www.pudn.com > bp_cpp.zip > prob.h

#ifndef _PUBLIC_PROB_H 
#define _PUBLIC_PROB_H 
/* 
 * public/prob.h 
 * 2004-04-25 by ShanLanshan 
 * 
 * probability library 
 */ 
 
#ifdef __cplusplus 
	extern "C" { 
#endif 
 
/* 
 * prob_set_seed 
 * set random seed 
 * 0 for random seed 
 */ 
void prob_set_seed(unsigned seed); 
 
 
/* 
 * prob_get_number 
 * get random number from 0 to 0xffffffff 
 */ 
unsigned int prob_get_number(); 
 
/* 
 * prob_get_range 
 * get a random number in appointed range 
 */ 
int prob_get_range(int start, int to); 
 
/* 
 * prob_check 
 * check probablilty in power / base 
 * 
 * Return: 
 * 	1 if probablity happened, else return 0 
 */ 
int prob_check(unsigned int power, unsigned int base); 
 
/* 
 * prob_select 
 * select in array, the probability depends on the array element's value 
 * 
 * Return: 
 * 	return the selected array element index 
 */ 
int prob_select(unsigned int a[], int len); 
 
 
#ifdef __cplusplus 
	} 
#endif 
 
#endif /* !_PUBLIC_PROB_H */