1 files changed, 21 insertions, 0 deletions
diff --git a/src/stdio/ferror.c b/src/stdio/ferror.c
new file mode 100644
index 00000000..609f7640
--- /dev/null
+++ b/src/stdio/ferror.c
@@ -0,0 +1,21 @@
+#include <stdio.h>
+#include "nonstd/assert.h"
+#include "nonstd/io.h"
+
+/** tests the file stream error indicator **/
+int ferror(FILE *stream)
+{
+	ASSERT_NONNULL(stream);
+	/*
+	RETURN(0, the error indicator is not set);
+	RETURN(NONZERO, the error indicator is set);
+	*/
+	return stream->err;
+}
+
+/***
+tests the error indicator of ARGUMENT(stream).
+***/
+/*
+STDC(1)
+*/