user: 这段汇编代码用C语言表示是什么样的?

```asm
<kernel_dgemm_nt_4x2_unpack_lib>:
  endbr64
  push   %r15
  mov    %rsi,%r11
  mov    %rcx,%r10
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %edi,%ebx
  mov    %edx,-0x18(%rsp)
  mov    %r8d,-0x1c(%rsp)
  mov    %r9,-0x10(%rsp)
  cmp    $0x3,%edi
  jle    L96
  mov    %edx,%eax
  lea    0x0(,%r8,4),%r12d
  lea    0x0(,%rdx,4),%edx
  movslq %edx,%rdx
  movslq %r12d,%r12
  shl    $0x3,%rdx
  shl    $0x3,%r12
  cmp    $0x1,%eax
  lea    -0x4(%rdi),%eax
  mov    %eax,-0x14(%rsp)
  jne    L125
  movslq -0x1c(%rsp),%rbp
  mov    %eax,%r13d
  pxor   %xmm0,%xmm0
  mov    %rsi,%r8
  shr    $0x2,%r13d
  lea    0x8(%rsi),%rdi
  movapd %xmm0,%xmm3
  xor    %r9d,%r9d
  lea    0x10(%rsi),%rsi
  movapd %xmm0,%xmm2
  movapd %xmm0,%xmm4
  add    $0x1,%r13d
  lea    0x0(%rbp,%rbp,2),%rax
  neg    %rbp
  lea    (%rcx,%rax,8),%r15
  shl    $0x3,%rbp
  lea    0x18(%r11),%rcx
  xor    %eax,%eax
  lea    (%r15,%rbp,1),%r14
  add    %r14,%rbp
  nopw   0x0(%rax,%rax,1)
L115:
  movupd 0x10(%r8),%xmm1
  movupd (%r10,%rax,1),%xmm8
  add    $0x1,%r9d
  movupd 0x0(%rbp,%rax,1),%xmm7
  movupd (%r14,%rax,1),%xmm6
  unpckhpd %xmm1,%xmm1
  shufpd $0x1,%xmm8,%xmm8
  movupd (%r15,%rax,1),%xmm5
  add    %r12,%rax
  mulpd  %xmm8,%xmm1
  shufpd $0x1,%xmm7,%xmm7
  shufpd $0x1,%xmm6,%xmm6
  shufpd $0x1,%xmm5,%xmm5
  addpd  %xmm1,%xmm4
  movupd 0x10(%rdi),%xmm1
  unpckhpd %xmm1,%xmm1
  mulpd  %xmm7,%xmm1
  addpd  %xmm1,%xmm4
  movupd 0x10(%rsi),%xmm1
  unpckhpd %xmm1,%xmm1
  mulpd  %xmm6,%xmm1
  addpd  %xmm1,%xmm4
  movupd 0x10(%rcx),%xmm1
  unpckhpd %xmm1,%xmm1
  mulpd  %xmm5,%xmm1
  addpd  %xmm1,%xmm4
  movupd 0x10(%r8),%xmm1
  unpcklpd %xmm1,%xmm1
  mulpd  %xmm8,%xmm1
  addpd  %xmm1,%xmm2
  movupd 0x10(%rdi),%xmm1
  unpcklpd %xmm1,%xmm1
  mulpd  %xmm7,%xmm1
  addpd  %xmm1,%xmm2
  movupd 0x10(%rsi),%xmm1
  unpcklpd %xmm1,%xmm1
  mulpd  %xmm6,%xmm1
  addpd  %xmm1,%xmm2
  movupd 0x10(%rcx),%xmm1
  unpcklpd %xmm1,%xmm1
  mulpd  %xmm5,%xmm1
  addpd  %xmm1,%xmm2
  movupd (%r8),%xmm1
  unpckhpd %xmm1,%xmm1
  mulpd  %xmm8,%xmm1
  addpd  %xmm1,%xmm3
  movupd (%rdi),%xmm1
  unpckhpd %xmm1,%xmm1
  mulpd  %xmm7,%xmm1
  addpd  %xmm1,%xmm3
  movupd (%rsi),%xmm1
  unpckhpd %xmm1,%xmm1
  mulpd  %xmm6,%xmm1
  addpd  %xmm1,%xmm3
  movupd (%rcx),%xmm1
  unpckhpd %xmm1,%xmm1
  mulpd  %xmm5,%xmm1
  addpd  %xmm1,%xmm3
  movupd (%r8),%xmm1
  add    %rdx,%r8
  unpcklpd %xmm1,%xmm1
  mulpd  %xmm8,%xmm1
  addpd  %xmm1,%xmm0
