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# nng_log_level
## NAME
nng_log_level --- severity level for logging messages
## SYNOPSIS
```c
#include <nng/nng.h>
typedef enum nng_log_level {
NNG_LOG_NONE = 0, // used for filters only, NNG suppresses these
NNG_LOG_ERR = 3,
NNG_LOG_WARN = 4,
NNG_LOG_NOTICE = 5,
NNG_LOG_INFO = 6,
NNG_LOG_DEBUG = 7
} nng_log_level;
void nng_log_set_level(nng_log_level level);
nng_log_level nng_log_get_level(void);
```
## DESCRIPTION
The `nng_log_level` type represents a severity for logged messages.
These levels correspond to those found in the UNIX `syslog` subsystem,
although applications should not depend upon the values being identical.
The `nng_log_set_level` function is used to set the minimum severity to _level_ for processing log messages.
Any messages with a less severe rating are not processed and simply are discarded.
Use `NNG_LOG_NONE` to suppress all log messages.
Use `NNG_LOG_DEBUG` to receive all log messages.
The `nng_log_get_level` function returns the current log level, which can be useful
to elide processing to create log content that will simply be discarded anyway.
## SEE ALSO
[nng_log](./nng_log.md),
[nng_log_facility](./nng_log_facility.md),
[nng_log_logger](./nng_log_logger.md)
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