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Re: run time of math problem

X-seq: zsh-users 26587
From: Ray Andrews <rayandrews@xxxxxxxxxxx>
To: zsh-users@xxxxxxx
Subject: Re: run time of math problem
Date: Fri, 19 Mar 2021 19:40:19 -0700
Archived-at: <https://zsh.org/users/26587>
Archived-at: <http://www.zsh.org/sympa/arcsearch_id/zsh-users/2021-03/499ede49-ed95-005e-90d0-6c3265f4cea4%40eastlink.ca>
In-reply-to: <41359-1616197959.973399@0dqq.OWmi.jXTb>
List-id: <zsh-users.zsh.org>
References: <a1c6d13a-7a04-fba4-4419-7eccbf013824@eastlink.ca> <41359-1616197959.973399@0dqq.OWmi.jXTb>

On 2021-03-19 4:52 p.m., Oliver Kiddle wrote:


If you want to optimise for speed, avoid string conversions and do, e.g.
   (( divided = sum * (1.0 / level) ))

Thanks, that's easy to miss but it makes sense. One of those invisiblethings. Doing it that way throughout is fully 3X faster. Running it up to abillion itterrations it

starts to matter.

As to the rest I was just stupidly forgetting that I'm in a loop. I'mfaking a summation.

We don't have summation do we?

You also may want to make sure to declare some of the variables as float
or integer or whatever. The sum+= line might end up being a string
concatenation if not.

Yeah, I left out the declarations but it was all kosher.

Follow-Ups:
- Re: run time of math problem
  - From: Lawrence Velázquez

References:
- run time of math problem
  - From: Ray Andrews
- Re: run time of math problem
  - From: Oliver Kiddle

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