user: 请将这段汇编代码片段转换成等效的C代码:

```asm
<kernel_dtrmv_u_n_8_lib4>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %edi,-0x74(%rbp)
  mov    %rsi,-0x80(%rbp)
  mov    %edx,-0x78(%rbp)
  mov    %rcx,-0x88(%rbp)
  mov    %r8,-0x90(%rbp)
  mov    %r9d,-0x94(%rbp)
  cmpl   $0x0,-0x74(%rbp)
  jle    L29
  mov    -0x78(%rbp),%eax
  shl    $0x2,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x68(%rbp)
  movl   $0x4,-0x6c(%rbp)
  pxor   %xmm0,%xmm0
  movsd  %xmm0,-0x60(%rbp)
  pxor   %xmm0,%xmm0
  movsd  %xmm0,-0x58(%rbp)
  pxor   %xmm0,%xmm0
  movsd  %xmm0,-0x50(%rbp)
  pxor   %xmm0,%xmm0
  movsd  %xmm0,-0x48(%rbp)
  pxor   %xmm0,%xmm0
  movsd  %xmm0,-0x40(%rbp)
  pxor   %xmm0,%xmm0
  movsd  %xmm0,-0x38(%rbp)
  pxor   %xmm0,%xmm0
  movsd  %xmm0,-0x30(%rbp)
  pxor   %xmm0,%xmm0
  movsd  %xmm0,-0x28(%rbp)
  mov    -0x88(%rbp),%rax
  movsd  (%rax),%xmm0
  movsd  %xmm0,-0x20(%rbp)
  mov    -0x88(%rbp),%rax
  movsd  0x8(%rax),%xmm0
  movsd  %xmm0,-0x18(%rbp)
  mov    -0x88(%rbp),%rax
  movsd  0x10(%rax),%xmm0
  movsd  %xmm0,-0x10(%rbp)
  mov    -0x88(%rbp),%rax
  movsd  0x18(%rax),%xmm0
  movsd  %xmm0,-0x8(%rbp)
  mov    -0x80(%rbp),%rax
  movsd  (%rax),%xmm0
  mulsd  -0x20(%rbp),%xmm0
  movsd  -0x60(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x60(%rbp)
  mov    -0x6c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x18(%rbp),%xmm0
  movsd  -0x60(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x60(%rbp)
  mov    -0x6c(%rbp),%eax
  add    $0x1,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x18(%rbp),%xmm0
  movsd  -0x58(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x58(%rbp)
  mov    -0x6c(%rbp),%eax
  add    %eax,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x10(%rbp),%xmm0
  movsd  -0x60(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x60(%rbp)
  mov    -0x6c(%rbp),%eax
  add    %eax,%eax
  add    $0x1,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x10(%rbp),%xmm0
  movsd  -0x58(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x58(%rbp)
  mov    -0x6c(%rbp),%eax
  add    $0x1,%eax
  add    %eax,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x10(%rbp),%xmm0
  movsd  -0x50(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x50(%rbp)
  mov    -0x6c(%rbp),%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x8(%rbp),%xmm0
  movsd  -0x60(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x60(%rbp)
  mov    -0x6c(%rbp),%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  add    $0x1,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x8(%rbp),%xmm0
  movsd  -0x58(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x58(%rbp)
  mov    -0x6c(%rbp),%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  add    $0x2,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x8(%rbp),%xmm0
  movsd  -0x50(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x50(%rbp)
  mov    -0x6c(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x8(%rbp),%xmm0
  movsd  -0x48(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x48(%rbp)
  mov    -0x6c(%rbp),%eax
  shl    $0x2,%eax
  cltq
  shl    $0x3,%rax
  add    %rax,-0x80(%rbp)
  mov    -0x6c(%rbp),%eax
  shl    $0x2,%eax
  cltq
  shl    $0x3,%rax
  add    %rax,-0x68(%rbp)
  addq   $0x20,-0x88(%rbp)
  mov    -0x88(%rbp),%rax
  movsd  (%rax),%xmm0
  movsd  %xmm0,-0x20(%rbp)
  mov    -0x88(%rbp),%rax
  movsd  0x8(%rax),%xmm0
  movsd  %xmm0,-0x18(%rbp)
  mov    -0x88(%rbp),%rax
  movsd  0x10(%rax),%xmm0
  movsd  %xmm0,-0x10(%rbp)
  mov    -0x88(%rbp),%rax
  movsd  0x18(%rax),%xmm0
