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Re: handy shell function/alias that wraps bc

From	Janis Papanagnou <janis_papanagnou+ng@hotmail.com>
Newsgroups	comp.unix.shell
Subject	Re: handy shell function/alias that wraps bc
Date	2025-11-04 05:34 +0100
Organization	A noiseless patient Spider
Message-ID	<10ebvo2$3d90e$1@dont-email.me> (permalink)
References	(2 earlier) <10ead4v$2tvmp$1@dont-email.me> <10eaesd$2u47l$1@dont-email.me> <10eak74$vgfp$1@news.xmission.com> <10eakvt$30ji5$1@dont-email.me> <slrn10gie3u.2djo.naddy@lorvorc.mips.inka.de>

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On 04.11.2025 00:19, Christian Weisgerber wrote:
> On 2025-11-03, Janis Papanagnou <janis_papanagnou+ng@hotmail.com> wrote:
> 
>> $ zsh -c 'echo $(( 1.0+2.3 ))'
>> 3.2999999999999998
>>
>> $ ksh -c 'echo $(( 1.0+2.3 ))'
>> 3.3
>>
>> Zsh is not really confidence-inspiring here. - Hmm..
> 
> I think 0.3 cannot be represented in binary floating point format,
> so you are getting an approximation.  Zsh and ksh appear to apply
> different rounding on output.  It's probably just the difference
> between %.17g and %g or such.

Yes, sure. - It's just that my "simple" pocket-calculator that
I bought around 1980 does not show such obvious rounding errors
(i.e. with numbers it can not exactly represent).

