Added MIT License

On branch main
Your branch is up to date with 'origin/main'.

Changes to be committed:
      new file:   ../LICENSE
      modified:   ../include/alloc.h
      modified:   ../include/calt.h
      modified:   ../include/mem.h
      modified:   alloc/alloc.c
      modified:   alloc/calloc.c
      modified:   alloc/free.c
      modified:   alloc/malloc.c
      modified:   alloc/memdup.c
      modified:   alloc/realloc.c
      modified:   mem/memccpy.c
      modified:   mem/memchr.c
      modified:   mem/memcmp.c
      modified:   mem/memcpy.c
      modified:   mem/memhash.c
      modified:   mem/memlen.c
      modified:   mem/memmem.c
      modified:   mem/memmove.c
      modified:   mem/memrchr.c
      modified:   mem/memrev.c
      modified:   mem/memset.c
      modified:   mem/memswap.c
      modified:   mem/memzero.c

3 files changed, 15 insertions, 4 deletions

diff --git a/include/alloc.h b/include/alloc.h
index bc8c3d8..6877f61 100644
--- a/include/alloc.h
+++ b/include/alloc.h
@@ -1,4 +1,8 @@
-#pragma once
+/*
+ * Copyright (c) 2023 Marc Pervaz Boocha
+ *
+ * SPDX-License-Identifier: MIT
+ */
 #ifndef CALT_ALLOC_H
 #define CALT_ALLOC_H
 #include <stddef.h>
diff --git a/include/calt.h b/include/calt.h
index 4ea43b0..3422a91 100644
--- a/include/calt.h
+++ b/include/calt.h
@@ -1,4 +1,8 @@
-#pragma once
+/*
+ * Copyright (c) 2023 Marc Pervaz Boocha
+ *
+ * SPDX-License-Identifier: MIT
+ */
 #ifndef CALT_CALT_H
 #define CALT_CALT_H
 
diff --git a/include/mem.h b/include/mem.h
index 3636bf3..b18822c 100644
--- a/include/mem.h
+++ b/include/mem.h
@@ -1,5 +1,8 @@
-#pragma once
-
+/*
+ * Copyright (c) 2023 Marc Pervaz Boocha
+ *
+ * SPDX-License-Identifier: MIT
+ */
 #ifndef CALT_MEM_H
 #define CALT_MEM_H
 #include <stddef.h>