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Groups > comp.lang.c++ > #71410

Re: C++ variable names

From Keith Thompson <Keith.S.Thompson+u@gmail.com>
Newsgroups comp.lang.c++
Subject Re: C++ variable names
Date 2020-01-16 00:15 -0800
Organization None to speak of
Message-ID <878sm7hl6a.fsf@nosuchdomain.example.com> (permalink)
References <qvohup$gar$1@dont-email.me> <qvoro0$j6$1@news.albasani.net> <qvotqb$d3l$3@dont-email.me> <qvou3m$5et$1@news.albasani.net> <qvovva$mdn$1@dont-email.me>

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T <T@invalid.invalid> writes:
[...]
> This got it?
>
> C           C++
> float_t     std::float_t
> double_t    std::double_t

float_t and double_t are fairly obscure types defined in <math.h>
in C, and in <cmath> or <math.h> in C++.  float_t is at least as
wide as float, and might be wider and faster; similarly for double_t.
(For example, float_t might be defined as double if double operations
are faster than float operations.)  See the C standard (I think
you have N1570) section 7.12.  I don't know that there would be
any reason to refer to them in Raku.

The predefined floating-point types in both C and C++ are float,
double, and long double.

I'm really not sure what this whole discussion is about.  The types
in the standard library have names defined by the standard library
as specified in the language standard.  You just use those names.
It doesn't make sense to talk about changing them.

If you weren't aware, most of the C standard library headers
are incorporated into the C++ standard library.  Each <foo.h>
C header is available in C++ as <cfoo>, with the declarations in
the std:: namespace.  With very few exceptions, they're the same.
Any decent C++ reference should explain all this.

No offense, but I get the feeling that you have some fundamental
misconception that led you to think that, for example, referring to
int32_t as int32 might make some kind of sense.

Hopefully this means you won't have to post a new question about
size_t and ptrdiff_t, since the answers will be exactly the same.

-- 
Keith Thompson (The_Other_Keith) Keith.S.Thompson+u@gmail.com
    [Note updated email address]
Working, but not speaking, for Philips Healthcare
void Void(void) { Void(); } /* The recursive call of the void */

