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Diffstat (limited to 'newlib/libc/string/strncat.c')
-rw-r--r--newlib/libc/string/strncat.c114
1 files changed, 0 insertions, 114 deletions
diff --git a/newlib/libc/string/strncat.c b/newlib/libc/string/strncat.c
deleted file mode 100644
index 0f29247a8..000000000
--- a/newlib/libc/string/strncat.c
+++ /dev/null
@@ -1,114 +0,0 @@
-/*
-FUNCTION
- <<strncat>>---concatenate strings
-
-INDEX
- strncat
-
-ANSI_SYNOPSIS
- #include <string.h>
- char *strncat(char *<[dst]>, const char *<[src]>, size_t <[length]>);
-
-TRAD_SYNOPSIS
- #include <string.h>
- char *strncat(<[dst]>, <[src]>, <[length]>)
- char *<[dst]>;
- char *<[src]>;
- size_t <[length]>;
-
-DESCRIPTION
- <<strncat>> appends not more than <[length]> characters from
- the string pointed to by <[src]> (including the terminating
- null character) to the end of the string pointed to by
- <[dst]>. The initial character of <[src]> overwrites the null
- character at the end of <[dst]>. A terminating null character
- is always appended to the result
-
-WARNINGS
- Note that a null is always appended, so that if the copy is
- limited by the <[length]> argument, the number of characters
- appended to <[dst]> is <<n + 1>>.
-
-RETURNS
- This function returns the initial value of <[dst]>
-
-PORTABILITY
-<<strncat>> is ANSI C.
-
-<<strncat>> requires no supporting OS subroutines.
-
-QUICKREF
- strncat ansi pure
-*/
-
-#include <string.h>
-#include <limits.h>
-
-/* Nonzero if X is aligned on a "long" boundary. */
-#define ALIGNED(X) \
- (((long)X & (sizeof (long) - 1)) == 0)
-
-#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
-
-char *
-_DEFUN (strncat, (s1, s2, n),
- char *s1 _AND
- _CONST char *s2 _AND
- size_t n)
-{
-#if defined(PREFER_SIZE_OVER_SPEED) || defined(__OPTIMIZE_SIZE__)
- char *s = s1;
-
- while (*s1)
- s1++;
- while (n-- != 0 && (*s1++ = *s2++))
- {
- if (n == 0)
- *s1 = '\0';
- }
-
- return s;
-#else
- char *s = s1;
-
- /* Skip over the data in s1 as quickly as possible. */
- if (ALIGNED (s1))
- {
- unsigned long *aligned_s1 = (unsigned long *)s1;
- while (!DETECTNULL (*aligned_s1))
- aligned_s1++;
-
- s1 = (char *)aligned_s1;
- }
-
- while (*s1)
- s1++;
-
- /* s1 now points to the its trailing null character, now copy
- up to N bytes from S2 into S1 stopping if a NULL is encountered
- in S2.
-
- It is not safe to use strncpy here since it copies EXACTLY N
- characters, NULL padding if necessary. */
- while (n-- != 0 && (*s1++ = *s2++))
- {
- if (n == 0)
- *s1 = '\0';
- }
-
- return s;
-#endif /* not PREFER_SIZE_OVER_SPEED */
-}