sqlrand.h File Reference

Definitions for random number generations. More...

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Classes
class	sqlstat::MersenneTwister
	Mersenne Twister random number generator. More...

Macros
#define	MT_LEN   624
	length of buffer
#define	MT_IA   397
	offset in buffer
#define	MT_IB   (MT_LEN - MT_IA)
	length - offset in buffer
#define	UPPER_MASK   0x80000000
	mask for bit 31
#define	LOWER_MASK   0x7FFFFFFF
	mask for low bits
#define	MATRIX_A   0x9908B0DF
	mask for distributing bit 0
#define	TWIST(b, i, j)   ((b)[i] & UPPER_MASK) | ((b)[j] & LOWER_MASK)
	merge bit 31 of one parameter with the low bits of the other parameter.
#define	MAGIC(s)   (((s)&1)*MATRIX_A)
	distribute the low bit

Detailed Description

Definitions for random number generations.

Definition in file sqlrand.h.