Index: fusl/src/string/memccpy.c |
diff --git a/fusl/src/string/memccpy.c b/fusl/src/string/memccpy.c |
index 7c233d5e90571f20ed06819575343657495b8246..82e5fac51c09e890af532559f6d23acd2f9b7082 100644 |
--- a/fusl/src/string/memccpy.c |
+++ b/fusl/src/string/memccpy.c |
@@ -2,30 +2,36 @@ |
#include <stdint.h> |
#include <limits.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) |
-void *memccpy(void *restrict dest, const void *restrict src, int c, size_t n) |
-{ |
- unsigned char *d = dest; |
- const unsigned char *s = src; |
- size_t *wd, k; |
- const size_t *ws; |
+void* memccpy(void* restrict dest, const void* restrict src, int c, size_t n) { |
+ unsigned char* d = dest; |
+ const unsigned char* s = src; |
+ size_t *wd, k; |
+ const size_t* ws; |
- c = (unsigned char)c; |
- if (((uintptr_t)s & ALIGN) == ((uintptr_t)d & ALIGN)) { |
- for (; ((uintptr_t)s & ALIGN) && n && (*d=*s)!=c; n--, s++, d++); |
- if ((uintptr_t)s & ALIGN) goto tail; |
- k = ONES * c; |
- wd=(void *)d; ws=(const void *)s; |
- for (; n>=sizeof(size_t) && !HASZERO(*ws^k); |
- n-=sizeof(size_t), ws++, wd++) *wd = *ws; |
- d=(void *)wd; s=(const void *)ws; |
- } |
- for (; n && (*d=*s)!=c; n--, s++, d++); |
+ c = (unsigned char)c; |
+ if (((uintptr_t)s & ALIGN) == ((uintptr_t)d & ALIGN)) { |
+ for (; ((uintptr_t)s & ALIGN) && n && (*d = *s) != c; n--, s++, d++) |
+ ; |
+ if ((uintptr_t)s & ALIGN) |
+ goto tail; |
+ k = ONES * c; |
+ wd = (void*)d; |
+ ws = (const void*)s; |
+ for (; n >= sizeof(size_t) && !HASZERO(*ws ^ k); |
+ n -= sizeof(size_t), ws++, wd++) |
+ *wd = *ws; |
+ d = (void*)wd; |
+ s = (const void*)ws; |
+ } |
+ for (; n && (*d = *s) != c; n--, s++, d++) |
+ ; |
tail: |
- if (*s==c) return d+1; |
- return 0; |
+ if (*s == c) |
+ return d + 1; |
+ return 0; |
} |