STRXFRM(3) BSD Library Functions Manual STRXFRM(3)NAME
strxfrm, strxfrm_l — transform a string under locale
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <string.h>
size_t
strxfrm(char *restrict s1, const char *restrict s2, size_t n);
#include <string.h>
#include <xlocale.h>
size_t
strxfrm_l(char *restrict s1, const char *restrict s2, size_t n,
locale_t loc);
DESCRIPTION
The strxfrm() function transforms a null-terminated string pointed to by
s2 according to the current locale collation if any, then copies the
transformed string into s1. Not more than n characters are copied into
s1, including the terminating null character added. If n is set to 0 (it
helps to determine an actual size needed for transformation), s1 is per‐
mitted to be a NULL pointer.
Comparing two strings using strcmp() after strxfrm() is equal to compar‐
ing two original strings with strcoll().
Although the strxfrm() function uses the current locale, the strxfrm_l()
function may be passed a locale directly. See xlocale(3) for more infor‐
mation.
RETURN VALUES
Upon successful completion, strxfrm() returns the length of the trans‐
formed string not including the terminating null character. If this
value is n or more, the contents of s1 are indeterminate.
SEE ALSOsetlocale(3), strcmp(3), strcoll(3), wcsxfrm(3), xlocale(3)STANDARDS
The strxfrm() function conforms to ISO/IEC 9899:1990 (“ISO C90”).
BSD June 4, 1993 BSD
