<![CDATA[Geschenk für alle C++'ler]]>Hi,
ich habe ein paar nützliche Hilfsfunktionen geproggt und will euch diese auch zur Verfügung stellen. Kann man immer gut gebrauchen.

const double Pi					= 3.14159265358979323846264;
const double TWO_Pi				= Pi*2.0;
const double HALF_Pi			= Pi/2.0;
const double QUARTER_Pi			= Pi/4.0;
const double Deg2Rad			= Pi/180.0;
const double Rad2Deg			= 180.0/Pi;
const float  fDeg2Rad			= static_cast(Deg2Rad);
const float  fRad2Deg			= static_cast(Rad2Deg);
const double OneThird			= 1.0/3.0;
const double One3point6th		= 1.0/3.6;
const double OneTwelfth			= 1.0/12.0;
const double OneThirtysixth		= 1.0/36.0;
const double One1760th			= 1.0/1760;
const double One5280th			= 1.0/5280;
const double One63360th			= 1.0/63360.0;
const double One25Pt4th			= 1.0/25.4;				// 0.0393700787401575		mm -> inches
const double One2Pt54th			= 1.0/2.54;				// 0.393700787401575		cm -> inches
const double OnePt0254th		= 1.0/0.0254;			// 39.3700787401575			m  -> inches
const double OnePt0000254th		= 1.0/0.0000254;		// 39370.0787401575			km -> inches
const double One2Pt20462262185th= 1.0/2.20462262185;	// 0.453592369999748		Lbs-> Kg
const double One304Pt8th		= 1.0/304.8;			// 0.00328083989501312		mm -> feet
const double One30Pt48th		= 1.0/30.48;			// 0.0328083989501312		cm -> feet
const double OnePt3048th		= 1.0/.3048;			// 3.28083989501312			m  -> feet
const double OnePt0003048th		= 1.0/.0003048;			// 3280.83989501312			km -> feet
const double One914Pt4th		= 1.0/914.4;			// 0.00109361329833771		mm -> yards 
const double One91Pt44th		= 1.0/91.44;			// 0.0109361329833771		cm -> yards
const double OnePt9144th		= 1.0/.9144;			// 1.09361329833771			m  -> yards
const double OnePt0009144th		= 1.0/.0009144;			// 1093.61329833771			km -> yards
const double One1609344th		= 1.0/1609344;			// 0.000000621371192237334	mm -> Miles
const double One160934Pt4th		= 1.0/160934.4;			// 0.00000621371192237334	cm -> Miles
const double One1609Pt344th		= 1.0/1609.344;			// 0.000621371192237334		m  -> Miles
const double One1Pt609344th		= 1.0/1.609344;			// 0.621371192237334		km -> Miles
const double One4Pt44822th		= 1.0/4.44822161525;	// 0.224808943100241		Nt -> LbForce
const double OnePt737562th		= 1.0/0.7375621493;		// 1.35581794828961			FtLbs -> NtM
const double OnePt44704th		= 1.0/0.44704;			// 2.2369362920544			Mps -> Mph
const double One3Pt785411th		= 1.0/3.78541178401;	// 0.264172052357451		Liters -> Gallons

inline double Inches2Feet( const double &i )		{ return i*OneTwelfth; }			// 1/12
inline double Inches2Yards( const double &i )		{ return i*OneThirtysixth; }		// 1/36
inline double Inches2Miles( const double &i )		{ return i*One63360th; }			// 1/63360.0
inline double Inches2MM( const double &i )			{ return i*25.4; }
inline double Inches2CM( const double &i )			{ return i*2.54; }
inline double Inches2Meters( const double &i )		{ return i*.0254; }
inline double Inches2KM( const double &i )			{ return i*.0000254; }

inline double Feet2Inches( const double &f )		{ return f*12.0; }
inline double Feet2Yards( const double &f )			{ return f*OneThird; }				// 1/3
inline double Feet2Miles( const double &f )			{ return f*One5280th; }				// 1/5280
inline double Feet2MM( const double &f )			{ return f*304.8; }
inline double Feet2CM( const double &f )			{ return f*30.48; }
inline double Feet2Meters( const double &f )		{ return f*0.3048; }
inline double Feet2KM( const double &f )			{ return f*0.0003048; }

inline double Yards2Inches( const double &y )		{ return y*36.0; }
inline double Yards2Feet( const double &y )			{ return y*3.0; }
inline double Yards2Miles( const double &y )		{ return y*One1760th; }				// 1/1760.0
inline double Yards2MM( const double &y )			{ return y*914.4; }
inline double Yards2CM( const double &y )			{ return y*91.44; }
inline double Yards2Meters( const double &y )		{ return y*.9144; }
inline double Yards2KM( const double &y )			{ return y*.0009144; }

