Groups > comp.graphics.apps.gnuplot > #1340

Re: Special functions in gnuplot

From	sfeam <sfeam@users.sourceforge.net>
Newsgroups	comp.graphics.apps.gnuplot
Subject	Re: Special functions in gnuplot
Followup-To	comp.graphics.apps.gnuplot
Date	2012-08-18 10:56 -0700
Organization	gnuplot development team
Message-ID	<k0okvp$ard$1@dont-email.me> (permalink)
References	<1694fa1b-c5e4-4561-8594-40d67337d065@googlegroups.com> <f5718a50-fb47-41de-ae71-a2acd94138bb@googlegroups.com>

Followups directed to: comp.graphics.apps.gnuplot

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hogney@gmail.com wrote:

> I'm not too familiar with the gnuplot source, but I took a look. Yes,
> it involves a confusing spaghetti of name substitution. eval.c maps
> user input to internal names. Gamma function is defined in specfun.c
> from line 296 to line 553.

That code is only a last resort fallback that is compiled if the
system does not provide a gamma function in the math library.
Normally "gamma(x)" from the gnuplot command line will use the lgamma() 
function from the system library libm.

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Special functions in gnuplot boruun@gmail.com - 2012-08-10 20:34 -0700
  Re: Special functions in gnuplot sfeam <sfeam@users.sourceforge.net> - 2012-08-10 23:05 -0700
  Re: Special functions in gnuplot boruun@gmail.com - 2012-08-14 12:39 -0700
  Re: Special functions in gnuplot boruun@gmail.com - 2012-08-14 12:37 -0700
    Re: Special functions in gnuplot Dr Engelbert Buxbaum <engelbert_buxbaum@hotmail.com> - 2012-09-11 11:26 -0400
  Re: Special functions in gnuplot hogney@gmail.com - 2012-08-18 08:34 -0700
    Re: Special functions in gnuplot sfeam <sfeam@users.sourceforge.net> - 2012-08-18 10:56 -0700

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