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

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r14
  push   %r13
  push   %r12
  push   %rbx
  sub    $0x10,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x28(%rbp)
  xor    %eax,%eax
  cmp    $0x2,%edi
  je     L138
  lea    -0x3000(%rsp),%rax
L137:
  cmp    %rax,%rsp
  je     L64
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L137
L64:
  sub    $0xe80,%rsp
  orq    $0x0,0xe78(%rsp)
  mov    %rsp,%rbx
  lea    -0x3000(%rsp),%rax
L84:
  cmp    %rax,%rsp
  je     L142
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L84
L138:
  mov    0x8(%rsi),%rdi
  call   <atoi@plt>
  mov    %rsp,%rcx
  mov    %eax,%r14d
  cltq
  lea    0xf(,%rax,8),%rax
  mov    %rax,%rsi
  mov    %rax,%rdx
  and    $0xfffffffffffff000,%rsi
  and    $0xfffffffffffffff0,%rdx
  sub    %rsi,%rcx
L264:
  cmp    %rcx,%rsp
  je     L159
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L264
L142:
  sub    $0xe80,%rsp
  orq    $0x0,0xe78(%rsp)
  mov    $0x7d0,%ecx
  mov    $0x7d0,%r14d
  mov    %rsp,%r13
L209:
  mov    %ecx,%edx
  movapd D13(%rip),%xmm0
  mov    %rbx,%rax
  shr    %edx
  sub    $0x1,%edx
  shl    $0x4,%rdx
  lea    0x10(%rbx,%rdx,1),%rdx
  nopl   0x0(%rax)
L123:
  movups %xmm0,(%rax)
  add    $0x10,%rax
  cmp    %rax,%rdx
  jne    L123
  mov    %ecx,%eax
  and    $0xfffffffe,%eax
  and    $0x1,%ecx
  je     L98
L16:
  mov    D13(%rip),%rcx
  cltq
  mov    %rcx,(%rbx,%rax,8)
L98:
  mov    $0xa,%r12d
  nopl   0x0(%rax)
L194:
  mov    %r13,%rdx
  mov    %rbx,%rsi
  mov    %r14d,%edi
  call   <eval_AtA_times_u@plt>
  mov    %rbx,%rdx
  mov    %r13,%rsi
  mov    %r14d,%edi
  call   <eval_AtA_times_u@plt>
  sub    $0x1,%r12d
  jne    L194
  test   %r14d,%r14d
  jle    L79
  cmp    $0x1,%r14d
  je     L147
  mov    %r14d,%edx
  pxor   %xmm5,%xmm5
  xor    %eax,%eax
  shr    %edx
  movapd %xmm5,%xmm3
  movapd %xmm5,%xmm0
  shl    $0x4,%rdx
  nopl   0x0(%rax)
L134:
  movupd 0x0(%r13,%rax,1),%xmm1
  movupd (%rbx,%rax,1),%xmm2
  add    $0x10,%rax
  mulpd  %xmm1,%xmm2
  mulpd  %xmm1,%xmm1
  addsd  %xmm2,%xmm0
  unpckhpd %xmm2,%xmm2
  addsd  %xmm1,%xmm3
  unpckhpd %xmm1,%xmm1
  addsd  %xmm2,%xmm0
  addsd  %xmm1,%xmm3
  cmp    %rax,%rdx
  jne    L134
  mov    %r14d,%eax
  and    $0xfffffffe,%eax
  and    $0x1,%r14d
  je     L133
L89:
  cltq
  movsd  0x0(%r13,%rax,8),%xmm1
  movsd  (%rbx,%rax,8),%xmm2
  mulsd  %xmm1,%xmm2
  mulsd  %xmm1,%xmm1
  addsd  %xmm2,%xmm0
  addsd  %xmm1,%xmm3
L133:
  divsd  %xmm3,%xmm0
  ucomisd %xmm0,%xmm5
  ja     L30
  sqrtsd %xmm0,%xmm0
L236:
  lea    D5(%rip),%rdi
  call   <printf@plt>
  mov    -0x28(%rbp),%rax
  sub    %fs:0x28,%rax
  jne    L243
  lea    -0x20(%rbp),%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %rbp
  ret
L159:
  and    $0xfff,%edx
  sub    %rdx,%rsp
  test   %rdx,%rdx
  jne    L18
L258:
  mov    %rax,%rdx
  mov    %rsp,%rcx
  and    $0xfffffffffffff000,%rax
  mov    %rsp,%rbx
  and    $0xfffffffffffffff0,%rdx
  sub    %rax,%rcx
L31:
  cmp    %rcx,%rsp
  je     L143
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L31
L79:
  pxor   %xmm5,%xmm5
  movapd %xmm5,%xmm3
  movapd %xmm5,%xmm0
  jmp    L133
L147:
  pxor   %xmm5,%xmm5
  xor    %eax,%eax
  movapd %xmm5,%xmm3
  movapd %xmm5,%xmm0
  jmp    L89
L18:
  orq    $0x0,-0x8(%rsp,%rdx,1)
  jmp    L258
L143:
  and    $0xfff,%edx
  sub    %rdx,%rsp
  test   %rdx,%rdx
  je     L224
  orq    $0x0,-0x8(%rsp,%rdx,1)
L224:
  mov    %rsp,%r13
  test   %r14d,%r14d
  jle    L98
  mov    %r14d,%ecx
  cmp    $0x1,%r14d
  jne    L209
  xor    %eax,%eax
  jmp    L16
L243:
  call   <__stack_chk_fail@plt>
L30:
  call   <sqrt@plt>
  jmp    L236
```

tool_calls: name: retrieve_data
arguments: tag: D13
datatype: byte[16]
name: retrieve_data
arguments: tag: D5
datatype: string

tool: {"D13": [0x00,0x00,0x00,0x00,0x00,0x00,0xf0,0x3f,0x00,0x00,0x00,0x00,0x00,0x00,0xf0,0x3f]}

tool: D5: %0.9f


assistant: ```c
int main(int argc, char *argv[]) {
  int i;
  int N = ((argc == 2) ? atoi(argv[1]) : 2000);
  double u[N], v[N], vBv, vv;
  for (i = 0; i < N; i++)
    u[i] = 1;
  for (i = 0; i < 10; i++) {
    eval_AtA_times_u(N, u, v);
    eval_AtA_times_u(N, v, u);
  }
  vBv = vv = 0;
  for (i = 0; i < N; i++) {
    vBv += u[i] * v[i];
    vv += v[i] * v[i];
  }
  printf("%0.9f\n", sqrt(vBv / vv));
  return 0;
}
```