callgeng.c
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callgeng.c
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	/* This is a sample of how to call geng as a procedure rather than
	* running it as a separate process. The basic idea is to construct
	* an argument list for geng's main() function. At compile time,
	* assign a name to the macros OUTPROC and GENG_MAIN. A typical
	* Unix-style compilation command would be:
	gcc -o callgeng -O3 -DMAXN=32 -DOUTPROC=myoutproc -DGENG_MAIN=geng_main \
	callgeng.c geng.c nauty.a
	*/

	#include "gtools.h"

	static unsigned long counter;

	void
	OUTPROC(FILE outfile, graph g, int n)
	{
	/* This will be called for each graph. */

	++counter;
	}


	int
	main(int argc, char *argv[])
	{
	int geng_argc;
	char *geng_argv[6];

	/* Set up geng argument list. The 0-th argument is the command name.
	* There must be a NULL at the end. This example is for connected
	* bipartite graphs of order 10 and maximum degree at most 4. */

	geng_argv[0] = "geng";
	geng_argv[1] = "-q";
	geng_argv[2] = "-cb";
	geng_argv[3] = "-D4";
	geng_argv[4] = "10";
	geng_argv[5] = NULL;
	geng_argc = 5;

	counter = 0;
	GENG_MAIN(geng_argc,geng_argv);

	printf("Number of graphs = %lu.\n",counter);

	return 0;
	}