user: 请将以下的汇编代码转换成C语言代码:

```asm
<kernel_dtrsv_n_4_lib4>:
  endbr64
  cmp    $0x3,%edi
  jle    L7
  lea    -0x4(%rdi),%eax
  shr    $0x2,%eax
  add    $0x1,%eax
  mov    %eax,%eax
  shl    $0x7,%rax
  add    %rdx,%rax
  pxor   %xmm8,%xmm8
  movapd %xmm8,%xmm4
  movapd %xmm8,%xmm5
  movapd %xmm8,%xmm6
L0:
  movsd  (%rcx),%xmm2
  movsd  0x8(%rcx),%xmm1
  movsd  0x10(%rcx),%xmm0
  movsd  0x18(%rcx),%xmm3
  movapd %xmm2,%xmm7
  mulsd  (%rdx),%xmm7
  addsd  %xmm6,%xmm7
  movapd %xmm2,%xmm6
  mulsd  0x8(%rdx),%xmm6
  addsd  %xmm5,%xmm6
  movapd %xmm2,%xmm5
  mulsd  0x10(%rdx),%xmm5
  addsd  %xmm4,%xmm5
  mulsd  0x18(%rdx),%xmm2
  addsd  %xmm8,%xmm2
  movapd %xmm1,%xmm4
  mulsd  0x20(%rdx),%xmm4
  addsd  %xmm7,%xmm4
  movapd %xmm1,%xmm7
  mulsd  0x28(%rdx),%xmm7
  addsd  %xmm6,%xmm7
  movapd %xmm1,%xmm6
  mulsd  0x30(%rdx),%xmm6
  addsd  %xmm5,%xmm6
  mulsd  0x38(%rdx),%xmm1
  addsd  %xmm2,%xmm1
  movapd %xmm0,%xmm5
  mulsd  0x40(%rdx),%xmm5
  addsd  %xmm4,%xmm5
  movapd %xmm0,%xmm4
  mulsd  0x48(%rdx),%xmm4
  addsd  %xmm7,%xmm4
  movapd %xmm0,%xmm2
  mulsd  0x50(%rdx),%xmm2
  addsd  %xmm6,%xmm2
  mulsd  0x58(%rdx),%xmm0
  addsd  %xmm1,%xmm0
  movapd %xmm3,%xmm6
  mulsd  0x60(%rdx),%xmm6
  addsd  %xmm5,%xmm6
  movapd %xmm3,%xmm5
  mulsd  0x68(%rdx),%xmm5
  addsd  %xmm4,%xmm5
  movapd %xmm3,%xmm4
  mulsd  0x70(%rdx),%xmm4
  addsd  %xmm2,%xmm4
  mulsd  0x78(%rdx),%xmm3
  addsd  %xmm0,%xmm3
  movapd %xmm3,%xmm8
  sub    $0xffffffffffffff80,%rdx
  add    $0x20,%rcx
  cmp    %rax,%rdx
  jne    L0
L42:
  movsd  (%r8),%xmm3
  subsd  %xmm6,%xmm3
  movapd %xmm3,%xmm7
  movsd  0x8(%r8),%xmm0
  subsd  %xmm5,%xmm0
  movapd %xmm0,%xmm2
  movsd  0x10(%r8),%xmm0
  movapd %xmm0,%xmm1
  subsd  %xmm4,%xmm1
  movsd  0x18(%r8),%xmm0
  subsd  %xmm8,%xmm0
  test   %esi,%esi
  je     L27
  movsd  0x8(%rax),%xmm6
  movsd  0x10(%rax),%xmm5
  movsd  0x18(%rax),%xmm4
  mulsd  (%rax),%xmm3
  movsd  %xmm3,(%r8)
  mulsd  %xmm3,%xmm6
  subsd  %xmm6,%xmm2
  mulsd  %xmm3,%xmm5
  subsd  %xmm5,%xmm1
  mulsd  %xmm4,%xmm3
  subsd  %xmm3,%xmm0
  movsd  0x30(%rax),%xmm4
  movsd  0x38(%rax),%xmm3
  mulsd  0x28(%rax),%xmm2
  movsd  %xmm2,0x8(%r8)
  mulsd  %xmm2,%xmm4
  subsd  %xmm4,%xmm1
  mulsd  %xmm3,%xmm2
  subsd  %xmm2,%xmm0
  movsd  0x58(%rax),%xmm2
  mulsd  0x50(%rax),%xmm1
  movsd  %xmm1,0x10(%r8)
  mulsd  %xmm2,%xmm1
  subsd  %xmm1,%xmm0
  mulsd  0x78(%rax),%xmm0
L36:
  movsd  %xmm0,0x18(%r8)
  ret
L7:
  mov    %rdx,%rax
  pxor   %xmm8,%xmm8
  movapd %xmm8,%xmm4
  movapd %xmm8,%xmm5
  movapd %xmm8,%xmm6
  jmp    L42
L27:
  movsd  0x8(%rax),%xmm8
  movsd  0x10(%rax),%xmm6
  movsd  0x18(%rax),%xmm5
  movsd  D3(%rip),%xmm4
  movapd %xmm4,%xmm3
  divsd  (%rax),%xmm3
  mulsd  %xmm7,%xmm3
  movsd  %xmm3,(%r8)
  movapd %xmm8,%xmm7
  mulsd  %xmm3,%xmm7
  subsd  %xmm7,%xmm2
  mulsd  %xmm3,%xmm6
  subsd  %xmm6,%xmm1
  mulsd  %xmm5,%xmm3
  subsd  %xmm3,%xmm0
  movsd  0x30(%rax),%xmm6
  movsd  0x38(%rax),%xmm5
  movapd %xmm4,%xmm3
  divsd  0x28(%rax),%xmm3
  mulsd  %xmm3,%xmm2
  movsd  %xmm2,0x8(%r8)
  movapd %xmm6,%xmm3
  mulsd  %xmm2,%xmm3
  subsd  %xmm3,%xmm1
  mulsd  %xmm5,%xmm2
  subsd  %xmm2,%xmm0
  movsd  0x58(%rax),%xmm3
  movapd %xmm4,%xmm2
  divsd  0x50(%rax),%xmm2
  mulsd  %xmm2,%xmm1
  movsd  %xmm1,0x10(%r8)
  mulsd  %xmm3,%xmm1
  subsd  %xmm1,%xmm0
  movapd %xmm4,%xmm1
  divsd  0x78(%rax),%xmm1
  mulsd  %xmm1,%xmm0
  jmp    L36
```

