update ceph source to reef 18.1.2

[ceph.git] / ceph / src / jaegertracing / opentelemetry-cpp / third_party / nlohmann-json / doc / mkdocs / docs / api / basic_json / is_number_integer.md

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+# <small>nlohmann::basic_json::</small>is_number_integer
+
+```cpp
+constexpr bool is_number_integer() const noexcept;
+```
+
+This function returns `#!cpp true` if and only if the JSON value is a signed or unsigned integer number. This excludes
+floating-point values.
+    
+## Return value
+
+`#!cpp true` if type is an integer or unsigned integer number, `#!cpp false` otherwise.
+
+## Exception safety
+
+No-throw guarantee: this member function never throws exceptions.
+
+## Complexity
+
+Constant.
+
+## Examples
+
+??? example
+
+    The following code exemplifies `is_number_integer()` for all JSON types.
+    
+    ```cpp
+    --8<-- "examples/is_number_integer.cpp"
+    ```
+    
+    Output:
+    
+    ```json
+    --8<-- "examples/is_number_integer.output"
+    ```
+
+## See also
+
+- [is_number()](is_number.md) check if value is a number
+- [is_number_unsigned()](is_number_unsigned.md) check if value is an unsigned integer number
+- [is_number_float()](is_number_float.md) check if value is a floating-point number
+
+## Version history
+
+- Added in version 1.0.0.
+- Extended to also return `#!cpp true` for unsigned integers in 2.0.0.