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author | Jari Vetoniemi <jari.vetoniemi@indooratlas.com> | 2020-03-16 18:49:26 +0900 |
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committer | Jari Vetoniemi <jari.vetoniemi@indooratlas.com> | 2020-03-30 00:39:06 +0900 |
commit | fcbf63e62c627deae76c1b8cb8c0876c536ed811 (patch) | |
tree | 64cb17de3f41a2b6fef2368028fbd00349946994 /jni/ruby/missing/memcmp.c |
Fresh start
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; +} |