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https://designers-guide.org/forum/YaBB.pl Design Languages >> Verilog-AMS >> $dist_normal https://designers-guide.org/forum/YaBB.pl?num=1400968461 Message started by fullstop on May 24th, 2014, 2:54pm |
Title: $dist_normal Post by fullstop on May 24th, 2014, 2:54pm Hi , I am trying to generate random number normally distributed at every time stamp of my transient simulations. this is module I am using. `include "constants.vams" `include "disciplines.vams" module distcheck (pinout) ; electrical pinout ; integer seed ; real rrandnum,counter=0.0 ; analog begin @ (initial_step) begin seed = 0 ; end counter=counter+1; rrandnum = abs($dist_normal( seed,0,1)) ; V(pinout) <+ rrandnum; end // of analog block endmodule but when i check the output it is giving me weibull and not normal distribution, can anybody please help me on this thanks a lot in advance |
Title: Re: $dist_normal Post by boe on May 26th, 2014, 5:14am Fullstop, Code:
- B O E |
Title: Re: $dist_normal Post by fullstop on May 26th, 2014, 6:39am Hi BOE, thanks for the reply. Can you please help me how that can be done. I want to generate a random number for every time step of my transient simulation. Thanks fullstiop |
Title: Re: $dist_normal Post by boe on May 26th, 2014, 7:07am Fullstop, First of all, taking the absolute value is definitely wrong. I suggest Code:
- B O E |
Title: Re: $dist_normal Post by fullstop on May 26th, 2014, 7:36am Hey BOE, Thanks a lot, infact that was the problem. There is one more issue. I think it is generating a new random number at every iteration at every time stamp. Isn't it possible like it only generate a random number only when time stamp is increased and not at every iteration during transient simulation. It is taking a lot of time thanks fullstop |
Title: Re: $dist_normal Post by Geoffrey_Coram on Jul 8th, 2014, 7:58am Perhaps that's a bug in your simulator? You may be able to print the value with $debug("rrandnum=%g at time=%g\n", rrandnum, $abstime); and see if you get different values at the same time. |
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