inline double Miles2Inches( const double &mi )		{ return mi*63360.0; }
inline double Miles2Feet( const double &mi )		{ return mi*5280; }
inline double Miles2Yards( const double &mi )		{ return mi*1760.0; }
inline double Miles2MM( const double &mi )			{ return mi*1609344.0; }
inline double Miles2CM( const double &mi )			{ return mi*160934.4; }
inline double Miles2Meters( const double &mi )		{ return mi*1609.344; }
inline double Miles2KM( const double &mi )			{ return mi*1.609344; }

inline double MM2CM( const double &mm )				{ return mm*.1; }
inline double MM2Meters( const double &mm )			{ return mm*.001; }
inline double MM2KM( const double &mm )				{ return mm*.000001; }
inline double MM2Inches( const double &mm )			{ return mm*One25Pt4th; }			// 0.0393700787401575
inline double MM2Feet( const double &mm )			{ return mm*One304Pt8th; }			// 0.00328083989501312
inline double MM2Yards( const double &mm )			{ return mm*One914Pt4th; }			// 0.00109361329833771
inline double MM2Miles( const double &mm )			{ return mm*One1609344th; }			// 0.000000621371192237334

inline double CM2MM( const double &cm )				{ return cm*10.0; }
inline double CM2Meters( const double &cm )			{ return cm*.01; }
inline double CM2KM( const double &cm )				{ return cm*.00001; }
inline double CM2Inches( const double &cm )			{ return cm*One2Pt54th; }			// 0.393700787401575
inline double CM2Feet( const double &cm )			{ return cm*One30Pt48th; }			// 0.0328083989501312
inline double CM2Yards( const double &cm )			{ return cm*One91Pt44th; }			// 0.0109361329833771
inline double CM2Miles( const double &cm )			{ return cm*One160934Pt4th; }		// 0.00000621371192237334

inline double Meters2MM( const double &m )			{ return m*1000.0; }
inline double Meters2CM( const double &m )			{ return m*100.0; }
inline double Meters2KM( const double &m )			{ return m*.001; }
inline double Meters2Inches( const double &m )		{ return m*OnePt0254th; }			// 39.3700787401575
inline double Meters2Feet( const double &m )		{ return m*OnePt3048th; }			// 3.28083989501312
inline double Meters2Yards( const double &m )		{ return m*OnePt9144th; }			// 1.09361329833771
inline double Meters2Miles( const double &m )		{ return m*One1609Pt344th; }		// 0.000621371192237334

inline double KM2Meters( const double &km )			{ return km*1000.0; }
inline double KM2CM( const double &km )				{ return km*100000.0; }
inline double KM2MM( const double &km )				{ return km*1000000.0; }
inline double KM2Inches( const double &km )			{ return km*OnePt0000254th; }		// 39370.0787401575
inline double KM2Feet( const double &km )			{ return km*OnePt0003048th; }		// 3280.83989501312
inline double KM2Yards( const double &km )			{ return km*OnePt0009144th; }		// 1093.61329833771
inline double KM2Miles( const double &km )			{ return km*One1Pt609344th; }		// 0.621371192237334

inline double Kph2Mph( const double &kph )			{ return kph*One1Pt609344th; }		// 0.621371192237334
inline double Mph2Kph( const double &mph )			{ return mph*1.609344; }

inline double Kph2Mps( const double &kph )			{ return kph*One3point6th; }		// 1/3.6
inline double Mph2Mps( const double &mph )			{ return mph*0.44704; }
inline double Fps2Mps( const double &fps )			{ return fps*0.3048; }

inline double Mps2Mph( const double &mps )			{ return mps*OnePt44704th; }		// 2.2369362920544
inline double Mps2Kph( const double &mps )			{ return mps*3.6; }
inline double Mps2Fps( const double &mps )			{ return mps*OnePt3048th; }			// 3.28083989501312

inline double Lbs2Kg( const double &lbs )			{ return lbs*One2Pt20462262185th; }	// 0.453592369999748
inline double Kg2Lbs( const double &kg )			{ return kg*2.20462262185; }

inline double LbForce2Newtons( const double &lbs )	{ return lbs*4.44822161525; }
inline double Newtons2LbForce( const double &nt )	{ return nt*One4Pt44822th; }		// 0.224808943100241
inline double FtLbs2NtMeters( const double &ftlbs )	{ return ftlbs*OnePt737562th; }		// 1.35581794828961
inline double NtMeters2FtLbs( const double &ntm )	{ return ntm*0.7375621493; }

