Finish <stdio_ext.h>.
Implement __freading and __fwriting, and clarify the documentation that was
the cause of these not being implemented for years.
Bug: http://b/17157253
Test: ran tests
Change-Id: I89542c8131b13889e2585417a024050ecf2abcb7
diff --git a/libc/include/stdio_ext.h b/libc/include/stdio_ext.h
index fdf6772..3c5abc3 100644
--- a/libc/include/stdio_ext.h
+++ b/libc/include/stdio_ext.h
@@ -40,7 +40,9 @@
size_t __fbufsize(FILE*) __INTRODUCED_IN(23);
int __freadable(FILE*) __INTRODUCED_IN(23);
+int __freading(FILE*) __INTRODUCED_IN_FUTURE;
int __fwritable(FILE*) __INTRODUCED_IN(23);
+int __fwriting(FILE*) __INTRODUCED_IN_FUTURE;
int __flbf(FILE*) __INTRODUCED_IN(23);
void __fpurge(FILE*) __INTRODUCED_IN(23);
size_t __fpending(FILE*) __INTRODUCED_IN(23);