diff options
Diffstat (limited to 'newlib/libc/string/strcpy.c')
-rw-r--r-- | newlib/libc/string/strcpy.c | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/newlib/libc/string/strcpy.c b/newlib/libc/string/strcpy.c deleted file mode 100644 index 905b254..0000000 --- a/newlib/libc/string/strcpy.c +++ /dev/null @@ -1,99 +0,0 @@ -/* -FUNCTION - <<strcpy>>---copy string - -INDEX - strcpy - -ANSI_SYNOPSIS - #include <string.h> - char *strcpy(char *<[dst]>, const char *<[src]>); - -TRAD_SYNOPSIS - #include <string.h> - char *strcpy(<[dst]>, <[src]>) - char *<[dst]>; - char *<[src]>; - -DESCRIPTION - <<strcpy>> copies the string pointed to by <[src]> - (including the terminating null character) to the array - pointed to by <[dst]>. - -RETURNS - This function returns the initial value of <[dst]>. - -PORTABILITY -<<strcpy>> is ANSI C. - -<<strcpy>> requires no supporting OS subroutines. - -QUICKREF - strcpy ansi pure -*/ - -#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 - -char* -_DEFUN (strcpy, (dst0, src0), - char *dst0 _AND - _CONST char *src0) -{ -#if defined(PREFER_SIZE_OVER_SPEED) || defined(__OPTIMIZE_SIZE__) - char *s = dst0; - - while (*dst0++ = *src0++) - ; - - return s; -#else - char *dst = dst0; - _CONST char *src = src0; - long *aligned_dst; - _CONST long *aligned_src; - - /* If SRC or DEST is unaligned, then copy bytes. */ - if (!UNALIGNED (src, dst)) - { - aligned_dst = (long*)dst; - aligned_src = (long*)src; - - /* SRC and DEST are both "long int" aligned, try to do "long int" - sized copies. */ - while (!DETECTNULL(*aligned_src)) - { - *aligned_dst++ = *aligned_src++; - } - - dst = (char*)aligned_dst; - src = (char*)aligned_src; - } - - while (*dst++ = *src++) - ; - return dst0; -#endif /* not PREFER_SIZE_OVER_SPEED */ -} |