Geschenk für alle C++'ler
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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
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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
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ROFL, so Sachen wie One3Pt785411th hast du dir aber bei Daily-WTF geklaut, oder?
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der witz ist alt.