1 files changed, 53 insertions, 0 deletions
diff --git a/src/malloc/realloc.c b/src/malloc/realloc.c
new file mode 100644
index 0000000..4356c2a
--- /dev/null
+++ b/src/malloc/realloc.c
@@ -0,0 +1,53 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015, 2016  Mattias Andrée (maandree@member.fsf.org)
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <stdlib.h>
+#include <slibc-alloc.h>
+
+
+
+/**
+ * Variant of `malloc` that extends, or shrinks, an existing allocation,
+ * if beneficial and possible, or creates a new allocation with the new
+ * size, copies the data, and frees the old allocation. The returned
+ * pointer has an alignment usable for any compiler-independent intrinsic
+ * data type, if a new pointer is returned.
+ * 
+ * On error, `ptr` is not freed.
+ * 
+ * @etymology  Memory (realloc)ation.
+ * 
+ * @param   ptr   Pointer to the beginning of the old memory allocation.
+ *                The process may crash if it does not point to the
+ *                beginning of a memory allocation on the heap.
+ *                However, if it is `NULL`, this function will behave
+ *                like `malloc`.
+ * @param   size  The new allocation size. If zero, this function will
+ *                behave like `free`, and will return `NULL`.
+ * @return        Pointer to the beginning of the new allocation.
+ *                If `size` is zero, `NULL` is returned. On error `NULL`
+ *                is returned and `errno` is set to indicate the error.
+ * 
+ * @throws  ENOMEM  The process cannot allocate more memory.
+ * 
+ * @since  Always.
+ */
+void* realloc(void* ptr, size_t size)
+{
+  return fast_realloc(ptr, size);
+}
+