1 files changed, 44 insertions, 0 deletions
diff --git a/src/pdclib/functions/stdlib/exit.c b/src/pdclib/functions/stdlib/exit.c
new file mode 100644
index 0000000..e636a32
--- /dev/null
+++ b/src/pdclib/functions/stdlib/exit.c
@@ -0,0 +1,44 @@
+/* exit( int )
+
+   This file is part of the Public Domain C Library (PDCLib).
+   Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+#include <stdlib.h>
+
+#ifndef REGTEST
+
+/* TODO - "except that a function is called after any previously registered
+   functions that had already been called at the time it was registered.
+*/
+
+/* TODO: 32 is guaranteed. This should be dynamic but ATM gives problems
+   with my malloc.
+*/
+#define NUMBER_OF_SLOTS 40
+
+void (*_PDCLIB_exitstack[ NUMBER_OF_SLOTS ])( void ) = { _PDCLIB_closeall };
+size_t _PDCLIB_exitptr = NUMBER_OF_SLOTS;
+
+void exit( int status )
+{
+    while ( _PDCLIB_exitptr < NUMBER_OF_SLOTS )
+    {
+        _PDCLIB_exitstack[ _PDCLIB_exitptr++ ]();
+    }
+    _Exit( status );
+}
+
+#endif
+
+#ifdef TEST
+
+#include "_PDCLIB_test.h"
+
+int main( void )
+{
+    /* Unwinding of regstack tested in atexit(). */
+    return TEST_RESULTS;
+}
+
+#endif