fixes #543 Add logging support framework

1 files changed, 42 insertions, 0 deletions

diff --git a/docs/man/nng_log_set_level.adoc b/docs/man/nng_log_set_level.adoc
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+++ b/docs/man/nng_log_set_level.adoc
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+= nng_log_set_level(3)
+//
+// Copyright 2024 Staysail Systems, Inc. <info@staysail.tech>
+//
+// This document is supplied under the terms of the MIT License, a
+// copy of which should be located in the distribution where this
+// file was obtained (LICENSE.txt).  A copy of the license may also be
+// found online at https://opensource.org/licenses/MIT.
+//
+
+== NAME
+
+nng_log_set_level - set minimum level for logging messagse
+
+== SYNOPSIS
+
+[source, 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);
+----
+
+== DESCRIPTION
+
+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.
+
+== SEE ALSO
+
+xref:nng_log_set_facility.3.adoc[nng_log_set_facility(3)]