global.hpp File Reference

Global definitions. More...

#include <string>
#include <ostream>
#include <iostream>
#include <sstream>
#include <mutex>

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Classes
class	FST::syncout
	Serializes textual reporting from concurrent threads. More...

Namespaces
namespace	FST
	The Feature Selection Toolbox 4 library: every library component – data access, criteria and classifiers, search algorithms, result trackers and the global infrastructure – lives in this namespace.

Enumerations
enum	FST::OutputDetail { FST::SILENT =0 , FST::NORMAL =1 , FST::DETAILED =2 }
	search algorithms' output extent More...

Functions
void	FST::notify (const std::string msg)
	Prints msg followed by a newline via syncout::print(); a no-op unless the preprocessor macro DEBUG is defined at compile time. Used throughout FST4 for lightweight diagnostic tracing.
void	FST::notify (const std::string msg1, const double num, const std::string msg2="")
	Prints msg1, num and msg2 concatenated, DEBUG builds only (see notify(const std::string)).
void	FST::notify (const std::string msg1, const double num1, const std::string msg2, const double num2, const std::string msg3="")
	Prints msg1, num1, msg2, num2, msg3 concatenated, DEBUG builds only (see notify(const std::string)).
void	FST::notify (const std::string msg1, const double num1, const std::string msg2, const double num2, const std::string msg3, const double num3, const std::string msg4="")
	Prints msg1, num1, msg2, num2, msg3, num3, msg4 concatenated, DEBUG builds only (see notify(const std::string)).
template<typename VALUE>
VALUE	FST::maxf (const VALUE &x, const VALUE &y)
	Returns the greater of x and y (strict '>' comparison; ties return y).
template<typename VALUE>
VALUE	FST::minf (const VALUE &x, const VALUE &y)
	Returns the smaller of x and y (strict '<' comparison; ties return y).

Detailed Description

Global definitions.

======================================================================

Feature Selection Toolbox 4 source code

Author

Petr Somol (somol.nosp@m.@uti.nosp@m.a.cas.nosp@m..cz) with collaborators, see Contacts at https://fst.utia.cz

Version 4 was developed with Anthropic Claude models as coding assistants: Claude Fable 5 for the 2026 development (with minor contributions by Claude Opus 5), Claude Fable 5.1 for the pre-publication reviews of the full codebase, and Claude Opus 4.5 for the December 2025 audit of the FST3 codebase; design, decisions, review and acceptance are human work

Date

March 2011 (last updated July 2026)

Version

4.2.0

Note

FST4 was developed using MinGW-W64 g++ 15.2 and requires

• a C++17 conforming compiler and standard library (no Boost, unlike FST3),

• (optionally) LibSVM (http://www.csie.ntu.edu.tw/~cjlin/libsvm/, version 3.37; not distributed with FST4 — drop svm.cpp/svm.h into ./libsvm/, see libsvm/readme.txt)

Note that LibSVM is required for SVM related tools only. Ready-to-run SVM examples: demos/demo12t.cfg, demo23.cfg, demo25t.cfg and demo32t.cfg (configurations of the fst4 command-line tool).