std::floor – cppreference.com

std::floor

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<tbody> </tbody>
definiert in Header <cmath>
float floor( float arg );
double floor( double arg );
long double floor( long double arg );
double floor( Integral arg );
 (seit C++11)
Berechnet nächste ganze Zahl nicht größer als arg .
Original:
Computes nearest integer not greater than arg.
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Parameter

arg -
Floating-Point-Wert
Original:
floating point value
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Rückgabewert

Nächste ganze Zahl nicht größer als arg
Original:
Nearest integer not greater than arg
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[[Image:
Rückgabewert
Original:
{{{2}}}
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|200x200px]]
Argument

Notes

Die Integer-Wert kann immer durch die gegebene Fließkomma-Typ dargestellt werden .
Original:
The integer value can be always represented by the given floating point type.
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Beispiel

#include <cmath>
#include <iostream>
 
int main()
{
    std::cout << std::fixed;
    std::cout << std::floor(12.0) << '\n';
    std::cout << std::floor(12.1) << '\n';
    std::cout << std::floor(12.5) << '\n';
    std::cout << std::floor(12.9) << '\n';
    std::cout << std::floor(13.0) << '\n';
}

Output: 

12.000000
12.000000
12.000000
12.000000
13.000000

Siehe auch