Example #1
0
int main(int argc, char *argv[])
{
	char tstr[32]; // string to hold GPS time -- 31 characters is enough
	const double H0 = 0.72 * LAL_H0FAC_SI; // Hubble's constant in seconds
	const size_t length = 65536; // number of points in a segment
	const size_t stride = length / 2; // number of points in a stride
	size_t i, n;
	REAL8FrequencySeries *OmegaGW = NULL;
	REAL8TimeSeries **seg = NULL;
	LIGOTimeGPS epoch;
	gsl_rng *rng;

	XLALSetErrorHandler(XLALAbortErrorHandler);

	parseargs(argc, argv);

	XLALGPSSetREAL8(&epoch, tstart);
	gsl_rng_env_setup();
	rng = gsl_rng_alloc(gsl_rng_default);
	OmegaGW = XLALSimSGWBOmegaGWFlatSpectrum(Omega0, flow, srate/length, length/2 + 1);

	n = duration * srate;
	seg = LALCalloc(numDetectors, sizeof(*seg));
	printf("# time (s)");
	for (i = 0; i < numDetectors; ++i) {
		char name[LALNameLength];
		snprintf(name, sizeof(name), "%s:STRAIN", detectors[i].frDetector.prefix);
		seg[i] = XLALCreateREAL8TimeSeries(name, &epoch, 0.0, 1.0/srate, &lalStrainUnit, length);
		printf("\t%s (strain)", name);
	}
	printf("\n");

	XLALSimSGWB(seg, detectors, numDetectors, 0, OmegaGW, H0, rng); // first time to initilize

	while (1) { // infinite loop
		size_t j;
		for (j = 0; j < stride; ++j, --n) { // output first stride points
			LIGOTimeGPS t = seg[0]->epoch;
			if (n == 0) // check if we're done
				goto end;
			printf("%s", XLALGPSToStr(tstr, XLALGPSAdd(&t, j * seg[0]->deltaT)));
			for (i = 0; i < numDetectors; ++i)
				printf("\t%e", seg[i]->data->data[j]);
			printf("\n");
		}
		XLALSimSGWB(seg, detectors, numDetectors, stride, OmegaGW, H0, rng); // make more data
	}

end:
	for (i = 0; i < numDetectors; ++i)
		XLALDestroyREAL8TimeSeries(seg[i]);
	XLALFree(seg);
	XLALDestroyREAL8FrequencySeries(OmegaGW);
	LALCheckMemoryLeaks();

	return 0;
}
Example #2
0
int main(int argc, char *argv[])
{
	const double H0 = 0.72 * LAL_H0FAC_SI; // Hubble's constant in seconds
	const double srate = 16384.0; // sampling rate in Hertz
	const size_t length = 65536; // number of points in a segment
	const size_t stride = length / 2; // number of points in a stride
	size_t i, n;
	REAL8FrequencySeries *OmegaGW = NULL;
	REAL8TimeSeries **seg = NULL;
	LIGOTimeGPS epoch;
	gsl_rng *rng;

	XLALSetErrorHandler(XLALAbortErrorHandler);

	parseargs(argc, argv);

	XLALGPSSetREAL8(&epoch, tstart);
	gsl_rng_env_setup();
	rng = gsl_rng_alloc(gsl_rng_default);
	OmegaGW = XLALSimSGWBOmegaGWFlatSpectrum(Omega0, flow, srate/length, length/2 + 1);

	n = duration * srate;
	seg = LALCalloc(numDetectors, sizeof(*seg));
	for (i = 0; i < numDetectors; ++i)
		seg[i] = XLALCreateREAL8TimeSeries("STRAIN", &epoch, 0.0, 1.0/srate, &lalStrainUnit, length);

	XLALSimSGWB(seg, detectors, numDetectors, 0, OmegaGW, H0, rng); // first time to initilize
	while (1) { // infinite loop
		double t0 = XLALGPSGetREAL8(&seg[0]->epoch);
		size_t j;
		for (j = 0; j < stride; ++j, --n) { // output first stride points
			if (n == 0) // check if we're done
				goto end;
			printf("%.9f", t0 + j * seg[0]->deltaT);
			for (i = 0; i < numDetectors; ++i)
				printf("\t%e", seg[i]->data->data[j]);
			printf("\n");
		}
		XLALSimSGWB(seg, detectors, numDetectors, stride, OmegaGW, H0, rng); // make more data
	}

end:
	for (i = 0; i < numDetectors; ++i)
		XLALDestroyREAL8TimeSeries(seg[i]);
	XLALFree(seg);
	XLALDestroyREAL8FrequencySeries(OmegaGW);
	LALCheckMemoryLeaks();

	return 0;
}