31 Input/output library [input.output]

31.5 Iostreams base classes [iostreams.base]

31.5.5 ios_base manipulators [std.ios.manip] floatfield manipulators [floatfield.manip]

Each function specified in this subclause is a designated addressable function ([namespace.std]).
ios_base& fixed(ios_base& str);
Effects: Calls str.setf(ios_base​::​fixed, ios_base​::​floatfield).
Returns: str.
ios_base& scientific(ios_base& str);
Effects: Calls str.setf(ios_base​::​scientific, ios_base​::​floatfield).
Returns: str.
ios_base& hexfloat(ios_base& str);
Effects: Calls str.setf(ios_base​::​fixed | ios_base​::​scientific, ios_base​::​floatfield).
Returns: str.
[Note 1: 
ios_base​::​hex cannot be used to specify a hexadecimal floating-point format, because it is not part of ios_base​::​floatfield (Table 122).
— end note]
ios_base& defaultfloat(ios_base& str);
Effects: Calls str.unsetf(ios_base​::​floatfield).
Returns: str.