= nng_version(3)
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//
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// Copyright 2020 Staysail Systems, Inc. <info@staysail.tech>
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// Copyright 2018 Capitar IT Group BV <info@capitar.com>
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//
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// This document is supplied under the terms of the MIT License, a
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// copy of which should be located in the distribution where this
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// file was obtained (LICENSE.txt). A copy of the license may also be
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// found online at https://opensource.org/licenses/MIT.
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//
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== NAME
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nng_version - report library version
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== SYNOPSIS
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[source, c]
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----
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#include <nng/nng.h>
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const char * nng_version(void);
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----
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== DESCRIPTION
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The `nng_version()` function returns a human readable ((version number))
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for _NNG_.
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Additionally, compile time version information is available
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via some predefined macros:
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[horizontal]
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((`NNG_MAJOR_VERSION`)):: Major version number.
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((`NNG_MINOR_VERSION`)):: Minor version number.
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((`NNG_PATCH_VERSION`)):: Patch version number.
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_NNG_ is developed and released using
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http://www.semver.org[Semantic Versioning 2.0], and
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the version numbers reported refer to both the API and the
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library itself.
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(The ((ABI)) -- ((application binary interface)) -- between the
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library and the application is controlled in a similar, but different
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manner depending upon the link options and how the library is built.)
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== RETURN VALUES
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Null-terminated string containing the library version number.
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== ERRORS
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None.
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== SEE ALSO
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[.text-left]
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xref:libnng.3.adoc[libnng(3)],
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xref:nng.7.adoc[nng(7)]
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