lightning/ccan/ccan/structeq/_info

#include "config.h"
#include <stdio.h>
#include <string.h>

/**
 * structeq - bitwise comparison of structs.
 *
 * This is a replacement for memcmp, which checks the argument types are the
 * same.
 *
 * License: CC0 (Public domain)
 * Author: Rusty Russell <rusty@rustcorp.com.au>
 *
 * Example:
 *	#include <ccan/structeq/structeq.h>
 *	#include <ccan/build_assert/build_assert.h>
 *	#include <assert.h>
 *	
 *	struct mydata {
 *		int start, end;
 *	};
 *	
 *	int main(void)
 *	{
 *		struct mydata a, b;
 *	
 *		// No padding in struct, otherwise this doesn't work!
 *		BUILD_ASSERT(sizeof(a) == sizeof(a.start) + sizeof(a.end));
 *	
 *		a.start = 100;
 *		a.end = 101;
 *	
 *		b.start = 100;
 *		b.end = 101;
 *	
 *		// They are equal.
 *		assert(structeq(&a, &b));
 *	
 *		b.end++;
 *		// Now they are not.
 *		assert(!structeq(&a, &b));
 *	
 *		return 0;
 *	}
 */
int main(int argc, char *argv[])
{
	/* Expect exactly one argument */
	if (argc != 2)
		return 1;

	if (strcmp(argv[1], "depends") == 0) {
		return 0;
	}

	return 1;
}