Split Block

Task

Implement the function split_block

• Given a block_header* and a size_t number of bytes to allocate, return the number of free bytes left.
• Don’t modify the struct definition at the top of the file

Function Signature

// Given a block_header* and a size_t number of bytes to allocate, return 
// the number of free bytes left.
//
size_t split_block(struct block_header* block, int32_t bytes_to_alloc);

---

Testing

Compiling

• Use gcc to compile the program and use ./ to run the program

$ gcc split_block.c -o split_block
$ ./split_block

• You must compile your code and get the executable file that is named exactly as above for the auto-grader to run

Example

To test the function, create a struct block_header block, set the size_status, and plug values into the function.

Test Case 1

Input: size_status = 0x0000000000000080, bytes_to_alloc = 40
Output: 80

Test Case 2

Input: size_status = 0x0000000000000030, bytes_to_alloc = 33
Output: 0

---

Code

#include <stdlib.h>
#include <stdint.h>
#include <stddef.h>
 
struct block_header {
    size_t size_status;
};
 
size_t split_block(struct block_header* block, size_t bytes_to_alloc){
    size_t allocd = 8 + bytes_to_alloc;
    int dif = allocd % 16;
    if(dif != 0){
            allocd += 16 - dif;
    }
    return block->size_status - allocd;
}
```80