user: Demonstrate the C code that generates the assembly output below:

```asm
<mp_unexp_sub>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %edi,-0x14(%rbp)
  mov    %esi,-0x18(%rbp)
  mov    %edx,-0x1c(%rbp)
  mov    %rcx,-0x28(%rbp)
  mov    %r8,-0x30(%rbp)
  mov    %r9,-0x38(%rbp)
  mov    -0x1c(%rbp),%eax
  cmp    -0x14(%rbp),%eax
  jle    L10
  mov    -0x14(%rbp),%eax
  mov    %eax,-0x1c(%rbp)
L10:
  movl   $0x0,-0xc(%rbp)
  mov    -0x14(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,-0x10(%rbp)
  jmp    L20
L53:
  mov    -0x10(%rbp),%eax
  cltq
  lea    (%rax,%rax,1),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzwl (%rax),%eax
  movswl %ax,%edx
  mov    -0x10(%rbp),%eax
  sub    -0x1c(%rbp),%eax
  cltq
  lea    (%rax,%rax,1),%rcx
  mov    -0x30(%rbp),%rax
  add    %rcx,%rax
  movzwl (%rax),%eax
  cwtl
  sub    %eax,%edx
  mov    -0xc(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x4(%rbp)
  cmpl   $0x0,-0x4(%rbp)
  jns    L107
  mov    $0xffffffff,%eax
  jmp    L78
L107:
  mov    $0x0,%eax
L78:
  mov    %eax,-0xc(%rbp)
  mov    -0x4(%rbp),%eax
  mov    %eax,%edx
  mov    -0x18(%rbp),%eax
  mov    %eax,%ecx
  mov    -0xc(%rbp),%eax
  and    %ecx,%eax
  add    %eax,%edx
  mov    -0x10(%rbp),%eax
  cltq
  lea    (%rax,%rax,1),%rcx
  mov    -0x38(%rbp),%rax
  add    %rcx,%rax
  mov    %dx,(%rax)
  subl   $0x1,-0x10(%rbp)
L20:
  mov    -0x10(%rbp),%eax
  cmp    -0x1c(%rbp),%eax
  jge    L53
  mov    -0x1c(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,-0x10(%rbp)
  jmp    L122
L66:
  mov    -0x10(%rbp),%eax
  cltq
  lea    (%rax,%rax,1),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzwl (%rax),%eax
  movswl %ax,%edx
  mov    -0xc(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x4(%rbp)
  cmpl   $0x0,-0x4(%rbp)
  jns    L117
  mov    $0xffffffff,%eax
  jmp    L178
L117:
  mov    $0x0,%eax
L178:
  mov    %eax,-0xc(%rbp)
  mov    -0x4(%rbp),%eax
  mov    %eax,%edx
  mov    -0x18(%rbp),%eax
  mov    %eax,%ecx
  mov    -0xc(%rbp),%eax
  and    %ecx,%eax
  add    %eax,%edx
  mov    -0x10(%rbp),%eax
  cltq
  lea    (%rax,%rax,1),%rcx
  mov    -0x38(%rbp),%rax
  add    %rcx,%rax
  mov    %dx,(%rax)
  subl   $0x1,-0x10(%rbp)
L122:
  cmpl   $0x0,-0x10(%rbp)
  jns    L66
  movl   $0x0,-0x8(%rbp)
  movl   $0x0,-0x10(%rbp)
  jmp    L43
L127:
  mov    -0x10(%rbp),%eax
  add    $0x1,%eax
  mov    %eax,-0x8(%rbp)
  addl   $0x1,-0x10(%rbp)
L43:
  mov    -0x10(%rbp),%eax
  cmp    -0x14(%rbp),%eax
  jge    L19
  mov    -0x10(%rbp),%eax
  cltq
  lea    (%rax,%rax,1),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movzwl (%rax),%eax
  test   %ax,%ax
  je     L127
L19:
  cmpl   $0x0,-0x8(%rbp)
  jle    L29
  mov    -0x8(%rbp),%eax
  cmp    -0x14(%rbp),%eax
  jge    L29
  movl   $0x0,-0x10(%rbp)
  jmp    L128
L164:
  mov    -0x10(%rbp),%edx
  mov    -0x8(%rbp),%eax
  add    %edx,%eax
  cltq
  lea    (%rax,%rax,1),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  mov    -0x10(%rbp),%edx
  movslq %edx,%rdx
  lea    (%rdx,%rdx,1),%rcx
  mov    -0x38(%rbp),%rdx
  add    %rcx,%rdx
  movzwl (%rax),%eax
  mov    %ax,(%rdx)
  addl   $0x1,-0x10(%rbp)
L128:
  mov    -0x14(%rbp),%eax
  sub    -0x8(%rbp),%eax
  cmp    %eax,-0x10(%rbp)
  jl     L164
  mov    -0x14(%rbp),%eax
  sub    -0x8(%rbp),%eax
  mov    %eax,-0x10(%rbp)
  jmp    L111
L84:
  mov    -0x10(%rbp),%eax
  cltq
  lea    (%rax,%rax,1),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movw   $0x0,(%rax)
  addl   $0x1,-0x10(%rbp)
L111:
  mov    -0x10(%rbp),%eax
  cmp    -0x14(%rbp),%eax
  jl     L84
L29:
  mov    -0x8(%rbp),%eax
  pop    %rbp
  ret
```

assistant: ```c
int mp_unexp_sub(int n, int radix, int expdif, short int in1[], short int in2[], short int out[]) {
  int j, x, borrow, ncancel;
  if (expdif > n) {
    expdif = n;
  }
  borrow = 0;
  for (j = n - 1; j >= expdif; j--) {
    x = in1[j] - in2[j - expdif] + borrow;
    borrow = x < 0 ? -1 : 0;
    out[j] = (short int)(x + (radix & borrow));
  }
  for (j = expdif - 1; j >= 0; j--) {
    x = in1[j] + borrow;
    borrow = x < 0 ? -1 : 0;
    out[j] = (short int)(x + (radix & borrow));
  }
  ncancel = 0;
  for (j = 0; j < n && out[j] == 0; j++) {
    ncancel = j + 1;
  }
  if (ncancel > 0 && ncancel < n) {
    for (j = 0; j < n - ncancel; j++) {
      out[j] = out[j + ncancel];
    }
    for (j = n - ncancel; j < n; j++) {
      out[j] = 0;
    }
  }
  return ncancel;
}
```