  movupd (%rdi),%xmm1
  add    %rdx,%rdi
  unpcklpd %xmm1,%xmm1
  mulpd  %xmm7,%xmm1
  addpd  %xmm1,%xmm0
  movupd (%rsi),%xmm1
  add    %rdx,%rsi
  unpcklpd %xmm1,%xmm1
  mulpd  %xmm6,%xmm1
  addpd  %xmm1,%xmm0
  movupd (%rcx),%xmm1
  add    %rdx,%rcx
  unpcklpd %xmm1,%xmm1
  mulpd  %xmm5,%xmm1
  addpd  %xmm1,%xmm0
  cmp    %r13d,%r9d
  jb     L115
  movapd %xmm4,%xmm7
  movapd %xmm4,%xmm11
  unpckhpd %xmm7,%xmm7
  movapd %xmm7,%xmm10
L86:
  mov    -0x14(%rsp),%ecx
  movapd %xmm2,%xmm6
  movapd %xmm3,%xmm7
  movapd %xmm2,%xmm5
  unpckhpd %xmm6,%xmm6
  unpckhpd %xmm7,%xmm7
  unpcklpd %xmm11,%xmm5
  shr    $0x2,%ecx
  movapd %xmm6,%xmm1
  movapd %xmm0,%xmm6
  lea    0x1(%rcx),%eax
  movapd %xmm7,%xmm8
  unpckhpd %xmm6,%xmm6
  imul   %rax,%rdx
  movapd %xmm0,%xmm7
  unpcklpd %xmm8,%xmm6
  mov    %rax,%rcx
  imul   %r12,%rax
  unpcklpd %xmm10,%xmm1
  unpcklpd %xmm3,%xmm7
  shl    $0x2,%ecx
  add    %rdx,%r11
  add    %rax,%r10
L40:
  cmp    %ecx,%ebx
  jle    L23
  movupd 0x10(%r11),%xmm1
  movupd (%r10),%xmm5
  sub    %ecx,%ebx
  movslq -0x18(%rsp),%rax
  movslq -0x1c(%rsp),%rdx
  unpckhpd %xmm1,%xmm1
  shufpd $0x1,%xmm5,%xmm5
  mulpd  %xmm5,%xmm1
  shl    $0x3,%rax
  shl    $0x3,%rdx
  add    %rdx,%r10
  addpd  %xmm1,%xmm4
  movupd 0x10(%r11),%xmm1
  unpcklpd %xmm1,%xmm1
  mulpd  %xmm5,%xmm1
  addpd  %xmm2,%xmm1
  movupd (%r11),%xmm2
  unpckhpd %xmm2,%xmm2
  mulpd  %xmm5,%xmm2
  addpd  %xmm2,%xmm3
  movupd (%r11),%xmm2
  add    %rax,%r11
  unpcklpd %xmm2,%xmm2
  mulpd  %xmm5,%xmm2
  addpd  %xmm2,%xmm0
  cmp    $0x1,%ebx
  je     L103
  movupd 0x10(%r11),%xmm2
  movupd (%r10),%xmm5
  add    %rdx,%r10
  unpckhpd %xmm2,%xmm2
  shufpd $0x1,%xmm5,%xmm5
  mulpd  %xmm5,%xmm2
  addpd  %xmm2,%xmm4
  movupd 0x10(%r11),%xmm2
  unpcklpd %xmm2,%xmm2
  mulpd  %xmm5,%xmm2
  addpd  %xmm2,%xmm1
  movupd (%r11),%xmm2
  unpckhpd %xmm2,%xmm2
  mulpd  %xmm5,%xmm2
  addpd  %xmm2,%xmm3
  movupd (%r11),%xmm2
  add    %rax,%r11
  unpcklpd %xmm2,%xmm2
  mulpd  %xmm5,%xmm2
  addpd  %xmm2,%xmm0
  cmp    $0x2,%ebx
  je     L103
  movupd 0x10(%r11),%xmm2
  movupd (%r10),%xmm5
  add    %rdx,%r10
  unpckhpd %xmm2,%xmm2
  shufpd $0x1,%xmm5,%xmm5
  mulpd  %xmm5,%xmm2
  addpd  %xmm2,%xmm4
  movupd 0x10(%r11),%xmm2
  unpcklpd %xmm2,%xmm2
  mulpd  %xmm5,%xmm2
  addpd  %xmm2,%xmm1
  movupd (%r11),%xmm2
  unpckhpd %xmm2,%xmm2
  mulpd  %xmm5,%xmm2
  addpd  %xmm2,%xmm3
  movupd (%r11),%xmm2
  add    %rax,%r11
  unpcklpd %xmm2,%xmm2
