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207 lines
8.5 KiB
HTML
207 lines
8.5 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Locale (The Red Hat newlib C Library)</title>
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<meta name="description" content="Locale (The Red Hat newlib C Library)">
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<meta name="keywords" content="Locale (The Red Hat newlib C Library)">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Document-Index.html#Document-Index" rel="index" title="Document Index">
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<link href="Document-Index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="index.html#Top" rel="up" title="Top">
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<link href="setlocale.html#setlocale" rel="next" title="setlocale">
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<link href="tzset.html#tzset" rel="prev" title="tzset">
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-->
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</style>
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</head>
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<body lang="en">
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<a name="Locale"></a>
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<div class="header">
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<p>
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Next: <a href="Reentrancy.html#Reentrancy" accesskey="n" rel="next">Reentrancy</a>, Previous: <a href="Timefns.html#Timefns" accesskey="p" rel="prev">Timefns</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</a> [<a href="Document-Index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Document-Index.html#Document-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="Locale-_0028locale_002eh_0029"></a>
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<h2 class="chapter">9 Locale (<samp>locale.h</samp>)</h2>
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<p>A <em>locale</em> is the name for a collection of parameters (affecting
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collating sequences and formatting conventions) that may be different
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depending on location or culture. The <code>"C"</code> locale is the only
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one defined in the ANSI C standard.
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</p>
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<p>This is a minimal implementation, supporting only the required <code>"C"</code>
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value for locale; strings representing other locales are not
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honored. (<code>""</code> is also accepted; it represents the default locale
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for an implementation, here equivalent to <code>"C"</code>).
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</p>
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<p><samp>locale.h</samp> defines the structure <code>lconv</code> to collect the
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information on a locale, with the following fields:
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</p>
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<dl compact="compact">
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<dt><code>char *decimal_point</code></dt>
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<dd><p>The decimal point character used to format “ordinary” numbers (all
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numbers except those referring to amounts of money). <code>"."</code> in the
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C locale.
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</p>
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</dd>
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<dt><code>char *thousands_sep</code></dt>
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<dd><p>The character (if any) used to separate groups of digits, when
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formatting ordinary numbers.
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<code>""</code> in the C locale.
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</p>
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</dd>
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<dt><code>char *grouping</code></dt>
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<dd><p>Specifications for how many digits to group (if any grouping is done at
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all) when formatting ordinary numbers. The <em>numeric value</em> of each
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character in the string represents the number of digits for the next
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group, and a value of <code>0</code> (that is, the string’s trailing
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<code>NULL</code>) means to continue grouping digits using the last value
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specified. Use <code>CHAR_MAX</code> to indicate that no further grouping is
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desired. <code>""</code> in the C locale.
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</p>
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</dd>
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<dt><code>char *int_curr_symbol</code></dt>
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<dd><p>The international currency symbol (first three characters), if any, and
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the character used to separate it from numbers.
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<code>""</code> in the C locale.
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</p>
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</dd>
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<dt><code>char *currency_symbol</code></dt>
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<dd><p>The local currency symbol, if any.
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<code>""</code> in the C locale.
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</p>
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</dd>
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<dt><code>char *mon_decimal_point</code></dt>
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<dd><p>The symbol used to delimit fractions in amounts of money.
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<code>""</code> in the C locale.
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</p>
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</dd>
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<dt><code>char *mon_thousands_sep</code></dt>
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<dd><p>Similar to <code>thousands_sep</code>, but used for amounts of money.
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<code>""</code> in the C locale.
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</p>
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</dd>
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<dt><code>char *mon_grouping</code></dt>
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<dd><p>Similar to <code>grouping</code>, but used for amounts of money.
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<code>""</code> in the C locale.
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</p>
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</dd>
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<dt><code>char *positive_sign</code></dt>
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<dd><p>A string to flag positive amounts of money when formatting.
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<code>""</code> in the C locale.
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</p>
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</dd>
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<dt><code>char *negative_sign</code></dt>
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<dd><p>A string to flag negative amounts of money when formatting.
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<code>""</code> in the C locale.
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</p>
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</dd>
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<dt><code>char int_frac_digits</code></dt>
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<dd><p>The number of digits to display when formatting amounts of money to
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international conventions.
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<code>CHAR_MAX</code> (the largest number representable as a <code>char</code>) in
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the C locale.
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</p>
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</dd>
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<dt><code>char frac_digits</code></dt>
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<dd><p>The number of digits to display when formatting amounts of money to
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local conventions.
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<code>CHAR_MAX</code> in the C locale.
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</p>
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</dd>
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<dt><code>char p_cs_precedes</code></dt>
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<dd><p><code>1</code> indicates the local currency symbol is used before a
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<em>positive or zero</em> formatted amount of money; <code>0</code> indicates
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the currency symbol is placed after the formatted number.
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<code>CHAR_MAX</code> in the C locale.
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</p>
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</dd>
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<dt><code>char p_sep_by_space</code></dt>
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<dd><p><code>1</code> indicates the local currency symbol must be separated from
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<em>positive or zero</em> numbers by a space; <code>0</code> indicates that it
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is immediately adjacent to numbers.
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<code>CHAR_MAX</code> in the C locale.
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</p>
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</dd>
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<dt><code>char n_cs_precedes</code></dt>
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<dd><p><code>1</code> indicates the local currency symbol is used before a
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<em>negative</em> formatted amount of money; <code>0</code> indicates
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the currency symbol is placed after the formatted number.
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<code>CHAR_MAX</code> in the C locale.
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</p>
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</dd>
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<dt><code>char n_sep_by_space</code></dt>
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<dd><p><code>1</code> indicates the local currency symbol must be separated from
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<em>negative</em> numbers by a space; <code>0</code> indicates that it
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is immediately adjacent to numbers.
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<code>CHAR_MAX</code> in the C locale.
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</p>
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</dd>
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<dt><code>char p_sign_posn</code></dt>
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<dd><p>Controls the position of the <em>positive</em> sign for
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numbers representing money. <code>0</code> means parentheses surround the
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number; <code>1</code> means the sign is placed before both the number and the
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currency symbol; <code>2</code> means the sign is placed after both the number
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and the currency symbol; <code>3</code> means the sign is placed just before
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the currency symbol; and <code>4</code> means the sign is placed just after
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the currency symbol.
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<code>CHAR_MAX</code> in the C locale.
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</p>
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</dd>
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<dt><code>char n_sign_posn</code></dt>
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<dd><p>Controls the position of the <em>negative</em> sign for numbers
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representing money, using the same rules as <code>p_sign_posn</code>.
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<code>CHAR_MAX</code> in the C locale.
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</p></dd>
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</dl>
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<table class="menu" border="0" cellspacing="0">
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<tr><td align="left" valign="top">• <a href="setlocale.html#setlocale" accesskey="1">setlocale</a>:</td><td> </td><td align="left" valign="top">Select or query locale
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</td></tr>
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</table>
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<hr>
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<div class="header">
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<p>
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Next: <a href="Reentrancy.html#Reentrancy" accesskey="n" rel="next">Reentrancy</a>, Previous: <a href="Timefns.html#Timefns" accesskey="p" rel="prev">Timefns</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</a> [<a href="Document-Index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Document-Index.html#Document-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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</body>
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</html>
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