  movsd  %xmm0,-0x8(%rbp)
  mov    -0x80(%rbp),%rax
  movsd  (%rax),%xmm0
  mulsd  -0x20(%rbp),%xmm0
  movsd  -0x60(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x60(%rbp)
  mov    -0x80(%rbp),%rax
  add    $0x8,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x20(%rbp),%xmm0
  movsd  -0x58(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x58(%rbp)
  mov    -0x80(%rbp),%rax
  add    $0x10,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x20(%rbp),%xmm0
  movsd  -0x50(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x50(%rbp)
  mov    -0x80(%rbp),%rax
  add    $0x18,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x20(%rbp),%xmm0
  movsd  -0x48(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x48(%rbp)
  mov    -0x68(%rbp),%rax
  movsd  (%rax),%xmm0
  mulsd  -0x20(%rbp),%xmm0
  movsd  -0x40(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x40(%rbp)
  mov    -0x6c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x18(%rbp),%xmm0
  movsd  -0x60(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x60(%rbp)
  mov    -0x6c(%rbp),%eax
  add    $0x1,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x18(%rbp),%xmm0
  movsd  -0x58(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x58(%rbp)
  mov    -0x6c(%rbp),%eax
  add    $0x2,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x18(%rbp),%xmm0
  movsd  -0x50(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x50(%rbp)
  mov    -0x6c(%rbp),%eax
  add    $0x3,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x18(%rbp),%xmm0
  movsd  -0x48(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x48(%rbp)
  mov    -0x6c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x18(%rbp),%xmm0
  movsd  -0x40(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x40(%rbp)
  mov    -0x6c(%rbp),%eax
  add    $0x1,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x18(%rbp),%xmm0
  movsd  -0x38(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x38(%rbp)
  mov    -0x6c(%rbp),%eax
  add    %eax,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x10(%rbp),%xmm0
  movsd  -0x60(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x60(%rbp)
  mov    -0x6c(%rbp),%eax
  add    %eax,%eax
  add    $0x1,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x10(%rbp),%xmm0
  movsd  -0x58(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x58(%rbp)
  mov    -0x6c(%rbp),%eax
  add    $0x1,%eax
  add    %eax,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x10(%rbp),%xmm0
  movsd  -0x50(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x50(%rbp)
  mov    -0x6c(%rbp),%eax
  add    %eax,%eax
  add    $0x3,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x10(%rbp),%xmm0
  movsd  -0x48(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x48(%rbp)
  mov    -0x6c(%rbp),%eax
  add    %eax,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x10(%rbp),%xmm0
  movsd  -0x40(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x40(%rbp)
  mov    -0x6c(%rbp),%eax
  add    %eax,%eax
  add    $0x1,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x10(%rbp),%xmm0
  movsd  -0x38(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x38(%rbp)
  mov    -0x6c(%rbp),%eax
  add    $0x1,%eax
  add    %eax,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x10(%rbp),%xmm0
  movsd  -0x30(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x30(%rbp)
  mov    -0x6c(%rbp),%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x8(%rbp),%xmm0
  movsd  -0x60(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x60(%rbp)