inline double Gallons2Liters( const double &l )		{ return l*3.78541178401; }
inline double Liters2Gallons( const double &g )		{ return g*One3Pt785411th; }		// 0.264172052357451

inline double Radians2Degrees( const double &r )	{ return r*Rad2Deg; }				// rad*180/Pi
inline double Degrees2Radians( const double &d )	{ return d*Deg2Rad; }				// deg*Pi/180
inline double Rad2DegreesIfloat( const float &r )	{ return double(r*fRad2Deg); }		// rad*180/Pi
inline double Deg2RadiansIfloat( const float &d )	{ return double(d*fDeg2Rad); }		// deg*Pi/180
inline float  floatRadians2Degrees(const double &r)	{ return float(r*Rad2Deg); }		// rad*180/Pi
inline float  floatDegrees2Radians(const double &d)	{ return float(d*Deg2Rad); }		// deg*Pi/180
inline float  floatRad2Degrees( const float &r )	{ return r*fRad2Deg; }				// rad*180/Pi
inline float  floatDeg2Radians( const float &d )	{ return d*fDeg2Rad; }				// deg*Pi/180
]]>https://www.c-plusplus.net/forum/topic/131060/geschenk-für-alle-c-lerRSS for NodeThu, 27 Aug 2026 01:02:22 GMTFri, 30 Dec 2005 15:28:46 GMT60<![CDATA[Reply to Geschenk für alle C++'ler on Fri, 30 Dec 2005 15:28:46 GMT]]>Hi,
ich habe ein paar nützliche Hilfsfunktionen geproggt und will euch diese auch zur Verfügung stellen. Kann man immer gut gebrauchen.

const double Pi					= 3.14159265358979323846264;
const double TWO_Pi				= Pi*2.0;
const double HALF_Pi			= Pi/2.0;
const double QUARTER_Pi			= Pi/4.0;
const double Deg2Rad			= Pi/180.0;
const double Rad2Deg			= 180.0/Pi;
const float  fDeg2Rad			= static_cast(Deg2Rad);
const float  fRad2Deg			= static_cast(Rad2Deg);
const double OneThird			= 1.0/3.0;
const double One3point6th		= 1.0/3.6;
const double OneTwelfth			= 1.0/12.0;
const double OneThirtysixth		= 1.0/36.0;
const double One1760th			= 1.0/1760;
const double One5280th			= 1.0/5280;
const double One63360th			= 1.0/63360.0;
const double One25Pt4th			= 1.0/25.4;				// 0.0393700787401575		mm -> inches
const double One2Pt54th			= 1.0/2.54;				// 0.393700787401575		cm -> inches
const double OnePt0254th		= 1.0/0.0254;			// 39.3700787401575			m  -> inches
const double OnePt0000254th		= 1.0/0.0000254;		// 39370.0787401575			km -> inches
const double One2Pt20462262185th= 1.0/2.20462262185;	// 0.453592369999748		Lbs-> Kg
const double One304Pt8th		= 1.0/304.8;			// 0.00328083989501312		mm -> feet
const double One30Pt48th		= 1.0/30.48;			// 0.0328083989501312		cm -> feet
const double OnePt3048th		= 1.0/.3048;			// 3.28083989501312			m  -> feet
const double OnePt0003048th		= 1.0/.0003048;			// 3280.83989501312			km -> feet
const double One914Pt4th		= 1.0/914.4;			// 0.00109361329833771		mm -> yards 
const double One91Pt44th		= 1.0/91.44;			// 0.0109361329833771		cm -> yards
const double OnePt9144th		= 1.0/.9144;			// 1.09361329833771			m  -> yards
const double OnePt0009144th		= 1.0/.0009144;			// 1093.61329833771			km -> yards
const double One1609344th		= 1.0/1609344;			// 0.000000621371192237334	mm -> Miles
const double One160934Pt4th		= 1.0/160934.4;			// 0.00000621371192237334	cm -> Miles
const double One1609Pt344th		= 1.0/1609.344;			// 0.000621371192237334		m  -> Miles
const double One1Pt609344th		= 1.0/1.609344;			// 0.621371192237334		km -> Miles
const double One4Pt44822th		= 1.0/4.44822161525;	// 0.224808943100241		Nt -> LbForce
const double OnePt737562th		= 1.0/0.7375621493;		// 1.35581794828961			FtLbs -> NtM
const double OnePt44704th		= 1.0/0.44704;			// 2.2369362920544			Mps -> Mph
const double One3Pt785411th		= 1.0/3.78541178401;	// 0.264172052357451		Liters -> Gallons