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Thread

C++ variable names T <T@invalid.invalid> - 2020-01-15 18:31 -0800
  Re: C++ variable names Daniel <danielaparker@gmail.com> - 2020-01-15 18:42 -0800
    Re: C++ variable names T <T@invalid.invalid> - 2020-01-15 18:46 -0800
      Re: C++ variable names Daniel <danielaparker@gmail.com> - 2020-01-15 21:30 -0800
        Re: C++ variable names T <T@invalid.invalid> - 2020-01-15 21:52 -0800
      Re: C++ variable names Louis Krupp <lkrupp@nospam.pssw.com.invalid> - 2020-01-15 23:44 -0700
        Re: C++ variable names T <T@invalid.invalid> - 2020-01-15 22:59 -0800
          Re: C++ variable names Bo Persson <bo@bo-persson.se> - 2020-01-16 08:44 +0100
            Re: C++ variable names T <T@invalid.invalid> - 2020-01-15 23:48 -0800
            Re: C++ variable names David Brown <david.brown@hesbynett.no> - 2020-01-16 10:08 +0100
          Re: C++ variable names Louis Krupp <lkrupp@nospam.pssw.com.invalid> - 2020-01-16 00:43 -0700
            Re: C++ variable names T <T@invalid.invalid> - 2020-01-15 23:51 -0800
              Re: C++ variable names Louis Krupp <lkrupp@nospam.pssw.com.invalid> - 2020-01-16 01:39 -0700
                Re: C++ variable names T <T@invalid.invalid> - 2020-01-16 14:01 -0800
    Re: C++ variable names Lynn McGuire <lynnmcguire5@gmail.com> - 2020-01-16 15:48 -0600
      Re: C++ variable names Öö Tiib <ootiib@hot.ee> - 2020-01-16 14:11 -0800
        Re: C++ variable names Lynn McGuire <lynnmcguire5@gmail.com> - 2020-01-17 18:52 -0600
        Re: C++ variable names Manfred <noname@add.invalid> - 2020-01-18 16:22 +0100
          Re: C++ variable names Öö Tiib <ootiib@hot.ee> - 2020-01-18 10:41 -0800
          Re: C++ variable names Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-01-21 05:31 -0800
      Re: C++ variable names David Brown <david.brown@hesbynett.no> - 2020-01-16 23:32 +0100
      Re: C++ variable names legalize+jeeves@mail.xmission.com (Richard) - 2020-01-19 19:13 +0000
  Re: C++ variable names red floyd <no.spam@its.invalid> - 2020-01-15 18:45 -0800
    Re: C++ variable names T <T@invalid.invalid> - 2020-01-15 18:47 -0800
    Re: C++ variable names Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2020-01-15 21:51 -0800
      Re: C++ variable names red floyd <no.spam@its.invalid> - 2020-01-15 22:44 -0800
        Re: C++ variable names T <T@invalid.invalid> - 2020-01-15 23:00 -0800
  Re: C++ variable names "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2020-01-15 19:40 -0800
    Re: C++ variable names T <T@invalid.invalid> - 2020-01-15 19:58 -0800
      Re: C++ variable names "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2020-01-15 20:12 -0800
    Re: C++ variable names James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-01-15 23:18 -0500
      Re: C++ variable names T <T@invalid.invalid> - 2020-01-15 20:20 -0800
        Re: C++ variable names James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-01-16 12:06 -0800
          Re: C++ variable names T <T@invalid.invalid> - 2020-01-16 14:02 -0800
      Re: C++ variable names "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2020-01-15 20:31 -0800
        Re: C++ variable names David Brown <david.brown@hesbynett.no> - 2020-01-16 11:09 +0100
  Re: C++ variable names Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-01-16 03:52 +0000
    Re: C++ variable names T <T@invalid.invalid> - 2020-01-15 19:59 -0800
      Re: C++ variable names Bo Persson <bo@bo-persson.se> - 2020-01-16 06:33 +0100
        Re: C++ variable names T <T@invalid.invalid> - 2020-01-15 21:53 -0800
  Re: C++ variable names Bonita Montero <Bonita.Montero@gmail.com> - 2020-01-16 06:18 +0100
    Re: C++ variable names T <T@invalid.invalid> - 2020-01-15 21:54 -0800
      Re: C++ variable names Bonita Montero <Bonita.Montero@gmail.com> - 2020-01-16 06:59 +0100
        Re: C++ variable names T <T@invalid.invalid> - 2020-01-15 22:31 -0800
          Re: C++ variable names Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2020-01-16 00:15 -0800
          Re: C++ variable names Bonita Montero <Bonita.Montero@gmail.com> - 2020-01-16 11:25 +0100
            Re: C++ variable names Mister2U@honorific.org - 2020-01-16 11:47 +0000
              Re: C++ variable names Bonita Montero <Bonita.Montero@gmail.com> - 2020-01-16 13:31 +0100
                Re: C++ variable names "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2020-01-16 15:51 -0800
                Re: C++ variable names "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2020-01-16 15:51 -0800
                Re: C++ variable names Manfred <invalid@add.invalid> - 2020-01-17 01:31 +0100
  Re: C++ variable names Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2020-01-15 21:48 -0800
    Re: C++ variable names T <T@invalid.invalid> - 2020-01-15 21:55 -0800
      Re: C++ variable names Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2020-01-16 00:01 -0800
    Re: C++ variable names "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2020-01-15 22:28 -0800
      Re: C++ variable names T <T@invalid.invalid> - 2020-01-15 22:31 -0800
  Re: C++ variable names "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2020-01-15 23:16 -0800
    Re: C++ variable names T <T@invalid.invalid> - 2020-01-15 23:26 -0800
      Re: C++ variable names "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2020-01-15 23:34 -0800
        Re: C++ variable names T <T@invalid.invalid> - 2020-01-15 23:53 -0800
          Re: C++ variable names Louis Krupp <lkrupp@nospam.pssw.com.invalid> - 2020-01-16 03:04 -0700
  C++ variable names James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-01-16 11:51 -0800
    Re: C++ variable names T <T@invalid.invalid> - 2020-01-16 13:58 -0800

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