Index: fusl/src/string/stpncpy.c |
diff --git a/fusl/src/string/stpncpy.c b/fusl/src/string/stpncpy.c |
index 1f57a4ddbd0a818168e56c0b15178e93304c42cf..1860fb9ca4941ed390ca93b8d0d10f77c73848ec 100644 |
--- a/fusl/src/string/stpncpy.c |
+++ b/fusl/src/string/stpncpy.c |
@@ -3,29 +3,33 @@ |
#include <limits.h> |
#include "libc.h" |
-#define ALIGN (sizeof(size_t)-1) |
-#define ONES ((size_t)-1/UCHAR_MAX) |
-#define HIGHS (ONES * (UCHAR_MAX/2+1)) |
-#define HASZERO(x) ((x)-ONES & ~(x) & HIGHS) |
+#define ALIGN (sizeof(size_t) - 1) |
+#define ONES ((size_t)-1 / UCHAR_MAX) |
+#define HIGHS (ONES * (UCHAR_MAX / 2 + 1)) |
+#define HASZERO(x) ((x)-ONES & ~(x)&HIGHS) |
-char *__stpncpy(char *restrict d, const char *restrict s, size_t n) |
-{ |
- size_t *wd; |
- const size_t *ws; |
+char* __stpncpy(char* restrict d, const char* restrict s, size_t n) { |
+ size_t* wd; |
+ const size_t* ws; |
- if (((uintptr_t)s & ALIGN) == ((uintptr_t)d & ALIGN)) { |
- for (; ((uintptr_t)s & ALIGN) && n && (*d=*s); n--, s++, d++); |
- if (!n || !*s) goto tail; |
- wd=(void *)d; ws=(const void *)s; |
- for (; n>=sizeof(size_t) && !HASZERO(*ws); |
- n-=sizeof(size_t), ws++, wd++) *wd = *ws; |
- d=(void *)wd; s=(const void *)ws; |
- } |
- for (; n && (*d=*s); n--, s++, d++); |
+ if (((uintptr_t)s & ALIGN) == ((uintptr_t)d & ALIGN)) { |
+ for (; ((uintptr_t)s & ALIGN) && n && (*d = *s); n--, s++, d++) |
+ ; |
+ if (!n || !*s) |
+ goto tail; |
+ wd = (void*)d; |
+ ws = (const void*)s; |
+ for (; n >= sizeof(size_t) && !HASZERO(*ws); |
+ n -= sizeof(size_t), ws++, wd++) |
+ *wd = *ws; |
+ d = (void*)wd; |
+ s = (const void*)ws; |
+ } |
+ for (; n && (*d = *s); n--, s++, d++) |
+ ; |
tail: |
- memset(d, 0, n); |
- return d; |
+ memset(d, 0, n); |
+ return d; |
} |
weak_alias(__stpncpy, stpncpy); |
- |