1 files changed, 55 insertions, 0 deletions
diff --git a/src/pdclib/functions/stdio/setbuf.c b/src/pdclib/functions/stdio/setbuf.c
new file mode 100644
index 0000000..6c32072
--- /dev/null
+++ b/src/pdclib/functions/stdio/setbuf.c
@@ -0,0 +1,55 @@
+/* setbuf( FILE *, char * )
+
+   This file is part of the Public Domain C Library (PDCLib).
+   Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+#include <stdio.h>
+
+#ifndef REGTEST
+
+void setbuf( struct _PDCLIB_file_t * _PDCLIB_restrict stream, char * _PDCLIB_restrict buf )
+{
+    if ( buf == NULL )
+    {
+        setvbuf( stream, buf, _IONBF, BUFSIZ );
+    }
+    else
+    {
+        setvbuf( stream, buf, _IOFBF, BUFSIZ );
+    }
+}
+
+#endif
+
+#ifdef TEST
+
+#include "_PDCLIB_test.h"
+
+#include <stdlib.h>
+
+int main( void )
+{
+    /* TODO: Extend testing once setvbuf() is finished. */
+#ifndef REGTEST
+    char buffer[ BUFSIZ + 1 ];
+    FILE * fh;
+    /* full buffered */
+    TESTCASE( ( fh = tmpfile() ) != NULL );
+    setbuf( fh, buffer );
+    TESTCASE( fh->buffer == buffer );
+    TESTCASE( fh->bufsize == BUFSIZ );
+    TESTCASE( ( fh->status & ( _IOFBF | _IONBF | _IOLBF ) ) == _IOFBF );
+    TESTCASE( fclose( fh ) == 0 );
+    /* not buffered */
+    TESTCASE( ( fh = tmpfile() ) != NULL );
+    setbuf( fh, NULL );
+    TESTCASE( ( fh->status & ( _IOFBF | _IONBF | _IOLBF ) ) == _IONBF );
+    TESTCASE( fclose( fh ) == 0 );
+#else
+    puts( " NOTEST setbuf() test driver is PDCLib-specific." );
+#endif
+    return TEST_RESULTS;
+}
+
+#endif