http://benji3up2kxewkqfcq7buxk2xd6zwy3zggnurkrm3l4cvwy2iipvyyad.onion/mirrors/gmpdoc/C_002b_002b-Formatted-Output.html
Function: ostream& operator<< (ostream& stream , const mpf_t op ) ¶ Print op to stream , using its ios formatting settings. ios::width is reset to 0 after output, the same as the standard ostream operator<< routines do. The decimal point follows the standard library float operator<< , which
on recent systems means the std::locale imbued on stream .