Re: qsort() function misunderstanding

From	glen herrmannsfeldt <gah@ugcs.caltech.edu>
Newsgroups	comp.lang.c
Subject	Re: qsort() function misunderstanding
Date	2015-11-26 08:18 +0000
Organization	Aioe.org NNTP Server
Message-ID	<n36f9e$8ac$1@speranza.aioe.org> (permalink)
References	(6 earlier) <15e660c6-9a01-42d4-aa31-0466dd39eb75@googlegroups.com> <n34b0c$759$1@speranza.aioe.org> <729d46e5-e7ef-457d-a47c-371e03a5cddb@googlegroups.com> <n35fct$979$1@speranza.aioe.org> <56128d91-326a-4d9d-bd32-8e6df70f8516@googlegroups.com>

Show all headers | View raw

supercat@casperkitty.com wrote:
>> supercat wrote:
>> > As originally conceived, C was a language which would make it possible for a
>> > simple compiler to yield efficient code by allowing programmers to specify
>> > things at a somewhat lower level than was typically allowed in other
>> > languages.  A simple Pascal compiler given:

(snip, then I wrote)

>> It doesn't take all that big a compiler to figure out array
>> indexing, though. 

> Of course.  FORTRAN compilers were doing it in the 1960s, though the
> language required that array subscripts take certain particular forms.

The standard did say that, but allowing more general expressions was
likely the most common extension. The IBM S/360 compilers, including
Fortran H which for many years was the favorite optimizing compiler,
even allows for REAL subscripts.

I would sometimes translate BASIC programs to Fortran, with all 
variables being REAL. It is nice to use them for subscripts.

-- glen

Thread

qsort() function misunderstanding Alla _ <modelling.data@gmail.com> - 2015-11-24 01:48 -0800
  Re: qsort() function misunderstanding Richard Heathfield <rjh@cpax.org.uk> - 2015-11-24 10:32 +0000
    Re: qsort() function misunderstanding Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-24 11:08 +0000
      Re: qsort() function misunderstanding Richard Heathfield <rjh@cpax.org.uk> - 2015-11-24 12:03 +0000
        Re: qsort() function misunderstanding Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-24 16:12 +0000
    Re: qsort() function misunderstanding Alla _ <modelling.data@gmail.com> - 2015-11-24 03:33 -0800
      Re: qsort() function misunderstanding Richard Heathfield <rjh@cpax.org.uk> - 2015-11-24 12:05 +0000
        Re: qsort() function misunderstanding glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-24 13:52 +0000
          Re: qsort() function misunderstanding Ken Brody <kenbrody@spamcop.net> - 2015-11-24 10:01 -0500
        Re: qsort() function misunderstanding Alla _ <modelling.data@gmail.com> - 2015-11-24 06:04 -0800
          Re: qsort() function misunderstanding Richard Heathfield <rjh@cpax.org.uk> - 2015-11-24 14:16 +0000
      Re: qsort() function misunderstanding James Kuyper <jameskuyper@verizon.net> - 2015-11-24 07:32 -0500
        Re: qsort() function misunderstanding Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-24 16:43 +0000
          Re: qsort() function misunderstanding glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-25 05:58 +0000
            Re: qsort() function misunderstanding Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-25 11:34 +0000
              Re: qsort() function misunderstanding Richard Heathfield <rjh@cpax.org.uk> - 2015-11-25 12:45 +0000
                Re: qsort() function misunderstanding Alla _ <modelling.data@gmail.com> - 2015-11-26 02:18 -0800
                Re: qsort() function misunderstanding Richard Heathfield <rjh@cpax.org.uk> - 2015-11-26 10:45 +0000
              Re: qsort() function misunderstanding glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-25 14:46 +0000
          Re: qsort() function misunderstanding Alla _ <modelling.data@gmail.com> - 2015-11-25 00:51 -0800
            Re: qsort() function misunderstanding James Kuyper <jameskuyper@verizon.net> - 2015-11-25 08:12 -0500
              Re: qsort() function misunderstanding Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-25 14:02 +0000
                Re: qsort() function misunderstanding James Kuyper <jameskuyper@verizon.net> - 2015-11-25 11:37 -0500
                Re: qsort() function misunderstanding Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-11-25 17:36 +0000
  Re: qsort() function misunderstanding Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-24 03:30 -0800
    Re: qsort() function misunderstanding Alla _ <modelling.data@gmail.com> - 2015-11-24 03:48 -0800
      Re: qsort() function misunderstanding Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-24 06:29 -0800
    pre/post increments (was Re: qsort() function misunderstanding) Ken Brody <kenbrody@spamcop.net> - 2015-11-24 09:55 -0500
  Re: qsort() function misunderstanding Alla _ <modelling.data@gmail.com> - 2015-11-24 06:06 -0800
  Re: qsort() function misunderstanding Barry Schwarz <schwarzb@dqel.com> - 2015-11-24 07:33 -0800
  Re: qsort() function misunderstanding Keith Thompson <kst-u@mib.org> - 2015-11-24 09:04 -0800
    Re: qsort() function misunderstanding Richard Heathfield <rjh@cpax.org.uk> - 2015-11-24 17:17 +0000
      Re: qsort() function misunderstanding Geoff <geoff@invalid.invalid> - 2015-11-24 10:03 -0800
        Re: qsort() function misunderstanding Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-11-24 13:31 -0500
          Re: qsort() function misunderstanding Geoff <geoff@invalid.invalid> - 2015-11-24 12:34 -0800
            Re: qsort() function misunderstanding Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-11-24 16:02 -0500
              Re: qsort() function misunderstanding supercat@casperkitty.com - 2015-11-24 15:18 -0800
                Re: qsort() function misunderstanding Chad <cdalten@gmail.com> - 2015-11-24 16:15 -0800
                Re: qsort() function misunderstanding Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-11-24 23:51 -0800
            Re: qsort() function misunderstanding Alla _ <modelling.data@gmail.com> - 2015-11-25 01:01 -0800
              Re: qsort() function misunderstanding glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-25 12:53 +0000
                Re: qsort() function misunderstanding supercat@casperkitty.com - 2015-11-25 10:15 -0800
                Re: qsort() function misunderstanding glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-25 23:14 +0000
                Re: qsort() function misunderstanding supercat@casperkitty.com - 2015-11-25 16:33 -0800
                Re: qsort() function misunderstanding glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-26 08:18 +0000
      Re: qsort() function misunderstanding Ian Collins <ian-news@hotmail.com> - 2015-11-25 10:41 +1300
        Re: qsort() function misunderstanding Richard Heathfield <rjh@cpax.org.uk> - 2015-11-24 22:08 +0000
    Re: qsort() function misunderstanding Alla _ <modelling.data@gmail.com> - 2015-11-25 00:53 -0800
  Re: qsort() function misunderstanding Alla _ <modelling.data@gmail.com> - 2015-11-25 09:07 -0800

csiph-web