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From: Oliver Kiddle <opk@zsh.org>
To: Ray Andrews <rayandrews@eastlink.ca>
Cc: Zsh Users <zsh-users@zsh.org>
Subject: Re: arithmetic anomaly
Date: Fri, 26 Mar 2021 01:16:00 +0100	[thread overview]
Message-ID: <91303-1616717760.288585@Iyj2.F9RA.VD0P> (raw)
In-Reply-To: <0227b30d-4f09-2c8b-1248-557859d875ce@eastlink.ca>

Ray Andrews wrote:
>      printf "%.0f / %.0f \n" "$(( numerator ))" "$(( denominator ))"

Where you use %f, %d etc. the printf parameters are evaluated in math
context so there's no need to convert via ASCII decimal representation
with "$(( … ))". You can just do:

  printf "%.0f / %.0f \n" numerator denominator

or even

  printf "%.0f / %.0f \n" numerator 'level**level'

That feature is particular to zsh's printf. It doesn't really get you
much further with this particular script. Arbitrary precision (bignums)
might have been appropriate in the case of the shell rather than floats
but floats are what we have.

Oliver


  parent reply	other threads:[~2021-03-26  0:16 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-25 15:52 Ray Andrews
2021-03-25 20:40 ` Lawrence Velázquez
2021-03-25 22:44   ` Ray Andrews
2021-03-25 22:54     ` Roman Perepelitsa
2021-03-25 23:57       ` Ray Andrews
2021-03-26  0:16 ` Oliver Kiddle [this message]
2021-03-26  0:37   ` Ray Andrews
2021-03-26 10:35     ` Roman Perepelitsa
2021-03-26 14:36       ` Ray Andrews
2021-03-26 14:49         ` Roman Perepelitsa
2021-03-26 15:35           ` Ray Andrews
2021-03-26 17:09             ` Lawrence Velázquez
2021-03-26 21:45               ` Ray Andrews
2021-03-26 21:59                 ` Lawrence Velázquez

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