39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
/*-------------------------------------------------------------------------
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*
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* geqo_random.h
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* random number generator
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*
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* Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/optimizer/geqo_random.h
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*
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*-------------------------------------------------------------------------
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*/
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/* contributed by:
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=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
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* Martin Utesch * Institute of Automatic Control *
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= = University of Mining and Technology =
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* utesch@aut.tu-freiberg.de * Freiberg, Germany *
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=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
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*/
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/* -- parts of this are adapted from D. Whitley's Genitor algorithm -- */
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#ifndef GEQO_RANDOM_H
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#define GEQO_RANDOM_H
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#include "optimizer/geqo.h"
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extern void geqo_set_seed(PlannerInfo *root, double seed);
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/* geqo_rand returns a random float value in the range [0.0, 1.0) */
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extern double geqo_rand(PlannerInfo *root);
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/* geqo_randint returns integer value between lower and upper inclusive */
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extern int geqo_randint(PlannerInfo *root, int upper, int lower);
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#endif /* GEQO_RANDOM_H */
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