Simplify configuration.

Remove support for (outdated) <strstream>, require <sstream>.
Require uint32_t for now, defined in stdint.h according to C99.
Some general cleanup and more documentation.

eo/src/utils/eoHowMany.h

@@ -4,7 +4,7 @@
 // eoHowMany_h.h
 //   Base class for choosing a number of guys to apply something from a popsize
 // (c) Marc Schoenauer, 2000
-/* 
+/*
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
@@ -30,11 +30,11 @@
  *  Typically, is used in selection / replacement procedures, e.g.
  *             the number of offspring from the number of parents, or
  *             the number of survivors for an eoReduce functor, ...
- * 
- * Such construct is very useful because in some cases you might not know the 
- * population size that will enter the replacement. For instance, you 
- * cannot simply have a pre-computed (double) rate of 1/popSize 
- * if you want to select or kill just 1 guy. Using an eoHowMany 
+ *
+ * Such construct is very useful because in some cases you might not know the
+ * population size that will enter the replacement. For instance, you
+ * cannot simply have a pre-computed (double) rate of 1/popSize
+ * if you want to select or kill just 1 guy. Using an eoHowMany
  * allows one to modify the population size without touching anything else.
  *
  * There are 4 possible way to compute the return value from the argument:
@@ -49,11 +49,11 @@
  * It has 2 private members, a double and an integer to cover all cases
  *
  * Example use: in <a href="class_eogeneralbreeder.html">eoGeneralBreeder.h</a>
- * Example reading from parser: in 
+ * Example reading from parser: in
  *         <a href="make_algo_scalar_h-source.html">do/make_algo_scalar.h line 141</a>
 
- * MS 10/04/2002: 
- *    Added the possibility to have a negative number - 
+ * MS 10/04/2002:
+ *    Added the possibility to have a negative number -
  *        when treated as a number: returns then (size - combien)
  *    Should not modify anything when a positive number is passed in the ctor
  *
@@ -64,20 +64,12 @@
  * It is an eoPersistent because we need to be able to use eoParamValue<eoHowMany>
  */
 
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#ifdef HAVE_SSTREAM
 #include <sstream>
-#else
-#include <strstream>
-#endif
 
 class eoHowMany : public eoPersistent
 {
 public:
-  /** Original Ctor from direct rate + bool 
+  /** Original Ctor from direct rate + bool
       @param rate    the rate, OR the integer to store, depending on 2nd arg.
       @param _interpret_as_rate to tell whether the rate actually is a rate
   */
@@ -102,18 +94,18 @@ public:
       }
   }
 
-  /** Ctor from an int - both from int and unsigned int are needed 
+  /** Ctor from an int - both from int and unsigned int are needed
    *     to avoid ambiguity with the Ctor from a double */
   eoHowMany(int _combien) : rate(0.0), combien(_combien) {}
 
-  /** Ctor from an unsigned int - both from int and unsigned int are needed 
+  /** Ctor from an unsigned int - both from int and unsigned int are needed
    *     to avoid ambiguity with the Ctor from a double */
   eoHowMany(unsigned int _combien) : rate(0.0), combien(_combien) {}
 
   /// Virtual dtor. They are needed in virtual class hierarchies.
   virtual ~eoHowMany() {}
 
-  /** Does what it was designed for 
+  /** Does what it was designed for
    *  - combien==0 : return rate*_size
    *  - else
    *    - combien>0 : return combien (regardless of _size)
@@ -135,7 +127,7 @@ public:
     return unsigned(combien);
   }
 
-  virtual void printOn(std::ostream& _os) const 
+  virtual void printOn(std::ostream& _os) const
   {
     if (combien == 0)
       _os << 100*rate << "% ";
@@ -145,7 +137,7 @@ public:
 
   }
 
-  virtual void readFrom(std::istream& _is) 
+  virtual void readFrom(std::istream& _is)
    {
     std::string value;
     _is >> value;
@@ -163,12 +155,8 @@ public:
 	interpret_as_rate = true;
 	_value.resize(pos);	   // get rid of %
       }
-    
-#ifdef HAVE_SSTREAM
+
     std::istringstream is(_value);
-#else
-    std::istrstream is(_value.c_str());
-#endif
     is >> rate;
     // now store
     if (interpret_as_rate)
@@ -193,7 +181,7 @@ public:
       combien = -combien;
     return (*this);
   }
-  
+
 private :
   double rate;
   int combien;