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Diffstat (limited to 'newlib/libc/string/strlen.c')
-rw-r--r--newlib/libc/string/strlen.c88
1 files changed, 0 insertions, 88 deletions
diff --git a/newlib/libc/string/strlen.c b/newlib/libc/string/strlen.c
deleted file mode 100644
index 4249e14c7..000000000
--- a/newlib/libc/string/strlen.c
+++ /dev/null
@@ -1,88 +0,0 @@
-/*
-FUNCTION
- <<strlen>>---character string length
-
-INDEX
- strlen
-
-ANSI_SYNOPSIS
- #include <string.h>
- size_t strlen(const char *<[str]>);
-
-TRAD_SYNOPSIS
- #include <string.h>
- size_t strlen(<[str]>)
- char *<[src]>;
-
-DESCRIPTION
- The <<strlen>> function works out the length of the string
- starting at <<*<[str]>>> by counting chararacters until it
- reaches a <<NULL>> character.
-
-RETURNS
- <<strlen>> returns the character count.
-
-PORTABILITY
-<<strlen>> is ANSI C.
-
-<<strlen>> requires no supporting OS subroutines.
-
-QUICKREF
- strlen ansi pure
-*/
-
-#include <_ansi.h>
-#include <string.h>
-#include <limits.h>
-
-#define LBLOCKSIZE (sizeof (long))
-#define UNALIGNED(X) ((long)X & (LBLOCKSIZE - 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
-
-size_t
-_DEFUN (strlen, (str),
- _CONST char *str)
-{
-#if defined(PREFER_SIZE_OVER_SPEED) || defined(__OPTIMIZE_SIZE__)
- _CONST char *start = str;
-
- while (*str)
- str++;
-
- return str - start;
-#else
- _CONST char *start = str;
- unsigned long *aligned_addr;
-
- if (!UNALIGNED (str))
- {
- /* If the string is word-aligned, we can check for the presence of
- a null in each word-sized block. */
- aligned_addr = (unsigned long*)str;
- while (!DETECTNULL (*aligned_addr))
- aligned_addr++;
-
- /* Once a null is detected, we check each byte in that block for a
- precise position of the null. */
- str = (char*)aligned_addr;
- }
-
- while (*str)
- str++;
- return str - start;
-#endif /* not PREFER_SIZE_OVER_SPEED */
-}