Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.c++ > #15043

Re: Setting floating point variable as infinite

Show all headers | View raw

Leigh Johnston wrote:

> Yes there is a better way, use: std::min_element

Considering that the values being compared aren't stored and, instead, are 
calculated by an operator which is called for this specific purpose, doesn't 
std::min_element require more than n calls to that operator, n being 
container::size() ?

Another inconvenience is that std::min_element only returns an iterator 
pointing to the element which relates to the smallest value.  If the 
objective is to determine that particular value then using std::min_element 
requires an extra call to that operator.

Meanwhile, the method which has been presented and relies on 
std::numeric_limits<float>::infinity() only requires n calls to the 
operator, and in the end the smallest value is already provided.


Rui Maciel

Back to comp.lang.c++ | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Setting floating point variable as infinite Rui Maciel <rui.maciel@gmail.com> - 2012-03-23 12:27 +0000
  Re: Setting floating point variable as infinite Marc <marc.glisse@gmail.com> - 2012-03-23 12:34 +0000
    Re: Setting floating point variable as infinite glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-03-23 12:39 +0000
      Re: Setting floating point variable as infinite gwowen <gwowen@gmail.com> - 2012-03-23 06:21 -0700
      Re: Setting floating point variable as infinite Rui Maciel <rui.maciel@gmail.com> - 2012-03-23 14:39 +0000
        Re: Setting floating point variable as infinite glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-03-23 20:06 +0000
  Re: Setting floating point variable as infinite Victor Bazarov <v.bazarov@comcast.invalid> - 2012-03-23 10:32 -0400
    Re: Setting floating point variable as infinite Rui Maciel <rui.maciel@gmail.com> - 2012-03-23 15:03 +0000
      Re: Setting floating point variable as infinite Victor Bazarov <v.bazarov@comcast.invalid> - 2012-03-23 11:50 -0400
        Re: Setting floating point variable as infinite Rui Maciel <rui.maciel@gmail.com> - 2012-03-23 19:01 +0000
          Re: Setting floating point variable as infinite Christian Gollwitzer <auriocus@gmx.de> - 2012-03-23 20:26 +0100
          Re: Setting floating point variable as infinite Victor Bazarov <v.bazarov@comcast.invalid> - 2012-03-23 19:10 -0400
            Re: Setting floating point variable as infinite Rui Maciel <rui.maciel@gmail.com> - 2012-03-24 11:43 +0000
        Re: Setting floating point variable as infinite Miles Bader <miles@gnu.org> - 2012-03-24 09:46 +0900
          Re: Setting floating point variable as infinite Victor Bazarov <v.bazarov@comcast.invalid> - 2012-03-23 23:42 -0400
            Re: Setting floating point variable as infinite Rui Maciel <rui.maciel@gmail.com> - 2012-03-24 11:31 +0000
            Re: Setting floating point variable as infinite Miles Bader <miles@gnu.org> - 2012-03-24 23:41 +0900
    Re: Setting floating point variable as infinite Andrea Venturoli <ml.diespammer@netfence.it> - 2012-03-24 13:05 +0100
      Re: Setting floating point variable as infinite Victor Bazarov <v.bazarov@comcast.invalid> - 2012-03-24 15:44 -0400
  Re: Setting floating point variable as infinite Leigh Johnston <leigh@i42.co.uk> - 2012-03-24 12:30 +0000
    Re: Setting floating point variable as infinite Gareth Owen <gwowen@gmail.com> - 2012-03-25 07:52 +0100
    Re: Setting floating point variable as infinite Rui Maciel <rui.maciel@gmail.com> - 2012-03-25 12:38 +0100
      Re: Setting floating point variable as infinite Leigh Johnston <leigh@i42.co.uk> - 2012-03-25 13:36 +0100
        Re: Setting floating point variable as infinite Leigh Johnston <leigh@i42.co.uk> - 2012-03-25 14:00 +0100
          Re: Setting floating point variable as infinite Leigh Johnston <leigh@i42.co.uk> - 2012-03-25 14:05 +0100
            Re: Setting floating point variable as infinite Rui Maciel <rui.maciel@gmail.com> - 2012-03-25 16:54 +0100

csiph-web