# 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><aname="table529270003093524"></a><table><theadalign="left"><trid="row706240591093524"><thclass="cellrowborder"valign="top"width="50%"id="mcps1.1.3.1.1"><pid="p1955197407093524"><aname="p1955197407093524"></a><aname="p1955197407093524"></a>Macro Name and Value</p></th><thclass="cellrowborder"valign="top"width="50%"id="mcps1.1.3.1.2"><pid="p1874260149093524"><aname="p1874260149093524"></a><aname="p1874260149093524"></a>Description</p></th></tr></thead><tbody><trid="row630766457093524"><tdclass="cellrowborder"valign="top"width="50%"headers="mcps1.1.3.1.1 "><pid="p2129036871093524"><aname="p2129036871093524"></a><aname="p2129036871093524"></a><ahref="zh-cn_topic_0000001055198076.md#ga0bf2a26a1f15f79f80319edbaa5cc9a5">__BITS_PER_LONG</a> 32</p></td><tdclass="cellrowborder"valign="top"width="50%"headers="mcps1.1.3.1.2 "><pid="p1505462970093524"><aname="p1505462970093524"></a><aname="p1505462970093524"></a>Defines the number of bits of the long data type. </p></td></tr></tbody></table>