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authorAlon Zakai <alonzakai@gmail.com>2014-01-13 16:55:19 -0800
committerAlon Zakai <alonzakai@gmail.com>2014-01-13 16:56:03 -0800
commitcd1edebb5034ea52396a5b68304e84ae80878740 (patch)
tree6a6f8364ea74985d11c4f6ff74e5b80e08dc849d /system/lib/libc/musl/src/string/strchrnul.c
parentaf59788f8b7b76515e36bee1bf66edf497b801db (diff)
parent2914deb17f3857bb02eeec87a58a3ed6d4a8853a (diff)
Merge branch 'incoming' of github.com:kripken/emscripten into incoming1.8.8
conflicts: tests/test_core.py tools/shared.py
Diffstat (limited to 'system/lib/libc/musl/src/string/strchrnul.c')
-rw-r--r--system/lib/libc/musl/src/string/strchrnul.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/system/lib/libc/musl/src/string/strchrnul.c b/system/lib/libc/musl/src/string/strchrnul.c
new file mode 100644
index 00000000..ceae4d45
--- /dev/null
+++ b/system/lib/libc/musl/src/string/strchrnul.c
@@ -0,0 +1,27 @@
+#include <string.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <limits.h>
+#include "libc.h"
+
+#define ALIGN (sizeof(size_t))
+#define ONES ((size_t)-1/UCHAR_MAX)
+#define HIGHS (ONES * (UCHAR_MAX/2+1))
+#define HASZERO(x) ((x)-ONES & ~(x) & HIGHS)
+
+char *__strchrnul(const char *s, int c)
+{
+ size_t *w, k;
+
+ c = (unsigned char)c;
+ if (!c) return (char *)s + strlen(s);
+
+ for (; (uintptr_t)s % ALIGN; s++)
+ if (!*s || *(unsigned char *)s == c) return (char *)s;
+ k = ONES * c;
+ for (w = (void *)s; !HASZERO(*w) && !HASZERO(*w^k); w++);
+ for (s = (void *)w; *s && *(unsigned char *)s != c; s++);
+ return (char *)s;
+}
+
+weak_alias(__strchrnul, strchrnul);