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

```asm
<matexp>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %rbx
  sub    $0x58,%rsp
  mov    %rdi,-0x48(%rbp)
  mov    %rsi,-0x50(%rbp)
  movsd  %xmm0,-0x58(%rbp)
  mov    %edx,-0x5c(%rbp)
  mov    %ecx,-0x60(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x18(%rbp)
  xor    %eax,%eax
  cmpl   $0x1,-0x60(%rbp)
  jle    L76
  cmpl   $0x1f,-0x60(%rbp)
  jle    L39
L76:
  lea    D0(%rip),%rax
  mov    %rax,%rdi
  call   <error@plt>
L39:
  mov    -0x5c(%rbp),%eax
  imul   %eax,%eax
  mov    %eax,%edi
  call   <dvector@plt>
  mov    %rax,-0x30(%rbp)
  mov    -0x50(%rbp),%rax
  mov    %rax,-0x28(%rbp)
  movl   $0x0,-0x38(%rbp)
  jmp    L86
L71:
  movl   $0x0,-0x34(%rbp)
  jmp    L127
L92:
  mov    -0x60(%rbp),%eax
  neg    %eax
  mov    %eax,%edx
  mov    -0x38(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rcx
  mov    -0x48(%rbp),%rax
  add    %rcx,%rax
  mov    (%rax),%rcx
  mov    -0x34(%rbp),%eax
  cltq
  shl    $0x3,%rax
  add    %rcx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x58(%rbp),%xmm0
  movq   %xmm0,%rax
  mov    -0x30(%rbp),%rsi
  mov    -0x38(%rbp),%ecx
  mov    %ecx,%edi
  imul   -0x5c(%rbp),%edi
  mov    -0x34(%rbp),%ecx
  add    %edi,%ecx
  movslq %ecx,%rcx
  shl    $0x3,%rcx
  lea    (%rsi,%rcx,1),%rbx
  mov    %edx,%edi
  movq   %rax,%xmm0
  call   <ldexp@plt>
  movq   %xmm0,%rax
  mov    %rax,(%rbx)
  addl   $0x1,-0x34(%rbp)
L127:
  mov    -0x34(%rbp),%eax
  cmp    -0x5c(%rbp),%eax
  jl     L92
  addl   $0x1,-0x38(%rbp)
L86:
  mov    -0x38(%rbp),%eax
  cmp    -0x5c(%rbp),%eax
  jl     L71
  mov    -0x28(%rbp),%rdx
  mov    -0x30(%rbp),%rsi
  mov    -0x30(%rbp),%rax
  mov    -0x5c(%rbp),%r8d
  mov    -0x5c(%rbp),%edi
  mov    -0x5c(%rbp),%ecx
  mov    %r8d,%r9d
  mov    %edi,%r8d
  mov    %rax,%rdi
  call   <matby@plt>
  movl   $0x0,-0x38(%rbp)
  jmp    L24
L25:
  mov    -0x30(%rbp),%rdx
  mov    -0x38(%rbp),%eax
  cltq
  shl    $0x3,%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm1
  mov    -0x28(%rbp),%rdx
  mov    -0x38(%rbp),%eax
  cltq
  shl    $0x3,%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  movsd  D7(%rip),%xmm2
  divsd  %xmm2,%xmm0
  mov    -0x30(%rbp),%rdx
  mov    -0x38(%rbp),%eax
  cltq
  shl    $0x3,%rax
  add    %rdx,%rax
  addsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
  addl   $0x1,-0x38(%rbp)
L24:
  mov    -0x5c(%rbp),%eax
  imul   %eax,%eax
  cmp    %eax,-0x38(%rbp)
  jl     L25
  movl   $0x0,-0x38(%rbp)
  jmp    L50
L79:
  mov    -0x30(%rbp),%rdx
  mov    -0x38(%rbp),%eax
  imul   -0x5c(%rbp),%eax
  mov    %eax,%ecx
  mov    -0x38(%rbp),%eax
  add    %ecx,%eax
  cltq
  shl    $0x3,%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm1
  movsd  D6(%rip),%xmm0
  addsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
  addl   $0x1,-0x38(%rbp)
L50:
  mov    -0x38(%rbp),%eax
  cmp    -0x5c(%rbp),%eax
  jl     L79
  movl   $0x0,-0x38(%rbp)
  movl   $0x0,-0x3c(%rbp)
  jmp    L53
L123:
  cmpl   $0x0,-0x3c(%rbp)
  sete   %al
  movzbl %al,%eax
  mov    %eax,-0x3c(%rbp)
  mov    -0x3c(%rbp),%eax
  cltq
  mov    -0x30(%rbp,%rax,8),%rdx
  mov    $0x1,%eax
  sub    -0x3c(%rbp),%eax
  cltq
  mov    -0x30(%rbp,%rax,8),%rsi
  mov    $0x1,%eax
  sub    -0x3c(%rbp),%eax
  cltq
  mov    -0x30(%rbp,%rax,8),%rax
  mov    -0x5c(%rbp),%r8d
  mov    -0x5c(%rbp),%edi
  mov    -0x5c(%rbp),%ecx
  mov    %r8d,%r9d
  mov    %edi,%r8d
  mov    %rax,%rdi
  call   <matby@plt>
  addl   $0x1,-0x38(%rbp)
L53:
  mov    -0x38(%rbp),%eax
  cmp    -0x60(%rbp),%eax
  jl     L123
  cmpl   $0x0,-0x3c(%rbp)
  jne    L68
  mov    -0x5c(%rbp),%eax
  imul   %eax,%eax
  cltq
  shl    $0x3,%eax
  mov    %eax,%edx
  mov    -0x30(%rbp),%rcx
  mov    -0x50(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <memcpy@plt>
L68:
  mov    -0x30(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  mov    $0x0,%eax
  mov    -0x18(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L30
  call   <__stack_chk_fail@plt>
L30:
  mov    -0x8(%rbp),%rbx
  leave
  ret
```

tool_calls: name: parse_data
arguments: data_label: D0
type_guessed: string
name: parse_data
arguments: data_label: D7
type_guessed: byte[8]
name: parse_data
arguments: data_label: D6
type_guessed: byte[8]

tool: D0: TimeSquare not good

tool: {"D7": [0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x40]}

tool: {"D6": [0x00,0x00,0x00,0x00,0x00,0x00,0xf0,0x3f]}

assistant: ```c
int matexp(double **Q, double *P, double t, int n, int TimeSquare) {
  int it, i, j;
  double *T[2];
  if (TimeSquare < 2 || TimeSquare > 31)
    error("TimeSquare not good");
  T[0] = dvector(n * n);
  T[1] = P;
  for (i = 0; i < n; i++) {
    for (j = 0; j < n; j++) {
      T[0][i * n + j] = ldexp(Q[i][j] * t, -TimeSquare);
    }
  }
  matby(T[0], T[0], T[1], n, n, n);
  for (i = 0; i < n * n; i++) {
    T[0][i] += T[1][i] / 2;
  }
  for (i = 0; i < n; i++) {
    T[0][i * n + i]++;
  }
  for (i = 0, it = 0; i < TimeSquare; i++) {
    it = !it;
    matby(T[1 - it], T[1 - it], T[it], n, n, n);
  }
  if (it == 0) {
    memcpy(P, T[0], n * n * sizeof(double));
  }
  free(T[0]);
  return (0);
}
```