  mov    -0x6c(%rbp),%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  add    $0x1,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x8(%rbp),%xmm0
  movsd  -0x58(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x58(%rbp)
  mov    -0x6c(%rbp),%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  add    $0x2,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x8(%rbp),%xmm0
  movsd  -0x50(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x50(%rbp)
  mov    -0x6c(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x8(%rbp),%xmm0
  movsd  -0x48(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x48(%rbp)
  mov    -0x6c(%rbp),%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x8(%rbp),%xmm0
  movsd  -0x40(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x40(%rbp)
  mov    -0x6c(%rbp),%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  add    $0x1,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x8(%rbp),%xmm0
  movsd  -0x38(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x38(%rbp)
  mov    -0x6c(%rbp),%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  add    $0x2,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x8(%rbp),%xmm0
  movsd  -0x30(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x30(%rbp)
  mov    -0x6c(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x8(%rbp),%xmm0
  movsd  -0x28(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x28(%rbp)
  mov    -0x6c(%rbp),%eax
  shl    $0x2,%eax
  cltq
  shl    $0x3,%rax
  add    %rax,-0x80(%rbp)
  mov    -0x6c(%rbp),%eax
  shl    $0x2,%eax
  cltq
  shl    $0x3,%rax
  add    %rax,-0x68(%rbp)
  addq   $0x20,-0x88(%rbp)
  movl   $0x8,-0x70(%rbp)
  jmp    L53
L4:
  mov    -0x88(%rbp),%rax
  movsd  (%rax),%xmm0
  movsd  %xmm0,-0x20(%rbp)
  mov    -0x88(%rbp),%rax
  movsd  0x8(%rax),%xmm0
  movsd  %xmm0,-0x18(%rbp)
  mov    -0x88(%rbp),%rax
  movsd  0x10(%rax),%xmm0
  movsd  %xmm0,-0x10(%rbp)
  mov    -0x88(%rbp),%rax
  movsd  0x18(%rax),%xmm0
  movsd  %xmm0,-0x8(%rbp)
  mov    -0x80(%rbp),%rax
  movsd  (%rax),%xmm0
  mulsd  -0x20(%rbp),%xmm0
  movsd  -0x60(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x60(%rbp)
  mov    -0x80(%rbp),%rax
  add    $0x8,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x20(%rbp),%xmm0
  movsd  -0x58(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x58(%rbp)
  mov    -0x80(%rbp),%rax
  add    $0x10,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x20(%rbp),%xmm0
  movsd  -0x50(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x50(%rbp)
  mov    -0x80(%rbp),%rax
  add    $0x18,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x20(%rbp),%xmm0
  movsd  -0x48(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x48(%rbp)
  mov    -0x68(%rbp),%rax
  movsd  (%rax),%xmm0
  mulsd  -0x20(%rbp),%xmm0
  movsd  -0x40(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x40(%rbp)
  mov    -0x68(%rbp),%rax
  add    $0x8,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x20(%rbp),%xmm0
  movsd  -0x38(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x38(%rbp)
  mov    -0x68(%rbp),%rax
  add    $0x10,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x20(%rbp),%xmm0
  movsd  -0x30(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x30(%rbp)
  mov    -0x68(%rbp),%rax
  add    $0x18,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x20(%rbp),%xmm0
  movsd  -0x28(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x28(%rbp)
  mov    -0x6c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x18(%rbp),%xmm0
