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nlohmann
47 lines
1.0 KiB
Markdown
47 lines
1.0 KiB
Markdown
# <small>nlohmann::basic_json::</small>is_number_float
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```cpp
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constexpr bool is_number_float() const noexcept;
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```
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This function returns `#!cpp true` if and only if the JSON value is a floating-point number. This excludes signed and
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unsigned integer values.
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## Return value
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`#!cpp true` if type is a floating-point number, `#!cpp false` otherwise.
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## Exception safety
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No-throw guarantee: this member function never throws exceptions.
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## Complexity
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Constant.
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## Examples
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??? example
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The following code exemplifies `is_number_float()` for all JSON types.
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```cpp
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--8<-- "examples/is_number_float.cpp"
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```
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Output:
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```json
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--8<-- "examples/is_number_float.output"
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```
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## See also
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- [is_number()](is_number.md) check if the value is a number
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- [is_number_integer()](is_number_integer.md) check if the value is an integer or unsigned integer number
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- [is_number_unsigned()](is_number_unsigned.md) check if the value is an unsigned integer number
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## Version history
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- Added in version 1.0.0.
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