diff options
Diffstat (limited to 'jni/ruby/missing/memcmp.c')
-rw-r--r-- | jni/ruby/missing/memcmp.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/jni/ruby/missing/memcmp.c b/jni/ruby/missing/memcmp.c new file mode 100644 index 0000000..a81eec4 --- /dev/null +++ b/jni/ruby/missing/memcmp.c @@ -0,0 +1,18 @@ +/* public domain rewrite of memcmp(3) */ + +#include "ruby/missing.h" +#include <stddef.h> + +int +memcmp(const void *s1, const void *s2, size_t len) +{ + register unsigned char *a = (unsigned char*)s1; + register unsigned char *b = (unsigned char*)s2; + register int tmp; + + for (; len; --len) { + if (tmp = *a++ - *b++) + return tmp; + } + return 0; +} |