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/****************************************************************
* *
* Copyright 2001, 2007 Fidelity Information Services, Inc *
* *
* This source code contains the intellectual property *
* of its copyright holder(s), and is made available *
* under a license. If you do not know the terms of *
* the license, please stop and do not read further. *
* *
****************************************************************/
#include "mdef.h"
#include "gtm_string.h"
#include "gtm_time.h"
#include "op.h"
#include "mvalconv.h"
GBLREF int4 process_id;
double drand48(void);
void srand48(long int);
void op_fnrandom (int4 interval, mval *ret)
{
static int4 seed = 0;
error_def (ERR_RANDARGNEG);
int4 random;
if (interval < 1)
{
rts_error(VARLSTCNT(1) ERR_RANDARGNEG);
}
if (seed == 0)
{
seed = (int4)(time(0) * process_id);
srand48(seed);
}
random = (int4)(interval * drand48());
random = random & 0x7fffffff; /* to make sure that the sign bit(msb) is off*/
MV_FORCE_MVAL(ret, random);
}
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