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- /*-------------------------------------------------------------------------
- *
- * geqo_random.h
- * random number generator
- *
- * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
- * Portions Copyright (c) 1994, Regents of the University of California
- *
- * src/include/optimizer/geqo_random.h
- *
- *-------------------------------------------------------------------------
- */
-
- /* contributed by:
- =*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
- * Martin Utesch * Institute of Automatic Control *
- = = University of Mining and Technology =
- * utesch@aut.tu-freiberg.de * Freiberg, Germany *
- =*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
- */
-
- /* -- parts of this are adapted from D. Whitley's Genitor algorithm -- */
-
- #ifndef GEQO_RANDOM_H
- #define GEQO_RANDOM_H
-
- #include <math.h>
-
- #include "optimizer/geqo.h"
-
-
- extern void geqo_set_seed(PlannerInfo *root, double seed);
-
- /* geqo_rand returns a random float value between 0 and 1 inclusive */
- extern double geqo_rand(PlannerInfo *root);
-
- /* geqo_randint returns integer value between lower and upper inclusive */
- #define geqo_randint(root, upper, lower) \
- ( (int) floor( geqo_rand(root)*(((upper)-(lower))+0.999999) ) + (lower) )
-
- #endif /* GEQO_RANDOM_H */
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