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124 lines
4.3 KiB
TeX
124 lines
4.3 KiB
TeX
@node Locale
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@chapter Locale (@file{locale.h})
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A @dfn{locale} 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"} locale is the only
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one defined in the ANSI C standard.
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This is a minimal implementation, supporting only the required @code{"C"}
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value for locale; strings representing other locales are not
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honored. (@code{""} is also accepted; it represents the default locale
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for an implementation, here equivalent to @code{"C"}.
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@file{locale.h} defines the structure @code{lconv} to collect the
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information on a locale, with the following fields:
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@table @code
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@item char *decimal_point
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The decimal point character used to format ``ordinary'' numbers (all
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numbers except those referring to amounts of money). @code{"."} in the
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C locale.
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@item char *thousands_sep
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The character (if any) used to separate groups of digits, when
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formatting ordinary numbers.
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@code{""} in the C locale.
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@item char *grouping
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Specifications for how many digits to group (if any grouping is done at
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all) when formatting ordinary numbers. The @emph{numeric value} 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} (that is, the string's trailing
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@code{NULL}) means to continue grouping digits using the last value
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specified. Use @code{CHAR_MAX} to indicate that no further grouping is
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desired. @code{""} in the C locale.
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@item char *int_curr_symbol
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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{""} in the C locale.
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@item char *currency_symbol
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The local currency symbol, if any.
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@code{""} in the C locale.
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@item char *mon_decimal_point
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The symbol used to delimit fractions in amounts of money.
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@code{""} in the C locale.
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@item char *mon_thousands_sep
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Similar to @code{thousands_sep}, but used for amounts of money.
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@code{""} in the C locale.
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@item char *mon_grouping
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Similar to @code{grouping}, but used for amounts of money.
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@code{""} in the C locale.
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@item char *positive_sign
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A string to flag positive amounts of money when formatting.
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@code{""} in the C locale.
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@item char *negative_sign
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A string to flag negative amounts of money when formatting.
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@code{""} in the C locale.
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@item char int_frac_digits
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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} (the largest number representable as a @code{char}) in
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the C locale.
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@item char frac_digits
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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} in the C locale.
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@item char p_cs_precedes
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@code{1} indicates the local currency symbol is used before a
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@emph{positive or zero} formatted amount of money; @code{0} indicates
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the currency symbol is placed after the formatted number.
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@code{CHAR_MAX} in the C locale.
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@item char p_sep_by_space
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@code{1} indicates the local currency symbol must be separated from
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@emph{positive or zero} numbers by a space; @code{0} indicates that it
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is immediately adjacent to numbers.
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@code{CHAR_MAX} in the C locale.
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@item char n_cs_precedes
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@code{1} indicates the local currency symbol is used before a
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@emph{negative} formatted amount of money; @code{0} indicates
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the currency symbol is placed after the formatted number.
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@code{CHAR_MAX} in the C locale.
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@item char n_sep_by_space
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@code{1} indicates the local currency symbol must be separated from
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@emph{negative} numbers by a space; @code{0} indicates that it
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is immediately adjacent to numbers.
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@code{CHAR_MAX} in the C locale.
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@item char p_sign_posn
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Controls the position of the @emph{positive} sign for
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numbers representing money. @code{0} means parentheses surround the
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number; @code{1} means the sign is placed before both the number and the
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currency symbol; @code{2} means the sign is placed after both the number
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and the currency symbol; @code{3} means the sign is placed just before
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the currency symbol; and @code{4} means the sign is placed just after
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the currency symbol.
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@code{CHAR_MAX} in the C locale.
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@item char n_sign_posn
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Controls the position of the @emph{negative} sign for numbers
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representing money, using the same rules as @code{p_sign_posn}.
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@code{CHAR_MAX} in the C locale.
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@end table
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@menu
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* setlocale:: Select or query locale
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@end menu
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@page
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@include locale/locale.def
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