codekingpro/portable-devtools

1/*-------------------------------------------------------------------------2 *3 * geqo_random.h4 *	  random number generator5 *6 * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group7 * Portions Copyright (c) 1994, Regents of the University of California8 *9 * src/include/optimizer/geqo_random.h10 *11 *-------------------------------------------------------------------------12 */13 14/* contributed by:15   =*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=16   *  Martin Utesch				 * Institute of Automatic Control	   *17   =							 = University of Mining and Technology =18   *  utesch@aut.tu-freiberg.de  * Freiberg, Germany				   *19   =*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=20 */21 22/* -- parts of this are adapted from D. Whitley's Genitor algorithm -- */23 24#ifndef GEQO_RANDOM_H25#define GEQO_RANDOM_H26 27#include <math.h>28 29#include "optimizer/geqo.h"30 31 32extern void geqo_set_seed(PlannerInfo *root, double seed);33 34/* geqo_rand returns a random float value in the range [0.0, 1.0) */35extern double geqo_rand(PlannerInfo *root);36 37/* geqo_randint returns integer value between lower and upper inclusive */38extern int	geqo_randint(PlannerInfo *root, int upper, int lower);39 40#endif							/* GEQO_RANDOM_H */41