Re: [Gnuplot-info] integer vs. floating point division

[Ethan M. <eam...@gm...>]

On Tue, Nov 14, 2017 at 3:13 PM, David Kastrup <da...@gn...> wrote:

> Ethan Merritt <eam...@gm...> writes:
>
> > On Tue, Nov 14, 2017 at 1:39 PM, theozh <th...@gm...> wrote:
> >> as described in gnuplot help, gnuplot does integer divison if the
> >> dividend and the divisors are integers.
> >> As a normal user, you don't expect this
> >
> > [shrug]  integer division is "normal" for most programming and
> > scripting languages.
>
> Octave: 0.50000

Guile: 1/2
> awk: 0.5
> Perl: 0.5
> Lua: 0.5
> Python: 0
> bc: 0
> Bash: 0
> Pascal: 0.5
> Fortran: 0
>
> Now I'll grant you Fortran and Python.  The rest either gives 0.5 or is
> not intended for floating point calculations anyway.
>

You left out the most relevant of all.
Gnuplot is written in C and uses C language code for internal and
user-visible evaluations.

[now I'm nit-picking...]

Lua doesn't have integer variables, so there the question is moot.

Ruby:
stonelion [186] ruby
print 1/2, "\n"
0


   Ethan



> Arguably Octave is the most relevantly similar in scope.
>
> --
> David Kastrup
>
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