# bitsperlong.h<a name="ZH-CN_TOPIC_0000001055078101"></a>

## **Overview**<a name="section944486675093524"></a>

**Related Modules:**

[UTILS](zh-cn_topic_0000001055198076.md)

**Description:**

Defines the number of bits of the long data type. 

**Since:**

1.0

**Version:**

1.0

## **Summary**<a name="section1719038578093524"></a>

## Macros<a name="define-members"></a>

<a name="table529270003093524"></a>
<table><thead align="left"><tr id="row706240591093524"><th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.1"><p id="p1955197407093524"><a name="p1955197407093524"></a><a name="p1955197407093524"></a>Macro Name and Value</p>
</th>
<th class="cellrowborder" valign="top" width="50%" id="mcps1.1.3.1.2"><p id="p1874260149093524"><a name="p1874260149093524"></a><a name="p1874260149093524"></a>Description</p>
</th>
</tr>
</thead>
<tbody><tr id="row630766457093524"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.1 "><p id="p2129036871093524"><a name="p2129036871093524"></a><a name="p2129036871093524"></a><a href="zh-cn_topic_0000001055198076.md#ga0bf2a26a1f15f79f80319edbaa5cc9a5">__BITS_PER_LONG</a>&nbsp;&nbsp;&nbsp;32</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.1.3.1.2 "><p id="p1505462970093524"><a name="p1505462970093524"></a><a name="p1505462970093524"></a>Defines the number of bits of the long data type. </p>
</td>
</tr>
</tbody>
</table>