mirror of https://github.com/BOINC/boinc.git
132 lines
3.4 KiB
C++
132 lines
3.4 KiB
C++
// ----------------------------------------------------------------------
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// EXAMPLE: Fermi-Dirac function in C.
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//
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// This simple example shows how to use Rappture within a simulator
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// written in C.
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// ======================================================================
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// AUTHOR: Derrick Kearney, Purdue University
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// Copyright (c) 2004-2008 Purdue Research Foundation
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//
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// See the file "license.terms" for information on usage and
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// redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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// ======================================================================
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#include "rappture.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <math.h>
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#ifndef _WIN32
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#include <unistd.h>
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#endif
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#include "error_numbers.h"
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#include "boinc_api.h"
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#include "str_util.h"
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#include "filesys.h"
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#include "wrappture.h"
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int main(int argc, char * argv[]) {
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char buf[256];
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RpLibrary* lib = NULL;
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const char* data = NULL;
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double T = 0.0;
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double Ef = 0.0;
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double E = 0.0;
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double dE = 0.0;
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double kT = 0.0;
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double Emin = 0.0;
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double Emax = 0.0;
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double f = 0.0;
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int err = 0;
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boinc_resolve_filename("driver.xml", buf, sizeof(buf));
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lib = rpLibrary(buf);
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if (lib == NULL) {
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// cannot open file or out of memory
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printf("FAILED creating Rappture Library\n");
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return(1);
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}
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rpGetString(lib,"input.number(temperature).current",&data);
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T = rpConvertDbl(data, "K", &err);
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if (err) {
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printf ("Error while retrieving input.number(temperature).current\n");
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return(1);
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}
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rpGetString(lib,"input.number(Ef).current",&data);
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Ef = rpConvertDbl(data, "eV", &err);
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if (err) {
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printf ("Error while retrieving input.number(Ef).current\n");
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return(1);
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}
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kT = 8.61734e-5 * T;
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Emin = Ef - 10*kT;
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Emax = Ef + 10*kT;
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E = Emin;
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dE = 0.005*(Emax-Emin);
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rpPutString ( lib,
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"output.curve(f12).about.label",
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"Fermi-Dirac Factor",
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RPLIB_OVERWRITE );
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rpPutString ( lib,
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"output.curve(f12).xaxis.label",
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"Fermi-Dirac Factor",
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RPLIB_OVERWRITE );
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rpPutString ( lib,
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"output.curve(f12).yaxis.label",
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"Energy",
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RPLIB_OVERWRITE );
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rpPutString ( lib,
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"output.curve(f12).yaxis.units",
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"eV",
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RPLIB_OVERWRITE );
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// Run core simulator
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sprintf(buf, "%g %g", T, Ef);
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int retval = boinc_run_rappture_app("fermi", buf);
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if (retval) {
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fprintf(stderr, "boinc_run_rappture_app(): %d\n", retval);
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boinc_finish(EXIT_CHILD_FAILED);
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}
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// Read resulting output file
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FILE* file;
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if (!(file = boinc_fopen("fermi_out.dat", "r"))) {
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fprintf(stderr, "Unable to open data file\n");
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exit(-1);
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}
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while (fgets(buf, sizeof(buf), file)) {
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rpPutString(lib, "output.curve(f12).component.xy", buf, RPLIB_APPEND);
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}
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fclose(file);
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// Finish
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rpResult(lib);
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boinc_finish(0);
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}
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#ifdef _WIN32
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int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, LPSTR Args, int WinMode) {
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LPSTR command_line;
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char* argv[100];
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int argc;
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command_line = GetCommandLine();
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argc = parse_command_line(command_line, argv);
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return main(argc, argv);
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}
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#endif
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