diff options
| -rw-r--r-- | newlib/libc/string/strings.tex | 4 | ||||
| -rw-r--r-- | newlib/libc/string/strnstr.c | 39 |
2 files changed, 43 insertions, 0 deletions
diff --git a/newlib/libc/string/strings.tex b/newlib/libc/string/strings.tex index c619886b5..6aec5fe0e 100644 --- a/newlib/libc/string/strings.tex +++ b/newlib/libc/string/strings.tex @@ -40,6 +40,7 @@ managing areas of memory. The corresponding declarations are in * strncat:: Concatenate strings * strncmp:: Character string compare * strncpy:: Counted copy string +* strnstr:: Find string segment * strnlen:: Character string length * strpbrk:: Find chars in string * strrchr:: Reverse search for character in string @@ -159,6 +160,9 @@ managing areas of memory. The corresponding declarations are in @include string/strncpy.def @page +@include string/strnstr.def + +@page @include string/strnlen.def @page diff --git a/newlib/libc/string/strnstr.c b/newlib/libc/string/strnstr.c index 05d86ee20..fcceebc1f 100644 --- a/newlib/libc/string/strnstr.c +++ b/newlib/libc/string/strnstr.c @@ -1,3 +1,42 @@ +/* +FUNCTION + <<strnstr>>---find string segment + +INDEX + strnstr + +ANSI_SYNOPSIS + #include <string.h> + size_t strnstr(const char *<[s1]>, const char *<[s2]>, size_t <[n]>); + +TRAD_SYNOPSIS + #include <string.h> + size_t strnstr(<[s1]>, <[s2]>, <[n]>) + char *<[s1]>; + char *<[s2]>; + size_t <[n]>; + +DESCRIPTION + Locates the first occurrence in the string pointed to by <[s1]> of + the sequence of limited to the <[n]> characters in the string + pointed to by <[s2]> + +RETURNS + Returns a pointer to the located string segment, or a null + pointer if the string <[s2]> is not found. If <[s2]> points to + a string with zero length, <[s1]> is returned. + + +PORTABILITY +<<strnstr>> is ANSI C. + +<<strnstr>> requires no supporting OS subroutines. + +QUICKREF + strnstr ansi pure + +*/ + #undef __STRICT_ANSI__ #include <_ansi.h> #include <string.h> |