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std::difftime

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Definido en el archivo de encabezado <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);volatiledouble d;for(int n=0; n<10000;++n)for(int m=0; m<100000;++m) d += d*n*m;// some time-consuming operationstd::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.
(plantilla de clase)[editar]
Documentación de C para difftime
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