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

```asm
<fe_SigmaB2_at>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x68,%rsp
  mov    %rdi,%r15
  mov    %rsi,0x38(%rsp)
  mov    %edx,%ebp
  mov    %edx,0x58(%rsp)
  movsd  %xmm0,0x8(%rsp)
  mov    %ecx,%esi
  lea    -0x1(%rcx),%ecx
  mov    $0x1,%eax
  mov    %eax,%r14d
  shl    %cl,%r14d
  mov    %r14d,0x40(%rsp)
  mov    $0x2,%eax
  shl    %cl,%eax
  mov    %eax,%ebx
  mov    %eax,0x20(%rsp)
  lea    -0x1(%rax),%r13d
  mov    %r13d,0x5c(%rsp)
  lea    D36(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    %r14d,%esi
  lea    D58(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    %ebx,%esi
  lea    D40(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    %ebp,%esi
  lea    D14(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  movsd  0x8(%rsp),%xmm0
  lea    D18(%rip),%rdi
  mov    $0x1,%eax
  call   <printf@plt>
  test   %ebp,%ebp
  jle    L59
  imul   %ebx,%r13d
  mov    %r13d,0x44(%rsp)
  mov    %ebp,%eax
  mov    %rax,0x48(%rsp)
  mov    $0x0,%ebp
  pxor   %xmm3,%xmm3
  cvtsi2sd %r14d,%xmm3
  movsd  %xmm3,0x50(%rsp)
  jmp    L7
L98:
  lea    -0x1(%rbx),%r14d
  mov    0x20(%rsp),%ecx
  imul   %ecx,%r14d
  lea    (%r14,%rbx,1),%eax
  add    %eax,%eax
  cltq
  lea    -0x10(%r15,%rax,8),%rax
  movq   %r12,%xmm0
  addsd  (%rax),%xmm0
  movsd  %xmm0,(%rax)
  mov    0x24(%rsp),%edx
  lea    (%rdx,%rdx,1),%r13d
  lea    -0x1(%r13),%r12d
  imul   %ecx,%r12d
  lea    0x0(%r13,%r12,1),%eax
  cltq
  lea    -0x8(%r15,%rax,8),%rax
  movsd  0x28(%rsp),%xmm0
  addsd  (%rax),%xmm0
  movsd  %xmm0,(%rax)
  add    %ebx,%ebx
  lea    (%r12,%rbx,1),%eax
  cltq
  lea    -0x10(%r15,%rax,8),%rax
  movsd  0x30(%rsp),%xmm0
  addsd  (%rax),%xmm0
  movsd  %xmm0,(%rax)
  lea    (%r14,%rdx,1),%eax
  add    %eax,%eax
  cltq
  movsd  %xmm0,-0x8(%r15,%rax,8)
  movsd  0x18(%rsp),%xmm0
  call   <hat@plt>
  add    0x20(%rsp),%r12d
  movslq %r12d,%r12
  lea    -0x8(%r15,%r12,8),%rax
  mulsd  0x8(%rsp),%xmm0
  addsd  (%rax),%xmm0
  movsd  %xmm0,(%rax)
  mov    0x44(%rsp),%r12d
  add    %r12d,%r13d
  movslq %r13d,%r13
  movsd  %xmm0,-0x8(%r15,%r13,8)
  movsd  0x10(%rsp),%xmm0
  call   <hat@plt>
  mov    0x20(%rsp),%ecx
  lea    (%rcx,%r14,2),%eax
  cltq
  lea    -0x8(%r15,%rax,8),%rax
  mulsd  0x8(%rsp),%xmm0
  addsd  (%rax),%xmm0
  movsd  %xmm0,(%rax)
  add    %r12d,%ebx
  movslq %ebx,%rbx
  movsd  %xmm0,-0x10(%r15,%rbx,8)
  add    $0x1,%rbp
  cmp    0x48(%rsp),%rbp
  je     L59
L7:
  mov    0x38(%rsp),%rax
  movsd  0x50(%rsp),%xmm5
  mulsd  (%rax,%rbp,8),%xmm5
  movq   %xmm5,%r13
  movapd %xmm5,%xmm0
  call   <ceil@plt>
  mov    0x40(%rsp),%r14d
  mov    %r14d,%esi
  mov    %eax,%edi
  call   <mini@plt>
  mov    %eax,%edi
  mov    $0x1,%esi
  call   <maxi@plt>
  mov    %eax,%ebx
  movq   %r13,%xmm0
  subsd  D24(%rip),%xmm0
  call   <ceil@plt>
  lea    -0x1(%r14),%esi
  mov    %eax,%edi
  call   <mini@plt>
  mov    %eax,%edi
  mov    $0x1,%esi
  call   <maxi@plt>
  mov    %eax,%r14d
  mov    %eax,0x24(%rsp)
  pxor   %xmm1,%xmm1
  cvtsi2sd %ebx,%xmm1
  movq   %r13,%xmm0
  subsd  %xmm1,%xmm0
  addsd  D45(%rip),%xmm0
  movsd  %xmm0,0x10(%rsp)
  call   <hat@plt>
  call   <sq@plt>
  mulsd  0x8(%rsp),%xmm0
  movq   %xmm0,%r12
  pxor   %xmm1,%xmm1
  cvtsi2sd %r14d,%xmm1
  movq   %r13,%xmm0
  subsd  %xmm1,%xmm0
  addsd  D24(%rip),%xmm0
  movsd  %xmm0,0x18(%rsp)
  call   <hat@plt>
  call   <sq@plt>
  mulsd  0x8(%rsp),%xmm0
  movsd  %xmm0,0x28(%rsp)
  movsd  0x10(%rsp),%xmm0
  call   <hat@plt>
  movq   %xmm0,%r14
  movsd  0x18(%rsp),%xmm0
  call   <hat@plt>
  movq   %r14,%xmm6
  mulsd  %xmm0,%xmm6
  movapd %xmm6,%xmm0
  mulsd  0x8(%rsp),%xmm0
  movsd  %xmm0,0x30(%rsp)
  cmp    $0x9,%ebp
  jg     L98
  movapd %xmm0,%xmm3
  movsd  0x28(%rsp),%xmm2
  movq   %r12,%xmm1
  mov    0x24(%rsp),%edx
  mov    %ebx,%esi
  movq   %r13,%xmm0
  lea    D39(%rip),%rdi
  mov    $0x4,%eax
  call   <printf@plt>
  jmp    L98
L59:
  mov    0x20(%rsp),%r13d
  mov    %r13d,%ebp
  imul   %r13d,%ebp
  movslq %ebp,%rax
  pxor   %xmm0,%xmm0
  cvtsi2sdl 0x58(%rsp),%xmm0
  mulsd  0x8(%rsp),%xmm0
  movsd  %xmm0,-0x8(%r15,%rax,8)
  test   %ebp,%ebp
  jle    L2
  mov    %ebp,%ebp
  mov    $0x0,%ebx
  lea    D68(%rip),%r12
  mov    0x5c(%rsp),%r14d
  jmp    L8
L14:
  add    $0x1,%rbx
  cmp    %rbp,%rbx
  je     L2
L8:
  movsd  (%r15,%rbx,8),%xmm0
  mov    %r12,%rdi
  mov    $0x1,%eax
  call   <printf@plt>
  mov    %ebx,%eax
  cltd
  idiv   %r13d
  cmp    %edx,%r14d
  jne    L14
  mov    $0xa,%edi
  call   <putchar@plt>
  jmp    L14
L2:
  mov    $0xa,%edi
  call   <putchar@plt>
  add    $0x68,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
```

