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# PR_PostSemaphore
Increments the value of a specified semaphore.
## Syntax
```{code}
#include <pripcsem.h>
NSPR_API(PRStatus) PR_PostSemaphore(PRSem *sem);
```
### Parameter
The function has the following parameter:
`sem`
: A pointer to a `PRSem` structure returned from a call to
{ref}`PR_OpenSemaphore`.
### Returns
{ref}`PRStatus`