inline double Inches2Feet( const double &i )		{ return i*OneTwelfth; }			// 1/12
inline double Inches2Yards( const double &i )		{ return i*OneThirtysixth; }		// 1/36
inline double Inches2Miles( const double &i )		{ return i*One63360th; }			// 1/63360.0
inline double Inches2MM( const double &i )			{ return i*25.4; }
inline double Inches2CM( const double &i )			{ return i*2.54; }
inline double Inches2Meters( const double &i )		{ return i*.0254; }
inline double Inches2KM( const double &i )			{ return i*.0000254; }

inline double Feet2Inches( const double &f )		{ return f*12.0; }
inline double Feet2Yards( const double &f )			{ return f*OneThird; }				// 1/3
inline double Feet2Miles( const double &f )			{ return f*One5280th; }				// 1/5280
inline double Feet2MM( const double &f )			{ return f*304.8; }
inline double Feet2CM( const double &f )			{ return f*30.48; }
inline double Feet2Meters( const double &f )		{ return f*0.3048; }
inline double Feet2KM( const double &f )			{ return f*0.0003048; }

inline double Yards2Inches( const double &y )		{ return y*36.0; }
inline double Yards2Feet( const double &y )			{ return y*3.0; }
inline double Yards2Miles( const double &y )		{ return y*One1760th; }				// 1/1760.0
inline double Yards2MM( const double &y )			{ return y*914.4; }
inline double Yards2CM( const double &y )			{ return y*91.44; }
inline double Yards2Meters( const double &y )		{ return y*.9144; }
inline double Yards2KM( const double &y )			{ return y*.0009144; }

inline double Miles2Inches( const double &mi )		{ return mi*63360.0; }
inline double Miles2Feet( const double &mi )		{ return mi*5280; }
inline double Miles2Yards( const double &mi )		{ return mi*1760.0; }
inline double Miles2MM( const double &mi )			{ return mi*1609344.0; }
inline double Miles2CM( const double &mi )			{ return mi*160934.4; }
inline double Miles2Meters( const double &mi )		{ return mi*1609.344; }
inline double Miles2KM( const double &mi )			{ return mi*1.609344; }

inline double MM2CM( const double &mm )				{ return mm*.1; }
inline double MM2Meters( const double &mm )			{ return mm*.001; }
inline double MM2KM( const double &mm )				{ return mm*.000001; }
inline double MM2Inches( const double &mm )			{ return mm*One25Pt4th; }			// 0.0393700787401575
inline double MM2Feet( const double &mm )			{ return mm*One304Pt8th; }			// 0.00328083989501312
inline double MM2Yards( const double &mm )			{ return mm*One914Pt4th; }			// 0.00109361329833771
inline double MM2Miles( const double &mm )			{ return mm*One1609344th; }			// 0.000000621371192237334

inline double CM2MM( const double &cm )				{ return cm*10.0; }
inline double CM2Meters( const double &cm )			{ return cm*.01; }
inline double CM2KM( const double &cm )				{ return cm*.00001; }
inline double CM2Inches( const double &cm )			{ return cm*One2Pt54th; }			// 0.393700787401575
inline double CM2Feet( const double &cm )			{ return cm*One30Pt48th; }			// 0.0328083989501312
inline double CM2Yards( const double &cm )			{ return cm*One91Pt44th; }			// 0.0109361329833771
inline double CM2Miles( const double &cm )			{ return cm*One160934Pt4th; }		// 0.00000621371192237334

inline double Meters2MM( const double &m )			{ return m*1000.0; }
inline double Meters2CM( const double &m )			{ return m*100.0; }
inline double Meters2KM( const double &m )			{ return m*.001; }
inline double Meters2Inches( const double &m )		{ return m*OnePt0254th; }			// 39.3700787401575
inline double Meters2Feet( const double &m )		{ return m*OnePt3048th; }			// 3.28083989501312
inline double Meters2Yards( const double &m )		{ return m*OnePt9144th; }			// 1.09361329833771
inline double Meters2Miles( const double &m )		{ return m*One1609Pt344th; }		// 0.000621371192237334

inline double KM2Meters( const double &km )			{ return km*1000.0; }
inline double KM2CM( const double &km )				{ return km*100000.0; }
inline double KM2MM( const double &km )				{ return km*1000000.0; }
inline double KM2Inches( const double &km )			{ return km*OnePt0000254th; }		// 39370.0787401575
inline double KM2Feet( const double &km )			{ return km*OnePt0003048th; }		// 3280.83989501312
inline double KM2Yards( const double &km )			{ return km*OnePt0009144th; }		// 1093.61329833771
inline double KM2Miles( const double &km )			{ return km*One1Pt609344th; }		// 0.621371192237334

