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Diffstat (limited to 'newlib/libc/string/stpncpy.c')
-rw-r--r--newlib/libc/string/stpncpy.c114
1 files changed, 0 insertions, 114 deletions
diff --git a/newlib/libc/string/stpncpy.c b/newlib/libc/string/stpncpy.c
deleted file mode 100644
index fca10d398..000000000
--- a/newlib/libc/string/stpncpy.c
+++ /dev/null
@@ -1,114 +0,0 @@
-/*
-FUNCTION
- <<stpncpy>>---counted copy string returning a pointer to its end
-
-INDEX
- stpncpy
-
-ANSI_SYNOPSIS
- #include <string.h>
- char *stpncpy(char *<[dst]>, const char *<[src]>, size_t <[length]>);
-
-TRAD_SYNOPSIS
- #include <string.h>
- char *stpncpy(<[dst]>, <[src]>, <[length]>)
- char *<[dst]>;
- char *<[src]>;
- size_t <[length]>;
-
-DESCRIPTION
- <<stpncpy>> copies not more than <[length]> characters from the
- the string pointed to by <[src]> (including the terminating
- null character) to the array pointed to by <[dst]>. If the
- string pointed to by <[src]> is shorter than <[length]>
- characters, null characters are appended to the destination
- array until a total of <[length]> characters have been
- written.
-
-RETURNS
- This function returns a pointer to the end of the destination string,
- thus pointing to the trailing '\0', or, if the destination string is
- not null-terminated, pointing to dst + n.
-
-PORTABILITY
-<<stpncpy>> is a GNU extension, candidate for inclusion into POSIX/SUSv4.
-
-<<stpncpy>> requires no supporting OS subroutines.
-
-QUICKREF
- stpncpy gnu
-*/
-
-#include <string.h>
-#include <limits.h>
-
-/*SUPPRESS 560*/
-/*SUPPRESS 530*/
-
-/* Nonzero if either X or Y is not aligned on a "long" boundary. */
-#define UNALIGNED(X, Y) \
- (((long)X & (sizeof (long) - 1)) | ((long)Y & (sizeof (long) - 1)))
-
-#if LONG_MAX == 2147483647L
-#define DETECTNULL(X) (((X) - 0x01010101) & ~(X) & 0x80808080)
-#else
-#if LONG_MAX == 9223372036854775807L
-/* Nonzero if X (a long int) contains a NULL byte. */
-#define DETECTNULL(X) (((X) - 0x0101010101010101) & ~(X) & 0x8080808080808080)
-#else
-#error long int is not a 32bit or 64bit type.
-#endif
-#endif
-
-#ifndef DETECTNULL
-#error long int is not a 32bit or 64bit byte
-#endif
-
-#define TOO_SMALL(LEN) ((LEN) < sizeof (long))
-
-char *
-_DEFUN (stpncpy, (dst, src),
- char *dst _AND
- _CONST char *src _AND
- size_t count)
-{
- char *ret = NULL;
-
-#if !defined(PREFER_SIZE_OVER_SPEED) && !defined(__OPTIMIZE_SIZE__)
- long *aligned_dst;
- _CONST long *aligned_src;
-
- /* If SRC and DEST is aligned and count large enough, then copy words. */
- if (!UNALIGNED (src, dst) && !TOO_SMALL (count))
- {
- aligned_dst = (long*)dst;
- aligned_src = (long*)src;
-
- /* SRC and DEST are both "long int" aligned, try to do "long int"
- sized copies. */
- while (count >= sizeof (long int) && !DETECTNULL(*aligned_src))
- {
- count -= sizeof (long int);
- *aligned_dst++ = *aligned_src++;
- }
-
- dst = (char*)aligned_dst;
- src = (char*)aligned_src;
- }
-#endif /* not PREFER_SIZE_OVER_SPEED */
-
- while (count > 0)
- {
- --count;
- if ((*dst++ = *src++) == '\0')
- {
- ret = dst - 1;
- break;
- }
- }
-
- while (count-- > 0)
- *dst++ = '\0';
-
- return ret ? ret : dst;
-}