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std::round, std::lround, std::llround cppreference.com
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std::round, std::lround, std::llround

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<tbody> </tbody>
float round( float arg );
 ( C++11)
double round( double arg );
 ( C++11)
long double round( long double arg );
 ( C++11)
double round( Integral arg );
 ( C++11)
long lround( float arg );
 ( C++11)
long lround( double arg );
 ( C++11)
long lround( long double arg );
 ( C++11)
long lround( Integral arg );
 ( C++11)
long long llround( float arg );
 ( C++11)
long long llround( double arg );
 ( C++11)
long long llround( long double arg );
 ( C++11)
long long llround( Integral arg );
 ( C++11)
arg.
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Computes nearest integer to arg. Number is rounded away from zero in halfway cases
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arg
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floating point value
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arg.
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Nearest integer to arg.
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