user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<smoother>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x28,%rsp
  mov    %rdi,0x8(%rsp)
  mov    %rsi,%r15
  mov    %rdx,0x10(%rsp)
  mov    %rcx,%r14
  mov    %r8d,%ebx
  mov    %r9,0x18(%rsp)
  mov    %r8d,%esi
  mov    %r8d,%edi
  call   <mat@plt>
  mov    %rax,%rbp
  mov    %ebx,%esi
  mov    %ebx,%edi
  call   <mat@plt>
  mov    %rax,%r12
  mov    $0x1,%esi
  mov    %ebx,%edi
  call   <mat@plt>
  mov    %rax,%r13
  test   %rbp,%rbp
  sete   %al
  test   %r12,%r12
  sete   %dl
  or     %dl,%al
  jne    L65
  test   %r13,%r13
  je     L65
  mov    %ebx,%ecx
  mov    %ebx,%edx
  mov    %r15,%rsi
  mov    %rbp,%rdi
  call   <matcpy@plt>
  mov    %ebx,%ecx
  mov    %ebx,%edx
  mov    %r14,%rsi
  mov    %r12,%rdi
  call   <matcpy@plt>
  mov    %ebx,%esi
  mov    %rbp,%rdi
  call   <matinv@plt>
  mov    $0xffffffff,%r14d
  test   %eax,%eax
  je     L50
L0:
  mov    %rbp,%rdi
  call   <free@plt>
  mov    %r12,%rdi
  call   <free@plt>
  mov    %r13,%rdi
  call   <free@plt>
L53:
  mov    %r14d,%eax
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L50:
  mov    %ebx,%esi
  mov    %r12,%rdi
  call   <matinv@plt>
  test   %eax,%eax
  jne    L0
  mov    %ebx,%edx
  imul   %ebx,%edx
  test   %edx,%edx
  jle    L10
  mov    %edx,%edx
  mov    $0x0,%eax
L34:
  movsd  0x0(%rbp,%rax,8),%xmm0
  addsd  (%r12,%rax,8),%xmm0
  mov    0x60(%rsp),%rcx
  movsd  %xmm0,(%rcx,%rax,8)
  add    $0x1,%rax
  cmp    %rdx,%rax
  jne    L34
L10:
  mov    %ebx,%esi
  mov    0x60(%rsp),%rdi
  call   <matinv@plt>
  mov    %eax,%r14d
  test   %eax,%eax
  jne    L0
  sub    $0x8,%rsp
  push   %r13
  pxor   %xmm1,%xmm1
  mov    0x18(%rsp),%r9
  mov    %rbp,%r8
  mov    D14(%rip),%rax
  movq   %rax,%xmm0
  mov    %ebx,%ecx
  mov    $0x1,%edx
  mov    %ebx,%esi
  lea    D30(%rip),%r15
  mov    %r15,%rdi
  call   <matmul@plt>
  mov    %r13,(%rsp)
  mov    D14(%rip),%rax
  movq   %rax,%xmm1
  mov    0x20(%rsp),%r9
  mov    %r12,%r8
  movq   %rax,%xmm0
  mov    %ebx,%ecx
  mov    $0x1,%edx
  mov    %ebx,%esi
  mov    %r15,%rdi
  call   <matmul@plt>
  add    $0x8,%rsp
  push   0x20(%rsp)
  pxor   %xmm1,%xmm1
  mov    %r13,%r9
  mov    0x70(%rsp),%r8
  mov    D14(%rip),%rax
  movq   %rax,%xmm0
  mov    %ebx,%ecx
  mov    $0x1,%edx
  mov    %ebx,%esi
  mov    %r15,%rdi
  call   <matmul@plt>
  add    $0x10,%rsp
  jmp    L0
L65:
  mov    $0xffffffff,%r14d
  jmp    L53
```

tool_calls: name: read_data
arguments: tag: D14
type_guessed: f64
name: read_data
arguments: tag: D30
type_guessed: string

tool: D14: 1

tool: D30: NN

assistant: ```c
extern int smoother(const double *xf, const double *Qf, const double *xb, const double *Qb, int n, double *xs, double *Qs) {
  double *invQf = mat(n, n), *invQb = mat(n, n), *xx = mat(n, 1);
  int i, info = -1;
  if (!invQf || !invQb || !xx) {
    return info;
  }
  matcpy(invQf, Qf, n, n);
  matcpy(invQb, Qb, n, n);
  if (!matinv(invQf, n) && !matinv(invQb, n)) {
    for (i = 0; i < n * n; ++i) {
      Qs[i] = invQf[i] + invQb[i];
    }
    if (!(info = matinv(Qs, n))) {
      matmul("NN", n, 1, n, 1.0, invQf, xf, 0.0, xx);
      matmul("NN", n, 1, n, 1.0, invQb, xb, 1.0, xx);
      matmul("NN", n, 1, n, 1.0, Qs, xx, 0.0, xs);
    }
  }
  free(invQf);
  free(invQb);
  free(xx);
  return info;
}
```