  mulpd  %xmm5,%xmm2
  addpd  %xmm2,%xmm0
  cmp    $0x3,%ebx
  je     L103
  movupd 0x10(%r11),%xmm5
  movupd (%r10),%xmm6
  movupd (%r11),%xmm2
  movapd %xmm5,%xmm7
  shufpd $0x1,%xmm6,%xmm6
  unpckhpd %xmm5,%xmm7
  unpcklpd %xmm5,%xmm5
  mulpd  %xmm6,%xmm5
  mulpd  %xmm6,%xmm7
  addpd  %xmm5,%xmm1
  movapd %xmm2,%xmm5
  unpckhpd %xmm2,%xmm5
  unpcklpd %xmm2,%xmm2
  addpd  %xmm7,%xmm4
  mulpd  %xmm6,%xmm5
  mulpd  %xmm6,%xmm2
  addpd  %xmm5,%xmm3
  addpd  %xmm2,%xmm0
L103:
  movapd %xmm1,%xmm5
  movapd %xmm0,%xmm7
  unpckhpd %xmm3,%xmm0
  unpcklpd %xmm4,%xmm5
  unpckhpd %xmm4,%xmm1
  unpcklpd %xmm3,%xmm7
  movapd %xmm0,%xmm6
L23:
  mov    0x50(%rsp),%eax
  test   %eax,%eax
  je     L53
  mov    -0x10(%rsp),%rbx
  movslq 0x38(%rsp),%rax
  cmpl   $0x1,0x50(%rsp)
  lea    (%rbx,%rax,8),%rax
  movupd (%rbx),%xmm4
  movupd 0x10(%rbx),%xmm3
  movupd (%rax),%xmm2
  movupd 0x10(%rax),%xmm0
  je     L43
  subpd  %xmm6,%xmm4
  subpd  %xmm1,%xmm3
  subpd  %xmm7,%xmm2
  subpd  %xmm5,%xmm0
  movapd %xmm4,%xmm6
  movapd %xmm3,%xmm1
  movapd %xmm2,%xmm7
  movapd %xmm0,%xmm5
L53:
  mov    0x40(%rsp),%rax
  mov    0x40(%rsp),%rbx
  movups %xmm6,(%rax)
  movups %xmm1,0x10(%rax)
  movslq 0x48(%rsp),%rax
  lea    (%rbx,%rax,8),%rax
  movups %xmm7,(%rax)
  movups %xmm5,0x10(%rax)
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  xchg   %ax,%ax
L43:
  addpd  %xmm4,%xmm6
  addpd  %xmm3,%xmm1
  addpd  %xmm2,%xmm7
  addpd  %xmm0,%xmm5
  jmp    L53
  nopw   0x0(%rax,%rax,1)
L125:
  movslq -0x18(%rsp),%rcx
  shr    $0x2,%eax
  movslq %r8d,%rbp
  pxor   %xmm0,%xmm0
  lea    0x1(%rax),%r15d
  mov    %r11,%r8
  movapd %xmm0,%xmm3
  xor    %r9d,%r9d
  lea    (%rcx,%rcx,2),%rax
  movapd %xmm0,%xmm2
  movapd %xmm0,%xmm4
  neg    %rcx
  lea    (%rsi,%rax,8),%rsi
  lea    0x0(%rbp,%rbp,2),%rax
  neg    %rbp
  shl    $0x3,%rcx
  lea    (%r10,%rax,8),%r14
  shl    $0x3,%rbp
  lea    (%rsi,%rcx,1),%rdi
  xor    %eax,%eax
  lea    (%r14,%rbp,1),%r13
  add    %rdi,%rcx
  add    %r13,%rbp
  nopl   0x0(%rax)
L10:
  movupd 0x10(%r8),%xmm1
  movupd (%r10,%rax,1),%xmm8
  add    $0x1,%r9d
  movupd 0x0(%rbp,%rax,1),%xmm7
  movupd 0x0(%r13,%rax,1),%xmm6
  unpckhpd %xmm1,%xmm1
  shufpd $0x1,%xmm8,%xmm8
  movupd (%r14,%rax,1),%xmm5
  add    %r12,%rax
  mulpd  %xmm8,%xmm1
  shufpd $0x1,%xmm7,%xmm7
  shufpd $0x1,%xmm6,%xmm6
  shufpd $0x1,%xmm5,%xmm5
  addpd  %xmm1,%xmm4
  movupd 0x10(%rcx),%xmm1
  unpckhpd %xmm1,%xmm1
