ) );
}

标题:

    /*
This file is part of White - Storm: Lightning (alpha).

Copyright 2012 Christopher Augustus Greeley

White - Storm: Lightning (alpha) is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

White - Storm: Lightning (alpha) is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with White - Storm: Lightning (alpha). If not, see <http://www.gnu.org/licenses/>.
*/
#include "Int Bool.h"
namespace WSL
{
namespace Math
{
namespace Formulas
{
class Dot
{
public:
inline float DotProduct( float x, float y, float mag );
inline float DotProduct( float x, float y, float z, float mag );
};
}
namespace Vector
{
struct VectorCalculator
{
VectorCalculator();
WSL::Containers::Base::XYZ VectorCalculation( WSL::Containers::Base::XYZ goTo, WSL::Containers::Base::XYZ position, float speed, bool td );
WSL::Containers::Base::XYZ VectorCalculation( WSL::Containers::Base::XYZ goTo, WSL::Containers::Base::XYZ *position, float speed, bool td );
private:
WSL::Containers::Base::XYZ vector;
WSL::Containers::Base::XYZ default_;
float x, y, z, magnitude;
Math::Formulas::Dot magn;
};
}
}
}

对于上下文:

/*
This file is part of White - Storm: Lightning (alpha).

Copyright 2012 Christopher Augustus Greeley

White - Storm: Lightning (alpha) is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

White - Storm: Lightning (alpha) is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with White - Storm: Lightning (alpha). If not, see <http://www.gnu.org/licenses/>.
*/
#include "Include.h"
namespace WSL
{
namespace Containers
{
namespace Base
{
struct XYZB
{
inline float getX() { return X; }
inline float getY() { return Y; }
inline float getZ() { return Z; }
inline void setX( float Value ) { X = Value; }
inline void setY( float Value ) { Y = Value; }
inline void setZ( float Value ) { Z = Value; }
protected:
float X, Y, Z;
};
struct XYZ : public XYZB
{
public:
XYZ( float x, float y, float z )
{
X = x;
Y = y;
Z = z;
}
inline XYZ() { X = 0; Y = 0; Z = 0; }
};
}
}
}

这些文件存在问题:

/*
This file is part of White - Storm: Lightning (alpha).

Copyright 2012 Christopher Augustus Greeley

White - Storm: Lightning (alpha) is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

White - Storm: Lightning (alpha) is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with White - Storm: Lightning (alpha). If not, see <http://www.gnu.org/licenses/>.
*/
#include "Vector.h"
WSL::Containers::Math::Vector::Vector()
{
destinationInitialize = false;
threeDimentional = false;
}
WSL::Containers::Math::Vector::Vector( WSL::Containers::Base::XYZ position_ )
{
position = position_;
destinationInitialize = false;
threeDimentional = false;
}
WSL::Containers::Math::Vector::Vector( WSL::Containers::Base::XYZ position_, bool threeDimentional_ )
{
position = position_;
destinationInitialize = false;
threeDimentional = threeDimentional_;
}
float WSL::Containers::Math::Vector::GetDestinationX()
{
return destination.getX();
}
float WSL::Containers::Math::Vector::GetDestinationY()
{
return destination.getY();
}
float WSL::Containers::Math::Vector::GetDestinationZ()
{
return destination.getZ();
}
WSL::Containers::Base::XYZ WSL::Containers::Math::Vector::GetDestination()
{
return destination;
}
WSL::Containers::Base::XYZ WSL::Containers::Math::Vector::GetPosition()
{
return position;
}
float WSL::Containers::Math::Vector::GetX()
{
return position.getX();
}
float WSL::Containers::Math::Vector::GetY()
{
return position.getY();
}
float WSL::Containers::Math::Vector::GetZ()
{
return position.getZ();
}
void WSL::Containers::Math::Vector::SetThreeDimentional( bool value )
{
threeDimentional = value;
}
bool WSL::Containers::Math::Vector::GetThreeDimentional()
{
return threeDimentional;
}
void WSL::Containers::Math::Vector::CalculateVector()
{
vector = vectorCalculator.VectorCalculation( destination, position, speed, threeDimentional );
}
void WSL::Containers::Math::Vector::Move()
{
position.setX( position.getX() + vector.getX() );
position.setY( position.getY() + vector.getY() );
position.setZ( position.getZ() + vector.getZ() );
}
void WSL::Containers::Math::Vector::SetPosition( WSL::Containers::Base::XYZ position_ )
{
position = position_;
}
void WSL::Containers::Math::Vector::SetSpeed( float speed_ )
{
speed = speed_;
}
void WSL::Containers::Math::Vector::SetDestination( float x, float y )
{
destination.setX( x );
destination.setY( y );
if( destinationInitialize == false )
{
destinationInitialize = true;
destination.setZ( 0 );
}
}
void WSL::Containers::Math::Vector::SetDestination( float x, float y, float z )
{
destination.setX( x );
destination.setY( y );
destination.setZ( z );
}
void WSL::Containers::Math::Vector::SetDestination( WSL::Containers::Base::XYZ destination_ )
{
destination = destination_;
}
void WSL::Containers::Math::Vector::SetDestination( float allCoords )
{
destination.setX( allCoords );
destination.setY( allCoords );
destination.setZ( allCoords );
}
void WSL::Containers::Math::Vector::SetVector( WSL::Containers::Base::XYZ vector_ )
{
vector = vector_;
}
WSL::Containers::Base::XYZ WSL::Containers::Math::Vector::GetVector()
{
return vector;
}
float WSL::Containers::Math::Vector::GetSpeed()
{
return speed;
}

