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authorNicholas Noll <nbnoll@eml.cc>2021-10-26 21:32:55 -0700
committerNicholas Noll <nbnoll@eml.cc>2021-10-26 21:51:49 -0700
commit189b9e23edfe60b7e82c4c7b6071a3f98799653a (patch)
tree77c1f32726446deb298a0d2e6389358bfe16bd32 /sys/libunicode/internal.h
parent29b56ef4e4113bcd091b19d6926f18814162ca53 (diff)
fix(unicode): renamed functions to be easier to understand their functions
Diffstat (limited to 'sys/libunicode/internal.h')
-rw-r--r--sys/libunicode/internal.h12
1 files changed, 11 insertions, 1 deletions
diff --git a/sys/libunicode/internal.h b/sys/libunicode/internal.h
index bf376b2..31ed2ae 100644
--- a/sys/libunicode/internal.h
+++ b/sys/libunicode/internal.h
@@ -4,8 +4,18 @@
#include <base.h>
#include <libunicode.h>
+/* UTF-8 code
+ * 1 byte:
+ * 0xxxxxxx
+ * 2 byte:
+ * 110xxxxx 10xxxxxx
+ * 3 byte:
+ * 1110xxxx 10xxxxxx 10xxxxxx
+ * 4 byte:
+ * 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+ */
#define Bit(i) (7-(i))
-/* N 0's preceded by i 1's e.g. T(Bit(2)) is 1100 0000 */
+/* 0's preceded by i 1's e.g. T(Bit(2)) is 1100 0000 */
#define Tbyte(i) (((1 << (Bit(i)+1))-1) ^ 0xFF)
/* 0000 0000 0000 0111 1111 1111 */
#define RuneX(i) ((1 << (Bit(i) + ((i)-1)*Bitx))-1)