  mulpd  %xmm7,%xmm1
  addpd  %xmm1,%xmm4
  movupd 0x10(%rdi),%xmm1
  unpckhpd %xmm1,%xmm1
  mulpd  %xmm6,%xmm1
  addpd  %xmm1,%xmm4
  movupd 0x10(%rsi),%xmm1
  unpckhpd %xmm1,%xmm1
  mulpd  %xmm5,%xmm1
  addpd  %xmm1,%xmm4
  movupd 0x10(%r8),%xmm1
  unpcklpd %xmm1,%xmm1
  mulpd  %xmm8,%xmm1
  addpd  %xmm1,%xmm2
  movupd 0x10(%rcx),%xmm1
  unpcklpd %xmm1,%xmm1
  mulpd  %xmm7,%xmm1
  addpd  %xmm1,%xmm2
  movupd 0x10(%rdi),%xmm1
  unpcklpd %xmm1,%xmm1
  mulpd  %xmm6,%xmm1
  addpd  %xmm1,%xmm2
  movupd 0x10(%rsi),%xmm1
  unpcklpd %xmm1,%xmm1
  mulpd  %xmm5,%xmm1
  addpd  %xmm1,%xmm2
  movupd (%r8),%xmm1
  unpckhpd %xmm1,%xmm1
  mulpd  %xmm8,%xmm1
  addpd  %xmm1,%xmm3
  movupd (%rcx),%xmm1
  unpckhpd %xmm1,%xmm1
  mulpd  %xmm7,%xmm1
  addpd  %xmm1,%xmm3
  movupd (%rdi),%xmm1
  unpckhpd %xmm1,%xmm1
  mulpd  %xmm6,%xmm1
  addpd  %xmm1,%xmm3
  movupd (%rsi),%xmm1
  unpckhpd %xmm1,%xmm1
  mulpd  %xmm5,%xmm1
  addpd  %xmm1,%xmm3
  movupd (%r8),%xmm1
  add    %rdx,%r8
  unpcklpd %xmm1,%xmm1
  mulpd  %xmm8,%xmm1
  addpd  %xmm1,%xmm0
  movupd (%rcx),%xmm1
  add    %rdx,%rcx
  unpcklpd %xmm1,%xmm1
  mulpd  %xmm7,%xmm1
  addpd  %xmm1,%xmm0
  movupd (%rdi),%xmm1
  add    %rdx,%rdi
  unpcklpd %xmm1,%xmm1
  mulpd  %xmm6,%xmm1
  addpd  %xmm1,%xmm0
  movupd (%rsi),%xmm1
  add    %rdx,%rsi
  unpcklpd %xmm1,%xmm1
  mulpd  %xmm5,%xmm1
  addpd  %xmm1,%xmm0
  cmp    %r9d,%r15d
  ja     L10
  movapd %xmm4,%xmm6
  movapd %xmm4,%xmm11
  unpckhpd %xmm6,%xmm6
  movapd %xmm6,%xmm10
  jmp    L86
  nopl   0x0(%rax)
L96:
  pxor   %xmm0,%xmm0
  xor    %ecx,%ecx
  movapd %xmm0,%xmm3
  movapd %xmm0,%xmm2
  movapd %xmm0,%xmm4
  movapd %xmm0,%xmm1
  movapd %xmm0,%xmm6
  movapd %xmm0,%xmm5
  movapd %xmm0,%xmm7
  jmp    L40
```

assistant: ```c
void kernel_dgemm_nt_4x2_unpack_lib(int kmax, double *A, int lda, double *B, int ldb, double *C, int ldc, double *D, int ldd, int alg, int tc, int td) {
  int k;
  double a_0, a_1, a_2, a_3, b_0, b_1, c_00 = 0, c_01 = 0, c_10 = 0, c_11 = 0, c_20 = 0, c_21 = 0, c_30 = 0, c_31 = 0;
  for (k = 0; k < kmax - 3; k += 4) {
    a_0 = A[0 + lda * 0];
    a_1 = A[1 + lda * 0];
    a_2 = A[2 + lda * 0];
    a_3 = A[3 + lda * 0];
    b_0 = B[0 + ldb * 0];
    b_1 = B[1 + ldb * 0];
    c_00 += a_0 * b_0;
    c_10 += a_1 * b_0;
    c_20 += a_2 * b_0;
    c_30 += a_3 * b_0;
    c_01 += a_0 * b_1;
    c_11 += a_1 * b_1;
    c_21 += a_2 * b_1;
    c_31 += a_3 * b_1;
    a_0 = A[0 + lda * 1];
    a_1 = A[1 + lda * 1];