标题:

/*
This file is part of White - Storm: Lightning (alpha).

Copyright 2012 Christopher Augustus Greeley

White - Storm: Lightning (alpha) is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

White - Storm: Lightning (alpha) is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with White - Storm: Lightning (alpha). If not, see <http://www.gnu.org/licenses/>.
*/
#include "Engine.h"
namespace WSL
{
namespace Containers
{
namespace Math
{
class Vector
{
WSL::Math::Vector::VectorCalculator vectorCalculator;
WSL::Containers::Base::XYZ position;
WSL::Containers::Base::XYZ destination;
WSL::Containers::Base::XYZ vector;
bool destinationInitialize, threeDimentional;
float speed;
public:
Vector();
Vector( WSL::Containers::Base::XYZ position_ );
Vector( WSL::Containers::Base::XYZ position_, bool threeDimentional_ );
void CalculateVector();
bool GetThreeDimentional();
void Move();
void SetPosition( WSL::Containers::Base::XYZ position_ );
void SetDestination( float x, float y );
void SetDestination( float x, float y, float z );
void SetDestination( WSL::Containers::Base::XYZ destination_ );
void SetDestination( float allCoords );
void SetSpeed( float speed_ );
void SetThreeDimentional( bool value );
void SetVector( WSL::Containers::Base::XYZ vector_ );
float GetDestinationX();
float GetDestinationY();
float GetDestinationZ();
WSL::Containers::Base::XYZ GetDestination();
WSL::Containers::Base::XYZ GetPosition();
WSL::Containers::Base::XYZ GetVector();
float GetX();
float GetY();
float GetZ();
float GetSpeed();
};
}
}
}

最佳答案

好的。因此,正如我在评论中所写,我不知道您问题的答案,但也许我可以提供一些可以帮助您找到问题的指示。

我的第一个建议是将您的代码从 lua 上下文中取出并进行一个小的单元测试来调试它。如果 Release模式下的单元测试没有错误,那么您的问题出在其他地方。如果仍然存在错误,您也许可以找到您的代码中是否存在错误。如果您确定您的代码中没有错误,这里有一些提示

根据我的经验,当遇到 NaN、Zeros 或 INF 时,预计不会出现任何情况,并且输入或计算没有问题,那么您可能需要检查您或您使用的任何库是否更改了浮点标志任何方式(在 Windows 中,你使用 controlfp 或 control87,在 GCC 中,你有 FPU_SETCW FPU_GETCW 宏)不匹配的编译标志也会改变浮点计算的完成方式,可能会导致此类问题。确保使用相同的浮点标志编译所有库。

您可能还想更改检查 mag 是否不为零的方式。您总是会遇到接近零的浮点值的麻烦。如果您不知道 Bruce Dawson 关于比较 float 的文章,这里有一个指向最新版本的链接:http://www.cygnus-software.com/papers/comparingfloats/comparingfloats.htm

如果这些都没有帮助,您可能从 LUA 传递了错误的数字。

关于c++ - Visual C++ 2008 发布版本打破了我的花车,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/12809853/

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