0

再会,

我让我的项目使用 Microsoft Visual C++ 2008 Express Edition 在发布模式下构建。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。我不确定为什么会发生这种情况,这是我第一次在发布模式下构建,感谢您的帮助!

尝试的步骤:

  • 浮点命令行选项。

  • 由于某些原因,单步执行代码不起作用。

  • 几个小时盯着代码感谢您的阅读!

这是行为不端的代码(注意:过去我在使用此特定功能的 NaN 时遇到过麻烦,但这很奇怪):

    /*
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; }
            };
        }
    }
}

这些文件发现了问题:

/*
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();
            };
        }
    }
}
4

1 回答 1

1

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

我的第一个建议是将您的代码从 lua 上下文中取出,并进行一个小单元测试来调试它。如果发布模式下的单元测试没有错误,那么您的问题就出在其他地方。如果仍然存在错误,您可能会发现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,这里有一些指示

根据我的经验,当遇到预期没有的 NaN、零或 INF 并且输入或计算没有问题时,您可能需要检查您或您使用的任何库是否以任何方式更改浮点标志(在 Windows 中,您使用 controlfp 或 control87,使用 GCC,您有 FPU_SETCW FPU_GETCW 宏)此外,改变浮点计算完成方式的不匹配编译标志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 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 关于比较浮点数的文章,这里是最新版本的链接:http ://www.cygnus-software.com/papers/comparingfloats/comparingfloats.htm

如果这些都没有帮助,您可能会从 LUA 传递错误的数字。

于 2012-10-15T09:24:05.973 回答