Simplify fseek/ftell.
Another step towards _FILE_OFFSET_BITS=64 support.
Bug: http://b/24807045
Change-Id: I00b83c81a7b108176c4d9437bc32611f73b7e967
diff --git a/libc/include/stdio.h b/libc/include/stdio.h
index fd653d9..268db78 100644
--- a/libc/include/stdio.h
+++ b/libc/include/stdio.h
@@ -73,9 +73,9 @@
#define __SMBF 0x0080 /* _buf is from malloc */
#define __SAPP 0x0100 /* fdopen()ed in append mode */
#define __SSTR 0x0200 /* this is an sprintf/snprintf string */
-#define __SOPT 0x0400 /* do fseek() optimization */
-#define __SNPT 0x0800 /* do not do fseek() optimization */
-#define __SOFF 0x1000 /* set iff _offset is in fact correct */
+/* #define __SOPT 0x0400 --- historical (do fseek() optimization). */
+/* #define __SNPT 0x0800 --- historical (do not do fseek() optimization). */
+/* #define __SOFF 0x1000 --- historical (set iff _offset is in fact correct). */
#define __SMOD 0x2000 /* true => fgetln modified _p text */
#define __SALC 0x4000 /* allocate string space dynamically */
#define __SIGN 0x8000 /* ignore this file in _fwalk */