tool_calls: name: read_data
arguments: label: D36
type_guessed: string
name: read_data
arguments: label: D58
type_guessed: string
name: read_data
arguments: label: D40
type_guessed: string
name: read_data
arguments: label: D14
type_guessed: string
name: read_data
arguments: label: D18
type_guessed: string
name: read_data
arguments: label: D24
type_guessed: f64
name: read_data
arguments: label: D45
type_guessed: byte[8]
name: read_data
arguments: label: D39
type_guessed: string
name: read_data
arguments: label: D68
type_guessed: string

tool: D36: L: %i


tool: D58: n: %i


tool: D40: d: %i


tool: D14: N: %i


tool: D18: dt: %f


tool: D24: 0.5

tool: {"D45": [0x00,0x00,0x00,0x00,0x00,0x00,0xf0,0x3f]}

tool: D39: %5.3f(%i, %i), %5.6f %5.6f %5.6f 


tool: D68:  %10.3f

assistant: ```c
void fe_SigmaB2_at(double *S, double *y, int N, double dt, int L) {
  int n = 1 << (L - 1);
  int K = 1;
  int d = 2 * n - 1 + K;
  int t;
  int i, j;
  double yn;
  printf("L: %i\n", L);
  printf("n: %i\n", n);
  printf("d: %i\n", d);
  printf("N: %i\n", N);
  printf("dt: %f\n", dt);
  double a, b, c;
  for (t = 0; t < N; t++) {
    yn = y[t] * (double)n;
    i = maxi(mini(((int)ceil(yn)), n), 1);
    j = maxi(mini(((int)ceil(yn - 0.5)), n - 1), 1);
    a = sq(hat(yn - i + 1)) * dt;
    b = sq(hat(yn - j + 0.5)) * dt;
    c = hat(yn - i + 1) * hat(yn - j + 0.5) * dt;
    if (t < 10)
      printf("%5.3f(%i, %i), %5.6f %5.6f %5.6f \n", yn, i, j, a, b, c);
    S[(2 * i - 2) * d + 2 * i - 2] += a;
    S[(2 * j - 1) * d + 2 * j - 1] += b;
    S[(2 * i - 2) * d + 2 * j - 1] = S[(2 * j - 1) * d + 2 * i - 2] += c;
    S[(d - 1) * d + 2 * j - 1] = S[(2 * j - 1) * d + d - 1] += hat(yn - j + 0.5) * dt;
    S[(d - 1) * d + 2 * i - 2] = S[(2 * i - 2) * d + d - 1] += hat(yn - i + 1) * dt;
  }
  S[d * d - 1] = N * dt;
  for (i = 0; i < d * d; i++) {
    printf(" %10.3f", S[i]);
    if (i % d == d - 1)
      printf("\n");
  }
  printf("\n");
}
```