constexpr bool is_number_float() const noexcept;
This function returns #!cpp true
if and only if the JSON value is a floating-point number. This excludes signed and unsigned integer values.
#!cpp true
if type is a floating-point number, #!cpp false
otherwise.
No-throw guarantee: this member function never throws exceptions.
Constant.
??? example
The following code exemplifies `is_number_float()` for all JSON types. ```cpp --8<-- "examples/is_number_float.cpp" ``` Output: ```json --8<-- "examples/is_number_float.output" ```