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std::floor

De cppreference.com
< cpp‎ | numeric‎ | math

 
 
Numéricos biblioteca
Funciones matemáticas comunes
Floating-point medio ambiente
Los números complejos
Matrices numéricas
Pseudo-aleatoria de generación de números
En tiempo de compilación aritmética racional (C++11)
Genéricos operaciones numéricas
Original:
Generic numeric operations
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Funciones matemáticas comunes
Funciones
Original:
Functions
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Operaciones básicas
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Basic operations
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Funciones exponenciales
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Exponential functions
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Funciones de energía
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Power functions
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Funciones trigonométricas e hiperbólicas
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Trigonometric and hyperbolic functions
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Error gamma y funciones
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Error and gamma functions
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Más cerca de las operaciones con enteros en coma flotante
Original:
Nearest integer floating point operations
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floor
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Funciones de punto flotante de manipulación
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Floating point manipulation functions
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Clasificación / Comparación
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Classification/Comparison
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Constantes Macro
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Macro constants
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Definido en la cabecera <cmath>
float       floor( float arg );
double      floor( double arg );
long double floor( long double arg );
double      floor( Integral arg );
(desde C++11)
Calcula entero más cercano no mayor que arg .
Original:
Computes nearest integer not greater than arg.
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Contenido

[editar] Parámetros

arg -
flotando valor en puntos
Original:
floating point value
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[editar] Valor de retorno

Entero más cercano no mayor que arg
Original:
Nearest integer not greater than arg
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[[Image:
Valor de retorno
Original:
{{{2}}}
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|200x200px]]
Argument

[editar] Notas

El valor entero puede ser representado siempre por el tipo de punto flotante dado .
Original:
The integer value can be always represented by the given floating point type.
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[editar] Ejemplo

#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';
}

Salida:

12.000000
12.000000
12.000000
12.000000
13.000000

[editar] Ver también

más cercano entero no menor que el valor dado
Original:
nearest integer not less than the given value
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(función) [editar]
(C++11)
entero más cercano no es mayor en magnitud que el valor dado
Original:
nearest integer not greater in magnitude than the given value
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(función) [editar]
(C++11)(C++11)(C++11)
entero más próximo, redondeando lejos de cero en los casos de reinserción
Original:
nearest integer, rounding away from zero in halfway cases
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(función) [editar]