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std::difftime

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< cpp‎ | chrono‎ | c
 
 
Utilidades de la biblioteca
Escriba apoyo (basic types, RTTI, type traits)
Gestión de memoria dinámica
Gestión de errores
Programa de servicios públicos
Funciones variadic
Fecha y hora
Objetos Function
(C++11)
Operadores relacionales
Original:
Relational operators
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Pares y tuplas
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Pairs and tuples
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(C++11)
Cambiar, hacia adelante y mover
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Swap, forward and move
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(C++11)
(C++11)
(C++11)
 
 
De lenguaje C de fecha y hora utilidades
Funciones
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Functions
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Tiempo de manipulación
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Time manipulation
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difftime
Conversiones de formato
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Format conversions
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Constantes
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Constants
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Tipos
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Types
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Definido en la cabecera <ctime>
double difftime( time_t time2, time_t time1 );
Calcula la diferencia entre dos tiempos naturales como objetos time_t (time2 - time1) en cuestión de segundos .
Original:
Computes difference between two calendar times as time_t objects (time2 - time1) in seconds.
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Contenido

[editar] Parámetros

time1, time2 -
veces para comparar
Original:
times to compare
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[editar] Valor de retorno

Diferencia entre dos veces en cuestión de segundos
Original:
Difference between two times in seconds
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[editar] Ejemplo

#include <iostream>
#include <ctime>
int main()
{
    std::time_t start = std::time(NULL);
    volatile double d;
    for(int n=0; n<10000; ++n)
       for(int m=0; m<100000; ++m)
           d += d*n*m; // some time-consuming operation
    std::cout << "Wall time passed: "
              << std::difftime(std::time(NULL), start) << " s.\n";
}

Salida:

Wall time passed: 7 s.

[editar] Ver también

(C++11)
un intervalo de tiempo
Original:
a time interval
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(plantilla de clase) [editar]
Documentacion C de difftime