tool_calls: name: retrieve_data
arguments: label: D3
type: f64

tool: D3: 1

assistant: ```c
void kernel_dtrsv_n_4_lib4(int kmax, int inverted_diag, double *A, double *x, double *y) {
  const int lda = 4;
  int k;
  double x_0, x_1, x_2, x_3, y_0 = 0, y_1 = 0, y_2 = 0, y_3 = 0;
  k = 0;
  for (; k < kmax - 3; k += 4) {
    x_0 = x[0];
    x_1 = x[1];
    x_2 = x[2];
    x_3 = x[3];
    y_0 += A[0 + lda * 0] * x_0;
    y_1 += A[1 + lda * 0] * x_0;
    y_2 += A[2 + lda * 0] * x_0;
    y_3 += A[3 + lda * 0] * x_0;
    y_0 += A[0 + lda * 1] * x_1;
    y_1 += A[1 + lda * 1] * x_1;
    y_2 += A[2 + lda * 1] * x_1;
    y_3 += A[3 + lda * 1] * x_1;
    y_0 += A[0 + lda * 2] * x_2;
    y_1 += A[1 + lda * 2] * x_2;
    y_2 += A[2 + lda * 2] * x_2;
    y_3 += A[3 + lda * 2] * x_2;
    y_0 += A[0 + lda * 3] * x_3;
    y_1 += A[1 + lda * 3] * x_3;
    y_2 += A[2 + lda * 3] * x_3;
    y_3 += A[3 + lda * 3] * x_3;
    A += 4 * lda;
    x += 4;
  }
  y_0 = y[0] - y_0;
  y_1 = y[1] - y_1;
  y_2 = y[2] - y_2;
  y_3 = y[3] - y_3;
  double a_00, a_10, a_20, a_30, a_11, a_21, a_31;
  if (inverted_diag) {
    a_00 = A[0 + lda * 0];
    a_10 = A[1 + lda * 0];
    a_20 = A[2 + lda * 0];
    a_30 = A[3 + lda * 0];
    y_0 *= a_00;
    y[0] = y_0;
    y_1 -= a_10 * y_0;
    y_2 -= a_20 * y_0;
    y_3 -= a_30 * y_0;
    a_11 = A[1 + lda * 1];
    a_21 = A[2 + lda * 1];
    a_31 = A[3 + lda * 1];
    y_1 *= a_11;
    y[1] = y_1;
    y_2 -= a_21 * y_1;
    y_3 -= a_31 * y_1;
    a_00 = A[2 + lda * 2];
    a_10 = A[3 + lda * 2];
    y_2 *= a_00;
    y[2] = y_2;
    y_3 -= a_10 * y_2;
    a_11 = A[3 + lda * 3];
    y_3 *= a_11;
    y[3] = y_3;
  } else {
    a_00 = 1.0 / A[0 + lda * 0];
    a_10 = A[1 + lda * 0];
    a_20 = A[2 + lda * 0];
    a_30 = A[3 + lda * 0];
    y_0 *= a_00;
    y[0] = y_0;
    y_1 -= a_10 * y_0;
    y_2 -= a_20 * y_0;
    y_3 -= a_30 * y_0;
    a_11 = 1.0 / A[1 + lda * 1];
    a_21 = A[2 + lda * 1];
    a_31 = A[3 + lda * 1];
    y_1 *= a_11;
    y[1] = y_1;
    y_2 -= a_21 * y_1;
    y_3 -= a_31 * y_1;
    a_00 = 1.0 / A[2 + lda * 2];
    a_10 = A[3 + lda * 2];
    y_2 *= a_00;
    y[2] = y_2;
    y_3 -= a_10 * y_2;
    a_11 = 1.0 / A[3 + lda * 3];
    y_3 *= a_11;
    y[3] = y_3;
  }
}
```