  movsd  -0x60(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x60(%rbp)
  mov    -0x6c(%rbp),%eax
  add    $0x1,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x18(%rbp),%xmm0
  movsd  -0x58(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x58(%rbp)
  mov    -0x6c(%rbp),%eax
  add    $0x2,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x18(%rbp),%xmm0
  movsd  -0x50(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x50(%rbp)
  mov    -0x6c(%rbp),%eax
  add    $0x3,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x18(%rbp),%xmm0
  movsd  -0x48(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x48(%rbp)
  mov    -0x6c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x18(%rbp),%xmm0
  movsd  -0x40(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x40(%rbp)
  mov    -0x6c(%rbp),%eax
  add    $0x1,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x18(%rbp),%xmm0
  movsd  -0x38(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x38(%rbp)
  mov    -0x6c(%rbp),%eax
  add    $0x2,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x18(%rbp),%xmm0
  movsd  -0x30(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x30(%rbp)
  mov    -0x6c(%rbp),%eax
  add    $0x3,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x18(%rbp),%xmm0
  movsd  -0x28(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x28(%rbp)
  mov    -0x6c(%rbp),%eax
  add    %eax,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x10(%rbp),%xmm0
  movsd  -0x60(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x60(%rbp)
  mov    -0x6c(%rbp),%eax
  add    %eax,%eax
  add    $0x1,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x10(%rbp),%xmm0
  movsd  -0x58(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x58(%rbp)
  mov    -0x6c(%rbp),%eax
  add    $0x1,%eax
  add    %eax,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x10(%rbp),%xmm0
  movsd  -0x50(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x50(%rbp)
  mov    -0x6c(%rbp),%eax
  add    %eax,%eax
  add    $0x3,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x10(%rbp),%xmm0
  movsd  -0x48(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x48(%rbp)
  mov    -0x6c(%rbp),%eax
  add    %eax,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x10(%rbp),%xmm0
  movsd  -0x40(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x40(%rbp)
  mov    -0x6c(%rbp),%eax
  add    %eax,%eax
  add    $0x1,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x10(%rbp),%xmm0
  movsd  -0x38(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x38(%rbp)
  mov    -0x6c(%rbp),%eax
  add    $0x1,%eax
  add    %eax,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x10(%rbp),%xmm0
  movsd  -0x30(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x30(%rbp)
  mov    -0x6c(%rbp),%eax
  add    %eax,%eax
  add    $0x3,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x10(%rbp),%xmm0
  movsd  -0x28(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x28(%rbp)
  mov    -0x6c(%rbp),%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x8(%rbp),%xmm0
  movsd  -0x60(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x60(%rbp)
  mov    -0x6c(%rbp),%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  add    $0x1,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x8(%rbp),%xmm0
  movsd  -0x58(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x58(%rbp)
  mov    -0x6c(%rbp),%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  add    $0x2,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x8(%rbp),%xmm0