Janis

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handy shell function/alias that wraps bc Michael Sanders <porkchop@invalid.foo> - 2025-10-31 06:32 +0000
  Re: handy shell function/alias that wraps bc Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-10-31 06:38 +0000
    Re: handy shell function/alias that wraps bc gazelle@shell.xmission.com (Kenny McCormack) - 2025-10-31 10:16 +0000
      Re: handy shell function/alias that wraps bc Michael Sanders <porkchop@invalid.foo> - 2025-10-31 15:49 +0000
    Re: handy shell function/alias that wraps bc Geoff Clare <geoff@clare.See-My-Signature.invalid> - 2025-10-31 13:16 +0000
      Re: handy shell function/alias that wraps bc Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-10-31 23:29 +0000
    Re: handy shell function/alias that wraps bc Michael Sanders <porkchop@invalid.foo> - 2025-10-31 15:31 +0000
    Re: handy shell function/alias that wraps bc Jim <zsd+ng@jdvb.ca> - 2025-11-07 10:09 -0400
      Re: handy shell function/alias that wraps bc Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-11-08 00:00 +0000
        Re: handy shell function/alias that wraps bc Christian Weisgerber <naddy@mips.inka.de> - 2025-11-08 16:51 +0000
          Re: handy shell function/alias that wraps bc Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-11-08 21:55 +0000
        Re: handy shell function/alias that wraps bc Jim Diamond <zsd@jdvb.ca> - 2025-11-19 20:37 -0400
          Re: handy shell function/alias that wraps bc Brian Patrie <bpatrie@bellsouth.spamisicky.net> - 2025-11-23 14:40 -0600
            Re: handy shell function/alias that wraps bc Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-11-23 20:58 +0000
            Re: handy shell function/alias that wraps bc Jim Diamond <zsd@jdvb.ca> - 2025-11-24 21:12 -0400
  Re: handy shell function/alias that wraps bc Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-10-31 10:38 +0100
    Re: handy shell function/alias that wraps bc gazelle@shell.xmission.com (Kenny McCormack) - 2025-10-31 12:39 +0000
      Re: handy shell function/alias that wraps bc Kaz Kylheku <643-408-1753@kylheku.com> - 2025-10-31 17:03 +0000
      Re: handy shell function/alias that wraps bc Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-10-31 18:14 +0100
        Re: handy shell function/alias that wraps bc Richard Harnden <richard.nospam@gmail.invalid> - 2025-11-03 14:03 +0000
          Re: handy shell function/alias that wraps bc Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-11-03 15:10 +0100
            Re: handy shell function/alias that wraps bc Richard Harnden <richard.nospam@gmail.invalid> - 2025-11-03 14:40 +0000
              Re: handy shell function/alias that wraps bc gazelle@shell.xmission.com (Kenny McCormack) - 2025-11-03 16:11 +0000
                Re: handy shell function/alias that wraps bc Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-11-03 17:24 +0100
                Re: handy shell function/alias that wraps bc gazelle@shell.xmission.com (Kenny McCormack) - 2025-11-03 17:33 +0000
                Re: handy shell function/alias that wraps bc Christian Weisgerber <naddy@mips.inka.de> - 2025-11-03 23:19 +0000
                Re: handy shell function/alias that wraps bc Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-11-04 05:34 +0100
                Re: handy shell function/alias that wraps bc Kaz Kylheku <643-408-1753@kylheku.com> - 2025-11-04 04:40 +0000
                Re: handy shell function/alias that wraps bc Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-11-04 05:57 +0100
                Re: handy shell function/alias that wraps bc Kaz Kylheku <643-408-1753@kylheku.com> - 2025-11-04 00:35 +0000
                Re: handy shell function/alias that wraps bc Kaz Kylheku <643-408-1753@kylheku.com> - 2025-11-04 01:04 +0000
            Re: handy shell function/alias that wraps bc Christian Weisgerber <naddy@mips.inka.de> - 2025-11-03 15:56 +0000
          Re: handy shell function/alias that wraps bc Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-11-03 20:06 +0000
            Re: handy shell function/alias that wraps bc Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-11-03 21:25 +0100
            Re: handy shell function/alias that wraps bc Kaz Kylheku <643-408-1753@kylheku.com> - 2025-11-03 21:11 +0000
    Re: handy shell function/alias that wraps bc Michael Sanders <porkchop@invalid.foo> - 2025-10-31 15:53 +0000
  Re: handy shell function/alias that wraps bc Christian Weisgerber <naddy@mips.inka.de> - 2025-10-31 14:56 +0000
    Re: handy shell function/alias that wraps bc Michael Sanders <porkchop@invalid.foo> - 2025-10-31 15:54 +0000
      Re: handy shell function/alias that wraps bc Nuno Silva <nunojsilva@invalid.invalid> - 2025-11-01 10:43 +0000
        Re: handy shell function/alias that wraps bc Michael Sanders <porkchop@invalid.foo> - 2025-11-01 12:29 +0000
  Re: handy shell function/alias that wraps bc Michael Sanders <porkchop@invalid.foo> - 2025-10-31 17:51 +0000
  Re: handy shell function/alias that wraps bc ram@zedat.fu-berlin.de (Stefan Ram) - 2025-10-31 18:21 +0000
    Re: handy shell function/alias that wraps bc Michael Sanders <porkchop@invalid.foo> - 2025-10-31 19:15 +0000
  Re: handy shell function/alias that wraps bc Ed Morton <mortonspam@gmail.com> - 2025-11-01 11:47 -0500
    Re: handy shell function/alias that wraps bc Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-11-01 20:21 +0000
      Other languages and people's personal issues (Was: handy shell function/alias that wraps bc) gazelle@shell.xmission.com (Kenny McCormack) - 2025-11-01 21:27 +0000
      Re: handy shell function/alias that wraps bc Ed Morton <mortonspam@gmail.com> - 2025-11-02 16:58 -0600
        Re: handy shell function/alias that wraps bc Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-11-03 01:53 +0000
          Re: handy shell function/alias that wraps bc gazelle@shell.xmission.com (Kenny McCormack) - 2025-11-03 02:39 +0000
          Re: handy shell function/alias that wraps bc Ed Morton <mortonspam@gmail.com> - 2025-11-04 16:49 -0600
            Re: handy shell function/alias that wraps bc Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-11-05 00:06 +0000
          Re: handy shell function/alias that wraps bc Kaz Kylheku <643-408-1753@kylheku.com> - 2025-11-04 23:06 +0000

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