--- a/src/impl/fallback.c	Mon Nov 25 00:33:02 2024 -0500
+++ b/src/impl/fallback.c	Thu Apr 24 00:54:02 2025 -0400
@@ -1,3 +1,27 @@
+/**
+ * vec - a tiny SIMD vector library in C99
+ * 
+ * Copyright (c) 2024 Paper
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+**/
+
 #include "vec/impl/fallback.h"
 
 #include <string.h>
@@ -7,8 +31,8 @@
 // memory is unknown or yields incorrect results from the generic functions.
 // This is *extremely* unlikely; for x86 the layout is exactly the same in
 // memory as the generic functions (i.e. it is literally stored as an array of
-// integers). This is likely true for AltiVec and NEON as well, but those
-// aren't tested for now.
+// integers). This is also true for AltiVec. This is likely true for NEON as well,
+// but that isn't tested for now.
 
 #define VEC_FALLBACK_OPERATION(op, sign, csign, bits, size) \
 	do { \