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schnellerer Algorithmus

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Leaced 2017-04-24 14:34:49 +02:00
parent c1b92cad8f
commit 77c915ada1
1 changed files with 13 additions and 12 deletions
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23
Nebenfunktionen/Runden.cpp
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@ -1,17 +1,18 @@
#include <iostream> #include<iostream>
long double Runden(long double Zahl, int NK=0, bool mathematisch=true) long double round(long double number, long long digitsAfterDecimalPoint, bool mathematical)
{ {
//Rückgabe Zahl auf NK Nachkommastellen gerundet short loop = digitsAfterDecimalPoint;
long long Schleife;
for(Schleife=NK;Schleife>0;Schleife--) Zahl*=10; while(loop>0) number *= 10, loop--;
for(Schleife=NK;Schleife<0;Schleife++) Zahl/=10; while(loop<0) number /= 10, loop++;
if(Zahl-(long long)Zahl>0.5 || Zahl-(long long)Zahl==0.5 && (mathematisch=false || (long long)Zahl%2!=0)) Zahl++;
Zahl=(long long)Zahl; if(number-(long long)number>0.5 || number-(long long)number==0.5 && ((long long)number%2!=0 || mathematical==false)) number++;
for(Schleife=NK;Schleife>0;Schleife--) Zahl/=10;
for(Schleife=NK;Schleife<0;Schleife++) Zahl*=10;
return(Zahl); number = (long long)number;
while(digitsAfterDecimalPoint>0) number /= 10, digitsAfterDecimalPoint--;
while(digitsAfterDecimalPoint<0) number *= 10, digitsAfterDecimalPoint++;
return(number);
} }