random.c File Reference

#include "nsd.h"

Defines
#define	MSEC_TO_COUNT   31
#define	ROULETTE_PRE_ITERS   10
Functions
int	NsTclRandObjCmd (ClientData arg, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[])
double	Ns_DRand (void)
void	Ns_GenSeeds (unsigned long *seedsPtr, int nseeds)

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Define Documentation

#define MSEC_TO_COUNT   31

========================================================================== AT&T Seed Generation Code ==========================================================================

The authors of this software are Don Mitchell and Matt Blaze. Copyright (c) 1995 by AT&T. Permission to use, copy, and modify this software without fee is hereby granted, provided that this entire notice is included in all copies of any software which is or includes a copy or modification of this software and in all copies of the supporting documentation for such software.

This software may be subject to United States export controls.

THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED WARRANTY. IN PARTICULAR, NEITHER THE AUTHORS NOR AT&T MAKE ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.

#define ROULETTE_PRE_ITERS   10

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Function Documentation

double Ns_DRand

(

void

)

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Ns_DRand --

Return a random double value between 0 and 1.0.

Results: Random double.

Side effects: Will generate random seed on first call.

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void Ns_GenSeeds	(	unsigned long *	seedsPtr,
		int	nseeds
	)

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Ns_GenSeeds --

Calculate an array of random seeds used by both Ns_DRand() and the old SSL module.

Results: None.

Side effects: None.

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int NsTclRandObjCmd	(	ClientData	arg,
		Tcl_Interp *	interp,
		int	objc,
		Tcl_Obj *CONST	objv[]
	)

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NsTclRandObjCmd --

This procedure implements the AOLserver Tcl

ns_rand ?maximum?

command.

Results: The Tcl result string contains a random number, either a double >= 0.0 and < 1.0 or a integer >= 0 and < max.

Side effects: None external.

Note: Interpreters share the static variables which randomizes the the random numbers even more.

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