fake-rand48.h

这是一款很好用的工具包

/*
 * fake-rand48.h --
 *	Fake the *rand48 functions based on srand() and rand()
 *	(for systems that don't have them)
 *
 * $Header: /home/srilm/devel/misc/src/RCS/fake-rand48.c,v 1.2 2005/07/29 03:23:57 stolcke Exp $
 */

#ifndef FAKE_RAND48
#define FAKE_RAND48

#include <stdlib.h>

inline void srand48(long seed)
{
	srand((int)seed);
}

inline long lrand48()
{
	return rand()*(RAND_MAX + 1) + rand();
}

inline double drand48()
{
	return (double)rand()/RAND_MAX;
}

#endif /* FAKE_RAND48 */