A lightweight, portable C library for dynamic memory allocation, reallocation, and deallocation with additional utilities for managing memory sizes. Designed with compatibility for C89/90 standards and integrating seamlessly with systems requiring precise memory control.

• Simple and straightforward API for memory operations.
• Functions for memory allocation, reallocation, and deallocation.
• Additional functions to handle memory with size information for better management.
• Error handling through return codes.

Include the mem.h header file in your project directory and ensure your compiler settings are compatible with C89/90 standards.

Allocates memory of a specified size and updates the pointer.

• _Dst: A pointer to the pointer variable that will point to the allocated memory.
• _Size: The size of the memory block to allocate, in bytes.
• Returns: MEM_SUCCESS or MEM_FAILURE.

Allocates memory of a specified size and stores the size information.

• _Dst: A pointer to the pointer variable that will point to the start of the usable allocated memory.
• _Size: The size of the memory block to allocate, in bytes.
• Returns: MEM_SUCCESS or MEM_FAILURE.

Retrieves the size of an allocated memory block.

• _Size: A pointer to the variable where the size information will be stored.
• _Ptr: A pointer to the allocated memory block.
• Returns: MEM_SUCCESS or MEM_FAILURE.

Retrieves the total allocated size of a memory block, including space for size information.

• _Size: A pointer to the variable where the total allocated size will be stored.
• _Ptr: A pointer to the allocated memory block.
• Returns: The total allocated size in bytes.

Reallocates memory to a new size and updates pointers.

• _New: A pointer to the pointer variable that will point to the newly allocated memory block.
• _Size: The new size of the memory block, in bytes.
• _Old: A pointer to the pointer variable that currently points to the memory block to be reallocated.
• Returns: MEM_SUCCESS or MEM_FAILURE.

Reallocates memory with size information to a new size and updates pointers.

• _New: A pointer to the pointer variable that will point to the start of the usable area of the newly allocated memory block.
• _Size: The new size of the memory block, in bytes.
• _Old: A pointer to the pointer variable that currently points to the memory block to be reallocated.
• Returns: MEM_SUCCESS or MEM_FAILURE.

Frees previously allocated memory and nullifies the pointer.

• _Ptr: A pointer to the pointer variable that points to the memory block to be freed.
• Returns: MEM_SUCCESS or MEM_FAILURE.

Frees previously allocated memory with size information and nullifies the pointer.

• _Ptr: A pointer to the pointer variable that points to the memory block to be freed.
• Returns: MEM_SUCCESS or MEM_FAILURE.

#include "mem.h"

int main() {
    char *buffer = NULL;
    if (mem_alloc(&buffer, 128) == MEM_SUCCESS) {
        // Use the buffer
    }

    // Free the buffer
    mem_free(&buffer);

    return 0;
}