inline double Kph2Mph( const double &kph )			{ return kph*One1Pt609344th; }		// 0.621371192237334
inline double Mph2Kph( const double &mph )			{ return mph*1.609344; }

inline double Kph2Mps( const double &kph )			{ return kph*One3point6th; }		// 1/3.6
inline double Mph2Mps( const double &mph )			{ return mph*0.44704; }
inline double Fps2Mps( const double &fps )			{ return fps*0.3048; }

inline double Mps2Mph( const double &mps )			{ return mps*OnePt44704th; }		// 2.2369362920544
inline double Mps2Kph( const double &mps )			{ return mps*3.6; }
inline double Mps2Fps( const double &mps )			{ return mps*OnePt3048th; }			// 3.28083989501312

inline double Lbs2Kg( const double &lbs )			{ return lbs*One2Pt20462262185th; }	// 0.453592369999748
inline double Kg2Lbs( const double &kg )			{ return kg*2.20462262185; }

inline double LbForce2Newtons( const double &lbs )	{ return lbs*4.44822161525; }
inline double Newtons2LbForce( const double &nt )	{ return nt*One4Pt44822th; }		// 0.224808943100241
inline double FtLbs2NtMeters( const double &ftlbs )	{ return ftlbs*OnePt737562th; }		// 1.35581794828961
inline double NtMeters2FtLbs( const double &ntm )	{ return ntm*0.7375621493; }

inline double Gallons2Liters( const double &l )		{ return l*3.78541178401; }
inline double Liters2Gallons( const double &g )		{ return g*One3Pt785411th; }		// 0.264172052357451

inline double Radians2Degrees( const double &r )	{ return r*Rad2Deg; }				// rad*180/Pi
inline double Degrees2Radians( const double &d )	{ return d*Deg2Rad; }				// deg*Pi/180
inline double Rad2DegreesIfloat( const float &r )	{ return double(r*fRad2Deg); }		// rad*180/Pi
inline double Deg2RadiansIfloat( const float &d )	{ return double(d*fDeg2Rad); }		// deg*Pi/180
inline float  floatRadians2Degrees(const double &r)	{ return float(r*Rad2Deg); }		// rad*180/Pi
inline float  floatDegrees2Radians(const double &d)	{ return float(d*Deg2Rad); }		// deg*Pi/180
inline float  floatRad2Degrees( const float &r )	{ return r*fRad2Deg; }				// rad*180/Pi
inline float  floatDeg2Radians( const float &d )	{ return d*fDeg2Rad; }				// deg*Pi/180
]]>https://www.c-plusplus.net/forum/post/952862https://www.c-plusplus.net/forum/post/952862Fri, 30 Dec 2005 15:28:46 GMT<![CDATA[Reply to Geschenk für alle C++'ler on Fri, 30 Dec 2005 15:37:31 GMT]]>nicht übel. aber vielleicht sollte man daraus besser template-funktionen oder #defines machen. bei 'inline' kann man sich ja nie sicher sein, ob das auch ge-inlined wird

]]>https://www.c-plusplus.net/forum/post/952874https://www.c-plusplus.net/forum/post/952874Fri, 30 Dec 2005 15:37:31 GMT<![CDATA[Reply to Geschenk für alle C++'ler on Fri, 30 Dec 2005 15:43:45 GMT]]>ROFL, so Sachen wie One3Pt785411th hast du dir aber bei Daily-WTF geklaut, oder?

]]>https://www.c-plusplus.net/forum/post/952884https://www.c-plusplus.net/forum/post/952884Fri, 30 Dec 2005 15:43:45 GMT<![CDATA[Reply to Geschenk für alle C++'ler on Fri, 30 Dec 2005 15:45:50 GMT]]>http://www.thedailywtf.com/forums/27468/ShowPost.aspx

aber 1:1...

]]>https://www.c-plusplus.net/forum/post/952886https://www.c-plusplus.net/forum/post/952886Fri, 30 Dec 2005 15:45:50 GMT<![CDATA[Reply to Geschenk für alle C++'ler on Fri, 30 Dec 2005 15:45:34 GMT]]>der witz ist alt.

]]>https://www.c-plusplus.net/forum/post/952887https://www.c-plusplus.net/forum/post/952887Fri, 30 Dec 2005 15:45:34 GMT