1.\" Copyright (c) 2011 The FreeBSD Foundation 2.\" 3.\" This documentation was written by David Chisnall under sponsorship from 4.\" the FreeBSD Foundation. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 16.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 19.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25.\" SUCH DAMAGE. 26.\" 27.Dd November 8, 2020 28.Dt QUERYLOCALE 3 29.Os 30.Sh NAME 31.Nm querylocale 32.Nd Look up the locale name or version for a specified category 33.Sh LIBRARY 34.Lb libc 35.Sh SYNOPSIS 36.In locale.h 37.Ft const char * 38.Fn querylocale "int mask" "locale_t locale" 39.Sh DESCRIPTION 40Returns the name or version of the locale for the category specified by 41.Fa mask . 42The possible values for the mask are the same as those in 43.Xr newlocale 3 , 44when requesting the locale name. 45Specify the bitwise OR of 46.Fa LC_VERSION_MASK 47and another mask value to request a version string. 48Version strings can be compared to detect changes to the locale's definition. 49The structure of the version string is unspecified. 50Currently, version information is only available for 51.Fa LC_COLLATE_MASK , 52and an empty string is returned for other categories. 53If more than one bit in the mask is set, not counting 54.Fa LC_VERSION_MASK , 55the returned value is undefined. 56.Sh SEE ALSO 57.Xr duplocale 3 , 58.Xr freelocale 3 , 59.Xr localeconv 3 , 60.Xr newlocale 3 , 61.Xr uselocale 3 , 62.Xr xlocale 3 63.Sh HISTORY 64The 65.Fn querylocale 66function first appeared in 67.Fx 9.1 , 68and is based on the function of the same name in Darwin. 69.Fa LC_VERSION_MASK 70first appeared in 71.Fx 13.0 . 72