PROLOG<\/a> This manual page is part of the POSIX Programmer\u2019s Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.<\/p>\n strcoll, strcoll_l \u2014 string comparison using collating information<\/p>\n #include int strcoll(const char *s1<\/i>, const char *s2<\/i>); For strcoll<\/i>(): The functionality described on this reference page is aligned with the ISO\u00a0C standard. Any conflict between the requirements described here and the ISO\u00a0C standard is unintentional. This volume of POSIX.1-2017 defers to the ISO\u00a0C standard.<\/p>\n The strcoll<\/i>() and strcoll_l<\/i>() functions shall compare the string pointed to by s1<\/i> to the string pointed to by s2<\/i>, both interpreted as appropriate to the LC_COLLATE<\/i> category of the current locale, or of the locale represented by locale<\/i>, respectively.<\/p>\n The strcoll<\/i>() and strcoll_l<\/i>() functions shall not change the setting of errno<\/i> if successful.<\/p>\n Since no return value is reserved to indicate an error, an application wishing to check for error situations should set errno<\/i> to 0, then call strcoll<\/i>(), or strcoll_l<\/i>() then check errno<\/i>.<\/p>\n The behavior is undefined if the locale<\/i> argument to strcoll_l<\/i>() is the special locale object LC_GLOBAL_LOCALE or is not a valid locale object handle.<\/p>\n Upon successful completion, strcoll<\/i>() shall return an integer greater than, equal to, or less than 0, according to whether the string pointed to by s1<\/i> is greater than, equal to, or less than the string pointed to by s2<\/i> when both are interpreted as appropriate to the current locale. On error, strcoll<\/i>() may set errno<\/i>, but no return value is reserved to indicate an error.<\/p>\n Upon successful completion, strcoll_l<\/i>() shall return an integer greater than, equal to, or less than 0, according to whether the string pointed to by s1<\/i> is greater than, equal to, or less than the string pointed to by s2<\/i> when both are interpreted as appropriate to the locale represented by locale<\/i>. On error, strcoll_l<\/i>() may set errno<\/i>, but no return value is reserved to indicate an error.<\/p>\n These functions may fail if:<\/p>\n
NAME<\/a>
SYNOPSIS<\/a>
DESCRIPTION<\/a>
RETURN VALUE<\/a>
ERRORS<\/a>
EXAMPLES<\/a>
APPLICATION USAGE<\/a>
RATIONALE<\/a>
FUTURE DIRECTIONS<\/a>
SEE ALSO<\/a>
COPYRIGHT<\/a> <\/p>\n
\nPROLOG <\/a> <\/h2>\n
NAME <\/a> <\/h2>\n
SYNOPSIS <\/a> <\/h2>\n
int strcoll_l(const char *s1<\/i>, const char *s2<\/i>,
locale_t locale<\/i>);<\/p>\nDESCRIPTION <\/a> <\/h2>\n
RETURN VALUE <\/a> <\/h2>\n
ERRORS <\/a> <\/h2>\n