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Mar 14, 2025
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Improve <system_error> functions page #5239

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Improve `<system_error>` functions page
Rageking8 Mar 14, 2025
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Clean up `<system_error>` functions page
Rageking8 Mar 14, 2025
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23 changes: 11 additions & 12 deletions docs/standard-library/system-error-functions.md
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Original file line number Diff line number Diff line change
@@ -1,9 +1,8 @@
---
description: "Learn more about: <system_error> functions"
title: "<system_error> functions"
description: "Learn more about: <system_error> functions"
ms.date: "03/15/2019"
f1_keywords: ["system_error/std::generic_category", "system_error/std::make_error_code", "system_error/std::make_error_condition", "system_error/std::system_category"]
ms.assetid: 57d6f15f-f0b7-4e2f-80fe-31d3c320ee33
helpviewer_keywords: ["std::generic_category", "std::make_error_code", "std::make_error_condition", "std::system_category"]
---
# `<system_error>` functions
Expand All @@ -18,20 +17,24 @@ const error_category& generic_category() noexcept;

### Remarks

The `generic_category` object is an implementation of [error_category](../standard-library/error-category-class.md).
The `generic_category` object is an implementation of [error_category](error-category-class.md).

## <a name="is_error_code_enum_v"></a> is_error_code_enum_v

A helper variable template for the [`is_error_code_enum`](is-error-code-enum-class.md) value.

```cpp
template <class T>
inline constexpr bool is_error_code_enum_v = is_error_code_enum<T>::value;
constexpr bool is_error_code_enum_v = is_error_code_enum<T>::value;
```

## <a name="is_error_condition_enum_v"></a> is_error_condition_enum_v

A helper variable template for the [`is_error_condition_enum`](is-error-condition-enum-class.md) value.

```cpp
template <class T>
inline constexpr bool is_error_condition_enum_v = is_error_condition_enum<T>::value;
constexpr bool is_error_condition_enum_v = is_error_condition_enum<T>::value;
```

## <a name="make_error_code"></a> make_error_code
Expand All @@ -51,8 +54,6 @@ The `std::errc` enumeration value to store in the error code object.

The error code object.

### Remarks

## <a name="make_error_condition"></a> make_error_condition

Creates an error condition object.
Expand All @@ -64,22 +65,20 @@ error_condition make_error_condition(std::errc error) noexcept;
### Parameters

*error*\
The `std::errc` enumeration value to store in the error code object.
The `std::errc` enumeration value to store in the error condition object.

### Return Value

The error condition object.

### Remarks

## <a name="system_category"></a> system_category

Represents the category for errors caused by low-level system overflows.
Represents the category for operating system errors.

```cpp
const error_category& system_category() noexcept;
```

### Remarks

The `system_category` object is an implementation of [error_category](../standard-library/error-category-class.md).
The `system_category` object is an implementation of [error_category](error-category-class.md).