    a_2 = A[2 + lda * 1];
    a_3 = A[3 + lda * 1];
    b_0 = B[0 + ldb * 1];
    b_1 = B[1 + ldb * 1];
    c_00 += a_0 * b_0;
    c_10 += a_1 * b_0;
    c_20 += a_2 * b_0;
    c_30 += a_3 * b_0;
    c_01 += a_0 * b_1;
    c_11 += a_1 * b_1;
    c_21 += a_2 * b_1;
    c_31 += a_3 * b_1;
    a_0 = A[0 + lda * 2];
    a_1 = A[1 + lda * 2];
    a_2 = A[2 + lda * 2];
    a_3 = A[3 + lda * 2];
    b_0 = B[0 + ldb * 2];
    b_1 = B[1 + ldb * 2];
    c_00 += a_0 * b_0;
    c_10 += a_1 * b_0;
    c_20 += a_2 * b_0;
    c_30 += a_3 * b_0;
    c_01 += a_0 * b_1;
    c_11 += a_1 * b_1;
    c_21 += a_2 * b_1;
    c_31 += a_3 * b_1;
    a_0 = A[0 + lda * 3];
    a_1 = A[1 + lda * 3];
    a_2 = A[2 + lda * 3];
    a_3 = A[3 + lda * 3];
    b_0 = B[0 + ldb * 3];
    b_1 = B[1 + ldb * 3];
    c_00 += a_0 * b_0;
    c_10 += a_1 * b_0;
    c_20 += a_2 * b_0;
    c_30 += a_3 * b_0;
    c_01 += a_0 * b_1;
    c_11 += a_1 * b_1;
    c_21 += a_2 * b_1;
    c_31 += a_3 * b_1;
    A += 4 * lda;
    B += 4 * ldb;
  }
  for (; k < kmax; k++) {
    a_0 = A[0 + lda * 0];
    a_1 = A[1 + lda * 0];
    a_2 = A[2 + lda * 0];
    a_3 = A[3 + lda * 0];
    b_0 = B[0 + ldb * 0];
    b_1 = B[1 + ldb * 0];
    c_00 += a_0 * b_0;
    c_10 += a_1 * b_0;
    c_20 += a_2 * b_0;
    c_30 += a_3 * b_0;
    c_01 += a_0 * b_1;
    c_11 += a_1 * b_1;
    c_21 += a_2 * b_1;
    c_31 += a_3 * b_1;
    A += 1 * lda;
    B += 1 * ldb;
  }
  double d_00, d_01, d_10, d_11, d_20, d_21, d_30, d_31;
  if (alg == 0) {
    goto store;
  } else {
    d_00 = C[0 + ldc * 0];
    d_10 = C[1 + ldc * 0];
    d_20 = C[2 + ldc * 0];
    d_30 = C[3 + ldc * 0];
    d_01 = C[0 + ldc * 1];
    d_11 = C[1 + ldc * 1];
    d_21 = C[2 + ldc * 1];
    d_31 = C[3 + ldc * 1];
    if (alg == 1) {
      c_00 = d_00 + c_00;
      c_10 = d_10 + c_10;
      c_20 = d_20 + c_20;
      c_30 = d_30 + c_30;
      c_01 = d_01 + c_01;
      c_11 = d_11 + c_11;
      c_21 = d_21 + c_21;
      c_31 = d_31 + c_31;
    } else {
      c_00 = d_00 - c_00;
      c_10 = d_10 - c_10;
      c_20 = d_20 - c_20;
      c_30 = d_30 - c_30;
      c_01 = d_01 - c_01;
      c_11 = d_11 - c_11;
      c_21 = d_21 - c_21;
      c_31 = d_31 - c_31;
    }
    goto store;
  }
store:
  D[0 + ldd * 0] = c_00;
  D[1 + ldd * 0] = c_10;
  D[2 + ldd * 0] = c_20;
  D[3 + ldd * 0] = c_30;
  D[0 + ldd * 1] = c_01;
  D[1 + ldd * 1] = c_11;
  D[2 + ldd * 1] = c_21;
  D[3 + ldd * 1] = c_31;
  return;
}
```