  movsd  -0x50(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x50(%rbp)
  mov    -0x6c(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x8(%rbp),%xmm0
  movsd  -0x48(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x48(%rbp)
  mov    -0x6c(%rbp),%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x8(%rbp),%xmm0
  movsd  -0x40(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x40(%rbp)
  mov    -0x6c(%rbp),%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  add    $0x1,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x8(%rbp),%xmm0
  movsd  -0x38(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x38(%rbp)
  mov    -0x6c(%rbp),%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  add    $0x2,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x8(%rbp),%xmm0
  movsd  -0x30(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x30(%rbp)
  mov    -0x6c(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x8(%rbp),%xmm0
  movsd  -0x28(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x28(%rbp)
  mov    -0x6c(%rbp),%eax
  shl    $0x2,%eax
  cltq
  shl    $0x3,%rax
  add    %rax,-0x80(%rbp)
  mov    -0x6c(%rbp),%eax
  shl    $0x2,%eax
  cltq
  shl    $0x3,%rax
  add    %rax,-0x68(%rbp)
  addq   $0x20,-0x88(%rbp)
  addl   $0x4,-0x70(%rbp)
L53:
  mov    -0x74(%rbp),%eax
  sub    $0x3,%eax
  cmp    %eax,-0x70(%rbp)
  jl     L4
  jmp    L12
L3:
  mov    -0x88(%rbp),%rax
  movsd  (%rax),%xmm0
  movsd  %xmm0,-0x20(%rbp)
  mov    -0x80(%rbp),%rax
  movsd  (%rax),%xmm0
  mulsd  -0x20(%rbp),%xmm0
  movsd  -0x60(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x60(%rbp)
  mov    -0x80(%rbp),%rax
  add    $0x8,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x20(%rbp),%xmm0
  movsd  -0x58(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x58(%rbp)
  mov    -0x80(%rbp),%rax
  add    $0x10,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x20(%rbp),%xmm0
  movsd  -0x50(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x50(%rbp)
  mov    -0x80(%rbp),%rax
  add    $0x18,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x20(%rbp),%xmm0
  movsd  -0x48(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x48(%rbp)
  mov    -0x68(%rbp),%rax
  movsd  (%rax),%xmm0
  mulsd  -0x20(%rbp),%xmm0
  movsd  -0x40(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x40(%rbp)
  mov    -0x68(%rbp),%rax
  add    $0x8,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x20(%rbp),%xmm0
  movsd  -0x38(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x38(%rbp)
  mov    -0x68(%rbp),%rax
  add    $0x10,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x20(%rbp),%xmm0
  movsd  -0x30(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x30(%rbp)
  mov    -0x68(%rbp),%rax
  add    $0x18,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x20(%rbp),%xmm0
  movsd  -0x28(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x28(%rbp)
  mov    -0x6c(%rbp),%eax
  cltq
  shl    $0x3,%rax
  add    %rax,-0x80(%rbp)
  mov    -0x6c(%rbp),%eax
  cltq
  shl    $0x3,%rax
  add    %rax,-0x68(%rbp)
  addq   $0x8,-0x88(%rbp)
  addl   $0x1,-0x70(%rbp)
L12:
  mov    -0x70(%rbp),%eax
  cmp    -0x74(%rbp),%eax
  jl     L3
  cmpl   $0x0,-0x94(%rbp)
  jne    L88
  mov    -0x90(%rbp),%rax
  movsd  -0x60(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x90(%rbp),%rax
  add    $0x8,%rax
  movsd  -0x58(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x90(%rbp),%rax
  add    $0x10,%rax
