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/*
* Copyright (c) 2009 Samit Basu
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <QtCore>
#include "Array.hpp"
//!
//@Module TIC Start Stopwatch Timer
//@@Section FREEMAT
//@@Usage
//Starts the stopwatch timer, which can be used to time tasks in FreeMat.
//The @|tic| takes no arguments, and returns no outputs. You must use
//@|toc| to get the elapsed time. The usage is
//@[
// tic
//@]
//@@Example
//Here is an example of timing the solution of a large matrix equation.
//@<
//A = rand(100);
//b = rand(100,1);
//tic; c = A\b; toc
//@>
//@@Signature
//function tic TicFunction
//inputs none
//outputs none
//!
static QTime ticvalue;
ArrayVector TicFunction(int nargout, const ArrayVector& arg) {
ticvalue.start();
return ArrayVector();
}
//!
//@Module CLOCK Get Current Time
//@@Section FreeMat
//@@Usage
//Returns the current date and time as a vector. The syntax for its use is
//@[
// y = clock
//@]
//where @|y| has the following format:
//@[
// y = [year month day hour minute seconds]
//@]
//@@Example
//Here is the time that this manual was last built:
//@<
//clock
//@>
//@@Signature
//function clock ClockFunction
//inputs none
//outputs y
//!
ArrayVector ClockFunction(int nargout, const ArrayVector& arg) {
QDateTime ctime(QDateTime::currentDateTime());
Array retvec(Double,NTuple(1,6));
BasicArray<double> &dp(retvec.real<double>());
dp[1] = ctime.date().year();
dp[2] = ctime.date().month();
dp[3] = ctime.date().day();
dp[4] = ctime.time().hour();
dp[5] = ctime.time().minute();
dp[6] = ctime.time().second() + ctime.time().msec()/1.0e3;
return ArrayVector(retvec);
}
//!
//@Module CLOCKTOTIME Convert Clock Vector to Epoch Time
//@@Section FreeMat
//@@Usage
//Given the output of the @|clock| command, this function computes
//the epoch time, i.e, the time in seconds since January 1,1970
//at 00:00:00 UTC. This function is most useful for calculating elapsed
//times using the clock, and should be accurate to less than a millisecond
//(although the true accuracy depends on accuracy of the argument vector).
//The usage for @|clocktotime| is
//@[
// y = clocktotime(x)
//@]
//where @|x| must be in the form of the output of @|clock|, that is
//@[
// x = [year month day hour minute seconds]
//@]
//@@Example
//Here is an example of using @|clocktotime| to time a delay of 1 second
//@<
//x = clock
//sleep(1)
//y = clock
//clocktotime(y) - clocktotime(x)
//@>
//@@Signature
//function clocktotime ClockToTimeFunction
//inputs x
//outputs y
//!
ArrayVector ClockToTimeFunction(int nargout, const ArrayVector& arg) {
if (arg.size() != 1)
throw Exception("clocktotime expects 1 argument - a vector in clock format: [year month day hour minute seconds]");
Array targ(arg[0].toClass(Double));
if (targ.length() != 6)
throw Exception("clocktotime expects 1 argument - a vector in clock format: [year month day hour minute seconds]");
const BasicArray<double> &dp(targ.constReal<double>());
QDate t_date;
t_date.setDate(int(dp[1]),int(dp[2]),int(dp[3]));
QTime t_time;
t_time.setHMS(int(dp[4]),int(dp[5]),int(dp[6]));
QDateTime t_datetime(t_date,t_time);
double retval = t_datetime.toTime_t() + (dp[6] - int(dp[6]));
return ArrayVector(Array(retval));
}
//!
//@Module TOC Stop Stopwatch Timer
//@@Section FREEMAT
//@@Usage
//Stop the stopwatch timer, which can be used to time tasks in FreeMat.
//The @|toc| function takes no arguments, and returns no outputs. You must use
//@|toc| to get the elapsed time. The usage is
//@[
// toc
//@]
//@@Example
//Here is an example of timing the solution of a large matrix equation.
//@<
//A = rand(100);
//b = rand(100,1);
//tic; c = A\b; toc
//@>
//@@Signature
//function toc TocFunction
//inputs none
//outputs y
//!
ArrayVector TocFunction(int nargout, const ArrayVector& arg) {
return ArrayVector(Array(ticvalue.elapsed()/1.0e3));
}
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