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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [string/] [strnlen.c] - Rev 273
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/* FUNCTION <<strnlen>>---character string length INDEX strnlen ANSI_SYNOPSIS #include <string.h> size_t strnlen(const char *<[str]>, size_t <[n]>); TRAD_SYNOPSIS #include <string.h> size_t strnlen(<[str]>, <[n]>) char *<[src]>; size_t <[n]>; DESCRIPTION The <<strnlen>> function works out the length of the string starting at <<*<[str]>>> by counting chararacters until it reaches a NUL character or the maximum: <[n]> number of characters have been inspected. RETURNS <<strnlen>> returns the character count or <[n]>. PORTABILITY <<strnlen>> is a GNU extension. <<strnlen>> requires no supporting OS subroutines. */ #undef __STRICT_ANSI__ #include <_ansi.h> #include <string.h> size_t _DEFUN (strnlen, (str, n), _CONST char *str _AND size_t n) { _CONST char *start = str; while (n-- > 0 && *str) str++; return str - start; }
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