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half: half_float::literal Namespace Reference
half  2.2
IEEE 754-based half-precision floating-point library
Functions
half_float::literal Namespace Reference

Library-defined half-precision literals. More…

Functions

half operator""_h (long double value)
 Half literal. More…
 

Detailed Description

Library-defined half-precision literals.

Import this namespace to enable half-precision floating-point literals:

using namespace half_float::literal;
half_float::half = 4.2_h;
half_float::half
Half-precision floating-point type.
Definition: half.hpp:2056
half_float::literal
Library-defined half-precision literals.
Definition: half.hpp:444

Function Documentation

◆ operator""_h()

half operator""_h ( long double  value)
inline

Half literal.

While this returns a properly rounded half-precision value, half literals can unfortunately not be constant expressions due to rather involved conversions. So don’t expect this to be a literal literal without involving conversion operations at runtime. It is a convenience feature, not a performance optimization.

Parameters
valueliteral value
Returns
half with of given value (possibly rounded)
Exceptions
FE_OVERFLOW,…UNDERFLOW,…INEXACTaccording to rounding