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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2019-02-05 17:34:05 -0200 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2019-02-27 10:00:34 -0300 |
| commit | 7b3fb620519f6887b2650cc8e0e3267e44914c7b (patch) | |
| tree | 6f79b02b90f468269045d821d23dd1f92e23bc66 /wcsmbs | |
| parent | aa0e46636a5b71b609a41e9ab97134cd76ac1522 (diff) | |
| download | glibc-7b3fb620519f6887b2650cc8e0e3267e44914c7b.zip glibc-7b3fb620519f6887b2650cc8e0e3267e44914c7b.tar.gz glibc-7b3fb620519f6887b2650cc8e0e3267e44914c7b.tar.bz2 | |
wcsmbs: optimize wcpcpy
This patch rewrites wcpcpy using wcslen and wmemcpy. This is
similar to the optimizatio done on stpcpy by f559d8cf29.
Checked on x86_64-linux-gnu and string tests on a simulated
m68k-linux-gnu.
* sysdeps/m68k/wcpcpy.c: Remove file.
* wcsmbs/wcpcpy.c (__wcpcpy): Rewrite using wcslen and wmemcpy.
Diffstat (limited to 'wcsmbs')
| -rw-r--r-- | wcsmbs/wcpcpy.c | 19 |
1 files changed, 3 insertions, 16 deletions
diff --git a/wcsmbs/wcpcpy.c b/wcsmbs/wcpcpy.c index 01978e9..666fe15 100644 --- a/wcsmbs/wcpcpy.c +++ b/wcsmbs/wcpcpy.c @@ -18,31 +18,18 @@ #include <wchar.h> -#define __need_ptrdiff_t -#include <stddef.h> - #ifdef WCPCPY # define __wcpcpy WCPCPY #endif + /* Copy SRC to DEST, returning the address of the terminating L'\0' in DEST. */ wchar_t * __wcpcpy (wchar_t *dest, const wchar_t *src) { - wchar_t *wcp = (wchar_t *) dest - 1; - wint_t c; - const ptrdiff_t off = src - dest + 1; - - do - { - c = wcp[off]; - *++wcp = c; - } - while (c != L'\0'); - - return wcp; + size_t len = __wcslen (src); + return __wmemcpy (dest, src, len + 1) + len; } - #ifndef WCPCPY weak_alias (__wcpcpy, wcpcpy) #endif |