user: What would the C source look like for the assembly code provided here:

```asm
<transpose>:
  endbr64
  push   %r15
  xor    %eax,%eax
  push   %r14
  push   %r13
  mov    %esi,%r13d
  push   %r12
  push   %rbp
  lea    0x0(,%r13,8),%ebp
  push   %rbx
  mov    %rdi,%rbx
  lea    (%rsi,%rsi,1),%edi
  sub    $0x38,%rsp
  call   <mallocate@plt>
  mov    %eax,0x18(%rsp)
  movslq %eax,%r14
  test   %r13d,%r13d
  jle    L173
  lea    -0x1(%r13),%eax
  mov    %rbx,%rsi
  lea    0x8(%rbx,%rax,8),%rdi
  jmp    L114
  nopl   0x0(%rax,%rax,1)
L206:
  add    $0x8,%rsi
  cmp    %rsi,%rdi
  je     L191
L114:
  mov    (%rsi),%rdx
  test   %rdx,%rdx
  je     L206
  movswq (%rdx),%rax
  test   %ax,%ax
  js     L206
  nopw   0x0(%rax,%rax,1)
L11:
  add    $0x2,%rdx
  addw   $0x1,(%r14,%rax,2)
  movswq (%rdx),%rax
  test   %ax,%ax
  jns    L11
  add    $0x8,%rsi
  cmp    %rsi,%rdi
  jne    L114
L191:
  mov    %ebp,%edi
  xor    %eax,%eax
  call   <mallocate@plt>
  mov    %ebp,%edi
  movslq %eax,%r15
  xor    %eax,%eax
  mov    %r15,0x20(%rsp)
  call   <mallocate@plt>
  mov    %r14,%rdx
  movslq %eax,%rbp
  mov    %eax,0x1c(%rsp)
  mov    %r13d,%eax
  mov    %rbp,%rcx
  mov    %rbp,0x28(%rsp)
  lea    (%r14,%rax,2),%r12
  sub    %r15,%rcx
  mov    %rcx,0x10(%rsp)
  nopw   0x0(%rax,%rax,1)
L18:
  movswl (%rdx),%eax
  mov    %eax,0x4(%rsp)
  test   %eax,%eax
  jle    L10
  lea    0x2(%rax,%rax,1),%edi
  xor    %eax,%eax
  mov    %rdx,0x8(%rsp)
  call   <mallocate@plt>
  mov    0x4(%rsp),%esi
  mov    0x10(%rsp),%rcx
  mov    $0xffffffff,%edi
  cltq
  mov    0x8(%rsp),%rdx
  movswq %si,%rsi
  mov    %rax,(%r15)
  mov    %rax,(%rcx,%r15,1)
  mov    %di,(%rax,%rsi,2)
L10:
  add    $0x2,%rdx
  add    $0x8,%r15
  cmp    %rdx,%r12
  jne    L18
  mov    0x18(%rsp),%edx
  test   %edx,%edx
  jne    L50
L181:
  xor    %r9d,%r9d
  jmp    L22
  nopl   0x0(%rax)
L178:
  add    $0x1,%r9
  cmp    %r9d,%r13d
  jle    L88
L22:
  mov    (%rbx,%r9,8),%rdx
  test   %rdx,%rdx
  je     L178
  movswq (%rdx),%rax
  test   %ax,%ax
  js     L178
  mov    %r9d,%r10d
  xchg   %ax,%ax
L175:
  lea    0x0(%rbp,%rax,8),%rsi
  add    $0x2,%rdx
  mov    (%rsi),%rax
  lea    0x2(%rax),%rdi
  mov    %rdi,(%rsi)
  mov    %r10w,(%rax)
  movswq (%rdx),%rax
  test   %ax,%ax
  jns    L175
  add    $0x1,%r9
  cmp    %r9d,%r13d
  jg     L22
L88:
  mov    0x1c(%rsp),%ecx
  test   %ecx,%ecx
  jne    L208
L127:
  mov    0x20(%rsp),%rax
  add    $0x38,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L208:
  mov    0x28(%rsp),%rdi
  call   <free@plt>
  jmp    L127
L50:
  mov    %r14,%rdi
  call   <free@plt>
  jmp    L181
L173:
  mov    %ebp,%edi
  xor    %eax,%eax
  call   <mallocate@plt>
  mov    %ebp,%edi
  cltq
  mov    %rax,0x20(%rsp)
  xor    %eax,%eax
  call   <mallocate@plt>
  mov    %eax,0x1c(%rsp)
  cltq
  mov    %rax,0x28(%rsp)
  mov    0x18(%rsp),%eax
  test   %eax,%eax
  je     L88
  mov    %r14,%rdi
  call   <free@plt>
  jmp    L88
```

assistant: ```c
short **transpose(short **R, int n) {
  register short **new_R;
  register short **temp_R;
  register short *nedges;
  register short *sp;
  register int i;
  register int k;
  nedges = ((short *)mallocate((unsigned)((n) * sizeof(short))));
  for (i = 0; i < n; i++) {
    sp = R[i];
    if (sp) {
      while (*sp >= 0)
        nedges[*sp++]++;
    }
  }
  new_R = ((short **)mallocate((unsigned)((n) * sizeof(short *))));
  temp_R = ((short **)mallocate((unsigned)((n) * sizeof(short *))));
  for (i = 0; i < n; i++) {
    k = nedges[i];
    if (k > 0) {
      sp = ((short *)mallocate((unsigned)((k + 1) * sizeof(short))));
      new_R[i] = sp;
      temp_R[i] = sp;
      sp[k] = -1;
    }
  }
  {
    if (nedges)
      free(nedges);
  };
  for (i = 0; i < n; i++) {
    sp = R[i];
    if (sp) {
      while (*sp >= 0)
        *temp_R[*sp++]++ = i;
    }
  }
  {
    if (temp_R)
      free(temp_R);
  };
  return (new_R);
}
```