should be it

external/duckdb/extension/tpcds/dsdgen/include/dsdgen-c/genrand.h

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+/*
+ * Legal Notice
+ *
+ * This document and associated source code (the "Work") is a part of a
+ * benchmark specification maintained by the TPC.
+ *
+ * The TPC reserves all right, title, and interest to the Work as provided
+ * under U.S. and international laws, including without limitation all patent
+ * and trademark rights therein.
+ *
+ * No Warranty
+ *
+ * 1.1 TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, THE INFORMATION
+ *     CONTAINED HEREIN IS PROVIDED "AS IS" AND WITH ALL FAULTS, AND THE
+ *     AUTHORS AND DEVELOPERS OF THE WORK HEREBY DISCLAIM ALL OTHER
+ *     WARRANTIES AND CONDITIONS, EITHER EXPRESS, IMPLIED OR STATUTORY,
+ *     INCLUDING, BUT NOT LIMITED TO, ANY (IF ANY) IMPLIED WARRANTIES,
+ *     DUTIES OR CONDITIONS OF MERCHANTABILITY, OF FITNESS FOR A PARTICULAR
+ *     PURPOSE, OF ACCURACY OR COMPLETENESS OF RESPONSES, OF RESULTS, OF
+ *     WORKMANLIKE EFFORT, OF LACK OF VIRUSES, AND OF LACK OF NEGLIGENCE.
+ *     ALSO, THERE IS NO WARRANTY OR CONDITION OF TITLE, QUIET ENJOYMENT,
+ *     QUIET POSSESSION, CORRESPONDENCE TO DESCRIPTION OR NON-INFRINGEMENT
+ *     WITH REGARD TO THE WORK.
+ * 1.2 IN NO EVENT WILL ANY AUTHOR OR DEVELOPER OF THE WORK BE LIABLE TO
+ *     ANY OTHER PARTY FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO THE
+ *     COST OF PROCURING SUBSTITUTE GOODS OR SERVICES, LOST PROFITS, LOSS
+ *     OF USE, LOSS OF DATA, OR ANY INCIDENTAL, CONSEQUENTIAL, DIRECT,
+ *     INDIRECT, OR SPECIAL DAMAGES WHETHER UNDER CONTRACT, TORT, WARRANTY,
+ *     OR OTHERWISE, ARISING IN ANY WAY OUT OF THIS OR ANY OTHER AGREEMENT
+ *     RELATING TO THE WORK, WHETHER OR NOT SUCH AUTHOR OR DEVELOPER HAD
+ *     ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.
+ *
+ * Contributors:
+ * Gradient Systems
+ */
+#ifndef GENRAND_H
+#define GENRAND_H
+
+#include "decimal.h"
+#include "date.h"
+#include "dist.h"
+#include "address.h"
+#define JMS 1
+
+typedef struct RNG_T {
+	int nUsed;
+	int nUsedPerRow;
+	long nSeed;
+	long nInitialSeed; /* used to allow skip_row() to back up */
+	int nColumn;       /* column where this stream is used */
+	int nTable;        /* table where this stream is used */
+	int nDuplicateOf;  /* duplicate streams allow independent tables to share
+	                      data streams */
+#ifdef JMS
+	ds_key_t nTotal;
+#endif
+} rng_t;
+extern rng_t Streams[];
+
+#define FL_SEED_OVERRUN 0x0001
+
+#define ALPHANUM "abcdefghijklmnopqrstuvxyzABCDEFGHIJKLMNOPQRSTUVXYZ0123456789"
+#define DIGITS   "0123456789"
+
+#define RNG_SEED 19620718
+
+int genrand_integer(int *dest, int dist, int min, int max, int mean, int stream);
+int genrand_decimal(decimal_t *dest, int dist, decimal_t *min, decimal_t *max, decimal_t *mean, int stream);
+int genrand_date(date_t *dest, int dist, date_t *min, date_t *max, date_t *mean, int stream);
+ds_key_t genrand_key(ds_key_t *dest, int dist, ds_key_t min, ds_key_t max, ds_key_t mean, int stream);
+int gen_charset(char *dest, char *set, int min, int max, int stream);
+int dump_seeds_ds(int tbl);
+void init_rand(void);
+void skip_random(int s, ds_key_t count);
+int RNGReset(int nTable);
+long next_random(int nStream);
+void genrand_email(char *pEmail, char *pFirst, char *pLast, int nColumn);
+void genrand_ipaddr(char *pDest, int nColumn);
+int genrand_url(char *pDest, int nColumn);
+int setSeed(int nStream, int nValue);
+void resetSeeds(int nTable);
+
+#endif