c++ float_denorm_style

http://www.cplusplus.com/reference/std/limits/numeric_limits/
http://www.etutorials.org/Programming/Programming+Cpp/Chapter+13.+Library+Reference/13.32+ltlimits/
http://it.kgsu.ru/C_STL/c_stl075.html
http://sharp-generation.narod.ru/Visual_studio.Net/Glava10/lifestudents.html