user: What is the c source code of the assembly code below:

```asm
<find_iso_from_start>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbx
  lea    -0xc0000(%rsp),%r11
L40:
  sub    $0x1000,%rsp
  orq    $0x0,(%rsp)
  cmp    %r11,%rsp
  jne    L40
  sub    $0x48,%rsp
  mov    $0x1,%r12d
  mov    %esi,-0xc0054(%rbp)
  mov    %ecx,%r14d
  mov    %esi,%ecx
  mov    %edx,%ebx
  shl    %cl,%r12d
  mov    %rsp,%rcx
  mov    %edi,%r13d
  mov    %r8d,%r11d
  mov    %r9d,%r15d
  mov    %fs:0x28,%rax
  mov    %rax,-0x38(%rbp)
  xor    %eax,%eax
  movslq %r12d,%rax
  lea    0xf(,%rax,4),%rax
  mov    %rax,%rdx
  and    $0xfffffffffffff000,%rax
  sub    %rax,%rcx
  and    $0xfffffffffffffff0,%rdx
  cmp    %rcx,%rsp
  je     L72
L58:
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  cmp    %rcx,%rsp
  jne    L58
L72:
  and    $0xfff,%edx
  sub    %rdx,%rsp
  test   %rdx,%rdx
  jne    L61
L1:
  movl   $0x0,-0xc0048(%rbp)
  mov    %rsp,%rsi
  movl   $0x0,-0xc0044(%rbp)
  mov    %r13d,-0xc0040(%rbp)
  test   %r12d,%r12d
  jle    L121
  lea    -0x1(%r12),%eax
  cmp    $0x2,%eax
  jbe    L80
  mov    %r12d,%edx
  movdqa D9(%rip),%xmm0
  movdqa D6(%rip),%xmm2
  mov    %rsi,%rax
  shr    $0x2,%edx
  shl    $0x4,%rdx
  add    %rsi,%rdx
  nopw   0x0(%rax,%rax,1)
L9:
  movdqa %xmm0,%xmm1
  add    $0x10,%rax
  paddd  %xmm2,%xmm0
  movups %xmm1,-0x10(%rax)
  cmp    %rdx,%rax
  jne    L9
  mov    %r12d,%eax
  and    $0xfffffffc,%eax
  test   $0x3,%r12b
  je     L121
L94:
  movslq %eax,%rdx
  lea    0x1(%rax),%ecx
  lea    (%rsi,%rdx,4),%rdx
  mov    %eax,(%rdx)
  cmp    %ecx,%r12d
  jle    L121
  add    $0x2,%eax
  mov    %ecx,0x4(%rdx)
  cmp    %eax,%r12d
  jle    L121
  mov    %eax,0x8(%rdx)
L121:
  lea    -0x80040(%rbp),%r10
  mov    %ebx,%r9d
  mov    %r12d,%ecx
  mov    %r13d,%edi
  mov    %r10,%rdx
  lea    -0xc0048(%rbp),%r8
  mov    %r11d,-0xc0058(%rbp)
  mov    %r10,-0xc0070(%rbp)
  mov    %rsi,-0xc0068(%rbp)
  call   <populate_candidates@plt>
  mov    %r14d,%r9d
  mov    %r12d,%ecx
  mov    %r13d,%edi
  mov    -0xc0068(%rbp),%rsi
  lea    -0x40040(%rbp),%rdx
  lea    -0xc0044(%rbp),%r8
  mov    %rdx,-0xc0060(%rbp)
  call   <populate_candidates@plt>
  mov    -0xc0058(%rbp),%r11d
  mov    -0xc0070(%rbp),%rdx
  lea    -0xc0040(%rbp),%rdi
  mov    -0xc0044(%rbp),%r9d
  mov    -0xc0048(%rbp),%ecx
  mov    $0x1,%esi
  lea    (%r11,%r15,1),%eax
  mov    -0xc0060(%rbp),%r8
  push   %rax
  mov    -0xc0054(%rbp),%eax
  push   %rax
  push   %r15
  push   %r11
  push   %r14
  push   %rbx
  call   <find_iso@plt>
  mov    -0x38(%rbp),%rdx
  sub    %fs:0x28,%rdx
  jne    L0
  lea    -0x28(%rbp),%rsp
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  pop    %rbp
  ret
  nopw   0x0(%rax,%rax,1)
L61:
  orq    $0x0,-0x8(%rsp,%rdx,1)
  jmp    L1
L80:
  xor    %eax,%eax
  jmp    L94
L0:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: unpack_data
arguments: tag: D9
data_type: byte[16]
name: unpack_data
arguments: tag: D6
data_type: byte[16]

tool: {"D9": [0x00,0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x02,0x00,0x00,0x00,0x03,0x00,0x00,0x00]}

tool: {"D6": [0x04,0x00,0x00,0x00,0x04,0x00,0x00,0x00,0x04,0x00,0x00,0x00,0x04,0x00,0x00,0x00]}

assistant: ```c
uint16_t find_iso_from_start(uint16_t start, uint8_t n, uint8_t min_hd, uint8_t min_iso, uint16_t a_len, uint16_t min_b_len) {
  uint16_t code[(1 << 16)];
  uint16_t next_candidates[(1 << 16)];
  uint16_t next_b_candidates[(1 << 16)];
  uint16_t icand = 1 << n;
  uint16_t candidates[icand];
  int i;
  uint16_t nc, bc;
  uint16_t inext_cand = 0;
  uint16_t inext_b_cand = 0;
  code[0] = start;
  for (i = 0; i < icand; i++)
    candidates[i] = i;
  populate_candidates(start, candidates, next_candidates, icand, &inext_cand, min_hd);
  populate_candidates(start, candidates, next_b_candidates, icand, &inext_b_cand, min_iso);
  return find_iso(&code[0], 1, &next_candidates[0], inext_cand, &next_b_candidates[0], inext_b_cand, min_hd, min_iso, a_len, min_b_len, n, a_len + min_b_len);
}
```