diff --git a/gnu_decimals.c b/gnu_decimals.c
new file mode 100644
index 0000000..c860687
--- /dev/null
+++ b/gnu_decimals.c
@@ -0,0 +1,16 @@
+// @COMPILECMD gcc $@ -o $*.out
+#define _OPEN_SYS_ITOA_EXT
+#include <stdio.h>
+#include <stdlib.h>
+signed main() {
+	_Decimal32 d = 1;
+	for (int i = 0; i < sizeof(_Decimal32); i++) {
+		char c = *( ((char *)(&d)) + i );
+		for(int h = 0; h < 8; h++){
+			fputs(((c & 0b10000000) ? "1" : "0"), stdout);
+			c <<= 1;
+		}
+		fputs(".", stdout);
+	}
+	puts("");
+}