random.h
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:3k
- /* Copyright (C) 2003 MySQL AB
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
- #ifndef RANDOM_H
- #define RANDOM_H
- /***************************************************************
- * I N C L U D E D F I L E S *
- ***************************************************************/
- /***************************************************************
- * M A C R O S *
- ***************************************************************/
- /***************************************************************/
- /* C O N S T A N T S */
- /***************************************************************/
- /***************************************************************
- * D A T A S T R U C T U R E S *
- ***************************************************************/
- typedef struct {
- unsigned int length;
- unsigned int *values;
- unsigned int currentIndex;
- }RandomSequence;
- typedef struct {
- unsigned int length;
- unsigned int value;
- }SequenceValues;
- /***************************************************************
- * P U B L I C F U N C T I O N S *
- ***************************************************************/
- #ifdef __cplusplus
- extern "C" {
- #endif
- extern double getTps(unsigned int count, double timeValue);
- /*----------------------------*/
- /* Random Sequences Functions */
- /*----------------------------*/
- extern int initSequence(RandomSequence *seq, SequenceValues *inputValues);
- extern unsigned int getNextRandom(RandomSequence *seq);
- extern void printSequence(RandomSequence *seq, unsigned int numPerRow);
- /*---------------------------------------------------*/
- /* Code from the glibc, to make sure the same random */
- /* number generator is used by all */
- /*---------------------------------------------------*/
- extern void myRandom48Init(long int seedval);
- extern long int myRandom48(unsigned int maxValue);
- #ifdef __cplusplus
- }
- #endif
- /***************************************************************
- * E X T E R N A L D A T A *
- ***************************************************************/
- #endif /* RANDOM_H */