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# PRInt32
Guaranteed to be a signed 32-bit integer on all platforms.
## Syntax
```{code}
#include <prtypes.h>
typedefdefinition PRInt32;
```
## Description
May be defined as an `int` or a `long`, depending on the platform.
For syntax details for each platform, see
{searchfox}`prtypes.h <nsprpub/pr/include/prtypes.h>`.