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

```asm
<sd_to_llr>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x60,%rsp
  mov    %rdi,-0x48(%rbp)
  mov    %rsi,-0x50(%rbp)
  mov    %edx,-0x54(%rbp)
  pxor   %xmm0,%xmm0
  movsd  %xmm0,-0x38(%rbp)
  movl   $0x0,-0x3c(%rbp)
  jmp    L74
L9:
  mov    -0x3c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x50(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  movq   %rax,%xmm0
  call   <fabs@plt>
  pxor   %xmm0,%xmm0
  cvtsi2sd %rax,%xmm0
  movsd  -0x38(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x38(%rbp)
  addl   $0x1,-0x3c(%rbp)
L74:
  mov    -0x3c(%rbp),%eax
  cmp    -0x54(%rbp),%eax
  jl     L9
  pxor   %xmm1,%xmm1
  cvtsi2sdl -0x54(%rbp),%xmm1
  movsd  -0x38(%rbp),%xmm0
  divsd  %xmm1,%xmm0
  movsd  %xmm0,-0x28(%rbp)
  movl   $0x0,-0x3c(%rbp)
  jmp    L77
L46:
  mov    -0x3c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x50(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mov    -0x3c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x50(%rbp),%rax
  add    %rdx,%rax
  divsd  -0x28(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  addl   $0x1,-0x3c(%rbp)
L77:
  mov    -0x3c(%rbp),%eax
  cmp    -0x54(%rbp),%eax
  jl     L46
  pxor   %xmm0,%xmm0
  movsd  %xmm0,-0x30(%rbp)
  movsd  -0x30(%rbp),%xmm0
  movsd  %xmm0,-0x38(%rbp)
  movl   $0x0,-0x3c(%rbp)
  jmp    L37
L28:
  mov    -0x3c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x50(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  pxor   %xmm1,%xmm1
  comisd %xmm1,%xmm0
  seta   %al
  movzbl %al,%eax
  mov    -0x3c(%rbp),%edx
  movslq %edx,%rdx
  lea    0x0(,%rdx,8),%rcx
  mov    -0x50(%rbp),%rdx
  add    %rcx,%rdx
  movsd  (%rdx),%xmm1
  pxor   %xmm0,%xmm0
  comisd %xmm1,%xmm0
  seta   %dl
  movzbl %dl,%edx
  sub    %edx,%eax
  pxor   %xmm0,%xmm0
  cvtsi2sd %eax,%xmm0
  movsd  %xmm0,-0x10(%rbp)
  mov    -0x3c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x50(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  subsd  -0x10(%rbp),%xmm0
  movsd  %xmm0,-0x8(%rbp)
  movsd  -0x38(%rbp),%xmm0
  addsd  -0x8(%rbp),%xmm0
  movsd  %xmm0,-0x38(%rbp)
  movsd  -0x8(%rbp),%xmm0
  mulsd  %xmm0,%xmm0
  movsd  -0x30(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x30(%rbp)
  addl   $0x1,-0x3c(%rbp)
L37:
  mov    -0x3c(%rbp),%eax
  cmp    -0x54(%rbp),%eax
  jl     L28
  pxor   %xmm1,%xmm1
  cvtsi2sdl -0x54(%rbp),%xmm1
  movsd  -0x38(%rbp),%xmm0
  divsd  %xmm1,%xmm0
  movsd  %xmm0,-0x28(%rbp)
  pxor   %xmm2,%xmm2
  cvtsi2sdl -0x54(%rbp),%xmm2
  movsd  -0x30(%rbp),%xmm0
  movapd %xmm0,%xmm1
  divsd  %xmm2,%xmm1
  movsd  -0x28(%rbp),%xmm0
  movapd %xmm0,%xmm2
  mulsd  %xmm0,%xmm2
  subsd  %xmm2,%xmm1
  movapd %xmm1,%xmm0
  movsd  %xmm0,-0x20(%rbp)
  movsd  -0x20(%rbp),%xmm0
  movapd %xmm0,%xmm1
  addsd  %xmm0,%xmm1
  movsd  D21(%rip),%xmm0
  addsd  %xmm0,%xmm1
  movsd  D17(%rip),%xmm0
  divsd  %xmm1,%xmm0
  movsd  %xmm0,-0x18(%rbp)
  movl   $0x0,-0x3c(%rbp)
  jmp    L39
L40:
  movsd  -0x18(%rbp),%xmm1
  movsd  D24(%rip),%xmm0
  mulsd  %xmm0,%xmm1
  mov    -0x3c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x50(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mov    -0x3c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x48(%rbp),%rax
  add    %rdx,%rax
  mulsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
  addl   $0x1,-0x3c(%rbp)
L39:
  mov    -0x3c(%rbp),%eax
  cmp    -0x54(%rbp),%eax
  jl     L40
  nop
  nop
  leave
  ret
```

tool_calls: name: disassemble_data
arguments: tag: D21
type: byte[8]
name: disassemble_data
arguments: tag: D17
type: f64
name: disassemble_data
arguments: tag: D24
type: f64

tool: {"D21": [0xfc,0xa9,0xf1,0xd2,0x4d,0x62,0x50,0x3f]}

tool: D17: 1

tool: D24: 4

assistant: ```c
void sd_to_llr(double llr[], double sd[], int n) {
  double sum, mean, sign, sumsq, estvar, estEsN0, x;
  int i;
  sum = 0.0;
  for (i = 0; i < n; i++)
    sum += fabs(sd[i]);
  mean = sum / n;
  for (i = 0; i < n; i++) {
    sd[i] /= mean;
  }
  sum = sumsq = 0.0;
  for (i = 0; i < n; i++) {
    sign = (sd[i] > 0.0) - (sd[i] < 0.0);
    x = (sd[i] - sign);
    sum += x;
    sumsq += x * x;
  }
  mean = sum / n;
  estvar = sumsq / n - mean * mean;
  estEsN0 = 1.0 / (2.0 * estvar + 1E-3);
  for (i = 0; i < n; i++)
    llr[i] = 4.0 * estEsN0 * sd[i];
}
```