  movsd  -0x50(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x90(%rbp),%rax
  add    $0x18,%rax
  movsd  -0x48(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x90(%rbp),%rax
  add    $0x20,%rax
  movsd  -0x40(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x90(%rbp),%rax
  add    $0x28,%rax
  movsd  -0x38(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x90(%rbp),%rax
  add    $0x30,%rax
  movsd  -0x30(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x90(%rbp),%rax
  add    $0x38,%rax
  movsd  -0x28(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  jmp    L47
L88:
  cmpl   $0x1,-0x94(%rbp)
  jne    L82
  mov    -0x90(%rbp),%rax
  movsd  (%rax),%xmm0
  addsd  -0x60(%rbp),%xmm0
  mov    -0x90(%rbp),%rax
  movsd  %xmm0,(%rax)
  mov    -0x90(%rbp),%rax
  add    $0x8,%rax
  movsd  (%rax),%xmm0
  mov    -0x90(%rbp),%rax
  add    $0x8,%rax
  addsd  -0x58(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x90(%rbp),%rax
  add    $0x10,%rax
  movsd  (%rax),%xmm0
  mov    -0x90(%rbp),%rax
  add    $0x10,%rax
  addsd  -0x50(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x90(%rbp),%rax
  add    $0x18,%rax
  movsd  (%rax),%xmm0
  mov    -0x90(%rbp),%rax
  add    $0x18,%rax
  addsd  -0x48(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x90(%rbp),%rax
  add    $0x20,%rax
  movsd  (%rax),%xmm0
  mov    -0x90(%rbp),%rax
  add    $0x20,%rax
  addsd  -0x40(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x90(%rbp),%rax
  add    $0x28,%rax
  movsd  (%rax),%xmm0
  mov    -0x90(%rbp),%rax
  add    $0x28,%rax
  addsd  -0x38(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x90(%rbp),%rax
  add    $0x30,%rax
  movsd  (%rax),%xmm0
  mov    -0x90(%rbp),%rax
  add    $0x30,%rax
  addsd  -0x30(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x90(%rbp),%rax
  add    $0x38,%rax
  movsd  (%rax),%xmm0
  mov    -0x90(%rbp),%rax
  add    $0x38,%rax
  addsd  -0x28(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  jmp    L47
L82:
  mov    -0x90(%rbp),%rax
  movsd  (%rax),%xmm0
  subsd  -0x60(%rbp),%xmm0
  mov    -0x90(%rbp),%rax
  movsd  %xmm0,(%rax)
  mov    -0x90(%rbp),%rax
  add    $0x8,%rax
  movsd  (%rax),%xmm0
  mov    -0x90(%rbp),%rax
  add    $0x8,%rax
  subsd  -0x58(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x90(%rbp),%rax
  add    $0x10,%rax
  movsd  (%rax),%xmm0
  mov    -0x90(%rbp),%rax
  add    $0x10,%rax
  subsd  -0x50(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x90(%rbp),%rax
  add    $0x18,%rax
  movsd  (%rax),%xmm0
  mov    -0x90(%rbp),%rax
  add    $0x18,%rax
  subsd  -0x48(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x90(%rbp),%rax
  add    $0x20,%rax
  movsd  (%rax),%xmm0
  mov    -0x90(%rbp),%rax
  add    $0x20,%rax
  subsd  -0x40(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x90(%rbp),%rax
  add    $0x28,%rax
  movsd  (%rax),%xmm0
  mov    -0x90(%rbp),%rax
  add    $0x28,%rax
  subsd  -0x38(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x90(%rbp),%rax
  add    $0x30,%rax
  movsd  (%rax),%xmm0
  mov    -0x90(%rbp),%rax
  add    $0x30,%rax
  subsd  -0x30(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x90(%rbp),%rax
  add    $0x38,%rax
  movsd  (%rax),%xmm0
  mov    -0x90(%rbp),%rax
  add    $0x38,%rax
  subsd  -0x28(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  jmp    L47
L29:
  nop
L47:
  leave
  ret
```

assistant: ```c
void kernel_dtrmv_u_n_8_lib4(int kmax, double *A0, int sda, double *x, double *y, int alg) {
  if (kmax <= 0)
    return;
  double *A1 = A0 + 4 * sda;
