util.h

   1 /*
   2 OOPoker
   3
   4 Copyright (c) 2010 Lode Vandevenne
   5 All rights reserved.
   6
   7 This file is part of OOPoker.
   8
   9 OOPoker is free software: you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation, either version 3 of the License, or
  12 (at your option) any later version.
  13
  14 OOPoker is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with OOPoker.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 #pragma once
  24
  25 #include <sstream>
  26
  27
  28 //this can be used to get the correct index of previous and next players compared to you or the dealer
  29 template<typename T, typename U>
  30 T wrap(T a, U high) //wraps in range [0,high[, high NOT included!
  31 {
  32   if(high == 0) return 0;
  33
  34   if(a < 0) a += ((long)((-a) / (T)high) + 1) * ((T)high);
  35   if(a >= (T)high) a -= ((long)((a - high) / (T)high) + 1) * ((T)high);
  36
  37   return a;
  38 }
  39
  40 //convert any variable to a string
  41 //usage: std::string str = valtostr(25454.91654654f);
  42 template<typename T>
  43 std::string valtostr(const T& val)
  44 {
  45   std::ostringstream sstream;
  46   sstream << val;
  47   return sstream.str();
  48 }
  49
  50 //convert string to a variable of type T
  51 template<typename T>
  52 T strtoval(const std::string& s)
  53 {
  54   std::istringstream sstream(s);
  55   T val;
  56   sstream >> val;
  57   return val;
  58 }
  59
  60 /*
  61 getNearestRoundNumber: returns a number near the input, but it'll be a nice round value.
  62 The result will always be smaller than or equal to the input. If the input is non-zero, the
  63 number will never be zero.
  64 It can return values such as 0, 1, 2, 5, 10, 20, 50, 100, 200, 500, 1000, 2000, ...
  65 */
  66 int getNearestRoundNumber(int i);