239 lines
6.7 KiB
Groff
239 lines
6.7 KiB
Groff
.\" Copyright (c) 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" This code is derived from software contributed to Berkeley by
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.\" Donn Seeley at BSDI.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" From @(#)setlocale.3 8.1 (Berkeley) 6/9/93
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.\" From FreeBSD: src/lib/libc/locale/setlocale.3,v 1.28 2003/11/15 02:26:04 tjr Exp
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.\" $FreeBSD$
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.\"
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.Dd November 21, 2003
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.Dt LOCALECONV 3
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.Os
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.Sh NAME
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.Nm localeconv
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.Nd natural language formatting for C
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.In locale.h
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.Ft struct lconv *
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.Fn localeconv "void"
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.In xlocale.h
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.Ft struct lconv *
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.Fn localeconv_l "locale_t locale"
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.Sh DESCRIPTION
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The
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.Fn localeconv
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function returns a pointer to a structure
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which provides parameters for formatting numbers,
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especially currency values:
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.Bd -literal -offset indent
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struct lconv {
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char *decimal_point;
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char *thousands_sep;
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char *grouping;
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char *int_curr_symbol;
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char *currency_symbol;
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char *mon_decimal_point;
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char *mon_thousands_sep;
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char *mon_grouping;
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char *positive_sign;
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char *negative_sign;
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char int_frac_digits;
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char frac_digits;
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char p_cs_precedes;
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char p_sep_by_space;
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char n_cs_precedes;
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char n_sep_by_space;
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char p_sign_posn;
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char n_sign_posn;
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char int_p_cs_precedes;
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char int_n_cs_precedes;
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char int_p_sep_by_space;
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char int_n_sep_by_space;
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char int_p_sign_posn;
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char int_n_sign_posn;
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};
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.Ed
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.Pp
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The individual fields have the following meanings:
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.Bl -tag -width mon_decimal_point
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.It Va decimal_point
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The decimal point character, except for currency values,
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cannot be an empty string.
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.It Va thousands_sep
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The separator between groups of digits
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before the decimal point, except for currency values.
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.It Va grouping
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The sizes of the groups of digits, except for currency values.
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This is a pointer to a vector of integers, each of size
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.Vt char ,
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representing group size from low order digit groups
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to high order (right to left).
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The list may be terminated with 0 or
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.Dv CHAR_MAX .
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If the list is terminated with 0,
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the last group size before the 0 is repeated to account for all the digits.
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If the list is terminated with
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.Dv CHAR_MAX ,
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no more grouping is performed.
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.It Va int_curr_symbol
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The standardized international currency symbol.
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.It Va currency_symbol
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The local currency symbol.
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.It Va mon_decimal_point
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The decimal point character for currency values.
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.It Va mon_thousands_sep
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The separator for digit groups in currency values.
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.It Va mon_grouping
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Like
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.Va grouping
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but for currency values.
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.It Va positive_sign
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The character used to denote nonnegative currency values,
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usually the empty string.
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.It Va negative_sign
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The character used to denote negative currency values,
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usually a minus sign.
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.It Va int_frac_digits
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The number of digits after the decimal point
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in an international-style currency value.
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.It Va frac_digits
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The number of digits after the decimal point
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in the local style for currency values.
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.It Va p_cs_precedes
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1 if the currency symbol precedes the currency value
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for nonnegative values, 0 if it follows.
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.It Va p_sep_by_space
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1 if a space is inserted between the currency symbol
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and the currency value for nonnegative values, 0 otherwise.
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.It Va n_cs_precedes
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Like
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.Va p_cs_precedes
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but for negative values.
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.It Va n_sep_by_space
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Like
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.Va p_sep_by_space
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but for negative values.
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.It Va p_sign_posn
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The location of the
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.Va positive_sign
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with respect to a nonnegative quantity and the
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.Va currency_symbol ,
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coded as follows:
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.Pp
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.Bl -tag -width 3n -compact
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.It Li 0
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Parentheses around the entire string.
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.It Li 1
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Before the string.
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.It Li 2
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After the string.
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.It Li 3
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Just before
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.Va currency_symbol .
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.It Li 4
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Just after
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.Va currency_symbol .
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.El
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.It Va n_sign_posn
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Like
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.Va p_sign_posn
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but for negative currency values.
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.It Va int_p_cs_precedes
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Same as
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.Va p_cs_precedes ,
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but for internationally formatted monetary quantities.
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.It Va int_n_cs_precedes
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Same as
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.Va n_cs_precedes ,
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but for internationally formatted monetary quantities.
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.It Va int_p_sep_by_space
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Same as
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.Va p_sep_by_space ,
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but for internationally formatted monetary quantities.
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.It Va int_n_sep_by_space
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Same as
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.Va n_sep_by_space ,
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but for internationally formatted monetary quantities.
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.It Va int_p_sign_posn
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Same as
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.Va p_sign_posn ,
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but for internationally formatted monetary quantities.
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.It Va int_n_sign_posn
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Same as
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.Va n_sign_posn ,
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but for internationally formatted monetary quantities.
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.El
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.Pp
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Unless mentioned above,
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an empty string as a value for a field
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indicates a zero length result or
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a value that is not in the current locale.
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A
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.Dv CHAR_MAX
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result similarly denotes an unavailable value.
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.Pp
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The
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.Fn localeconv_l
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function takes an explicit locale parameter.
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For more information, see
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.Xr xlocale 3 .
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.Sh RETURN VALUES
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The
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.Fn localeconv
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function returns a pointer to a static object
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which may be altered by later calls to
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.Xr setlocale 3
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or
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.Fn localeconv .
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The return value for
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.Fn localeconv_l
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is stored with the locale.
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It will remain valid until a subsequent call to
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.Xr freelocale 3 .
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If a thread-local locale is in effect then the return value from
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.Fn localeconv
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will remain valid until the locale is destroyed.
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.Sh ERRORS
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No errors are defined.
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.Sh SEE ALSO
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.Xr setlocale 3 ,
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.Xr strfmon 3
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.Sh STANDARDS
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The
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.Fn localeconv
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function conforms to
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.St -isoC-99 .
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.Sh HISTORY
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The
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.Fn localeconv
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function first appeared in
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.Bx 4.4 .
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