  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, y_4 = 0, y_5 = 0, y_6 = 0, y_7 = 0;
  x_0 = x[0];
  x_1 = x[1];
  x_2 = x[2];
  x_3 = x[3];
  y_0 += A0[0 + lda * 0] * x_0;
  y_0 += A0[0 + lda * 1] * x_1;
  y_1 += A0[1 + lda * 1] * x_1;
  y_0 += A0[0 + lda * 2] * x_2;
  y_1 += A0[1 + lda * 2] * x_2;
  y_2 += A0[2 + lda * 2] * x_2;
  y_0 += A0[0 + lda * 3] * x_3;
  y_1 += A0[1 + lda * 3] * x_3;
  y_2 += A0[2 + lda * 3] * x_3;
  y_3 += A0[3 + lda * 3] * x_3;
  A0 += 4 * lda;
  A1 += 4 * lda;
  x += 4;
  x_0 = x[0];
  x_1 = x[1];
  x_2 = x[2];
  x_3 = x[3];
  y_0 += A0[0 + lda * 0] * x_0;
  y_1 += A0[1 + lda * 0] * x_0;
  y_2 += A0[2 + lda * 0] * x_0;
  y_3 += A0[3 + lda * 0] * x_0;
  y_4 += A1[0 + lda * 0] * x_0;
  y_0 += A0[0 + lda * 1] * x_1;
  y_1 += A0[1 + lda * 1] * x_1;
  y_2 += A0[2 + lda * 1] * x_1;
  y_3 += A0[3 + lda * 1] * x_1;
  y_4 += A1[0 + lda * 1] * x_1;
  y_5 += A1[1 + lda * 1] * x_1;
  y_0 += A0[0 + lda * 2] * x_2;
  y_1 += A0[1 + lda * 2] * x_2;
  y_2 += A0[2 + lda * 2] * x_2;
  y_3 += A0[3 + lda * 2] * x_2;
  y_4 += A1[0 + lda * 2] * x_2;
  y_5 += A1[1 + lda * 2] * x_2;
  y_6 += A1[2 + lda * 2] * x_2;
  y_0 += A0[0 + lda * 3] * x_3;
  y_1 += A0[1 + lda * 3] * x_3;
  y_2 += A0[2 + lda * 3] * x_3;
  y_3 += A0[3 + lda * 3] * x_3;
  y_4 += A1[0 + lda * 3] * x_3;
  y_5 += A1[1 + lda * 3] * x_3;
  y_6 += A1[2 + lda * 3] * x_3;
  y_7 += A1[3 + lda * 3] * x_3;
  A0 += 4 * lda;
  A1 += 4 * lda;
  x += 4;
  k = 8;
  for (; k < kmax - 3; k += 4) {
    x_0 = x[0];
    x_1 = x[1];
    x_2 = x[2];
    x_3 = x[3];
    y_0 += A0[0 + lda * 0] * x_0;
    y_1 += A0[1 + lda * 0] * x_0;
    y_2 += A0[2 + lda * 0] * x_0;
    y_3 += A0[3 + lda * 0] * x_0;
    y_4 += A1[0 + lda * 0] * x_0;
    y_5 += A1[1 + lda * 0] * x_0;
    y_6 += A1[2 + lda * 0] * x_0;
    y_7 += A1[3 + lda * 0] * x_0;
    y_0 += A0[0 + lda * 1] * x_1;
    y_1 += A0[1 + lda * 1] * x_1;
    y_2 += A0[2 + lda * 1] * x_1;
    y_3 += A0[3 + lda * 1] * x_1;
    y_4 += A1[0 + lda * 1] * x_1;
    y_5 += A1[1 + lda * 1] * x_1;
    y_6 += A1[2 + lda * 1] * x_1;
    y_7 += A1[3 + lda * 1] * x_1;
    y_0 += A0[0 + lda * 2] * x_2;
    y_1 += A0[1 + lda * 2] * x_2;
    y_2 += A0[2 + lda * 2] * x_2;
    y_3 += A0[3 + lda * 2] * x_2;
    y_4 += A1[0 + lda * 2] * x_2;
    y_5 += A1[1 + lda * 2] * x_2;
    y_6 += A1[2 + lda * 2] * x_2;
    y_7 += A1[3 + lda * 2] * x_2;
    y_0 += A0[0 + lda * 3] * x_3;
    y_1 += A0[1 + lda * 3] * x_3;
    y_2 += A0[2 + lda * 3] * x_3;
    y_3 += A0[3 + lda * 3] * x_3;
    y_4 += A1[0 + lda * 3] * x_3;
    y_5 += A1[1 + lda * 3] * x_3;
    y_6 += A1[2 + lda * 3] * x_3;
    y_7 += A1[3 + lda * 3] * x_3;
    A0 += 4 * lda;
    A1 += 4 * lda;
    x += 4;
  }
  for (; k < kmax; k++) {
    x_0 = x[0];
    y_0 += A0[0 + lda * 0] * x_0;
    y_1 += A0[1 + lda * 0] * x_0;
    y_2 += A0[2 + lda * 0] * x_0;
    y_3 += A0[3 + lda * 0] * x_0;
    y_4 += A1[0 + lda * 0] * x_0;
    y_5 += A1[1 + lda * 0] * x_0;
    y_6 += A1[2 + lda * 0] * x_0;
    y_7 += A1[3 + lda * 0] * x_0;
    A0 += 1 * lda;
    A1 += 1 * lda;
    x += 1;
  }
  if (alg == 0) {
    y[0] = y_0;
    y[1] = y_1;
    y[2] = y_2;
    y[3] = y_3;
    y[4] = y_4;
    y[5] = y_5;
    y[6] = y_6;
    y[7] = y_7;
  } else if (alg == 1) {
    y[0] += y_0;
    y[1] += y_1;
    y[2] += y_2;
    y[3] += y_3;
    y[4] += y_4;
    y[5] += y_5;
    y[6] += y_6;
    y[7] += y_7;
  } else {
    y[0] -= y_0;
    y[1] -= y_1;
    y[2] -= y_2;
    y[3] -= y_3;
    y[4] -= y_4;
    y[5] -= y_5;
    y[6] -= y_6;
    y[7] -= y_7;
  }
}
```