user: Translate the below assembly code into C programming language:

```asm
<mm3x3>:
  endbr64
  movupd (%rsi),%xmm3
  movupd 0x10(%rdi),%xmm0
  movupd (%rdi),%xmm9
  movupd 0x20(%rdi),%xmm1
  movapd %xmm3,%xmm14
  movapd %xmm3,%xmm15
  movapd %xmm0,%xmm8
  movsd  0x30(%rdi),%xmm7
  unpcklpd %xmm3,%xmm14
  unpckhpd %xmm3,%xmm15
  shufpd $0x1,%xmm1,%xmm8
  movsd  0x10(%rsi),%xmm13
  mulpd  %xmm8,%xmm15
  movsd  0x38(%rdi),%xmm10
  movapd %xmm7,%xmm5
  movupd 0x10(%rsi),%xmm11
  mulpd  %xmm9,%xmm14
  movupd 0x20(%rsi),%xmm6
  movsd  0x28(%rsi),%xmm12
  unpcklpd %xmm10,%xmm5
  movupd 0x30(%rsi),%xmm2
  movsd  0x40(%rsi),%xmm4
  movaps %xmm5,-0x18(%rsp)
  movsd  0x40(%rdi),%xmm5
  unpcklpd %xmm5,%xmm10
  addpd  %xmm15,%xmm14
  movapd %xmm13,%xmm15
  unpcklpd %xmm12,%xmm13
  unpcklpd %xmm15,%xmm15
  unpcklpd %xmm12,%xmm12
  mulpd  -0x18(%rsp),%xmm15
  mulpd  %xmm12,%xmm10
  addpd  %xmm15,%xmm14
  movapd %xmm0,%xmm15
  unpcklpd %xmm9,%xmm15
  movups %xmm14,(%rdx)
  movapd %xmm11,%xmm14
  unpckhpd %xmm11,%xmm11
  movsd  %xmm3,%xmm14
  shufpd $0x1,%xmm6,%xmm3
  unpcklpd %xmm6,%xmm6
  mulpd  %xmm14,%xmm15
  movapd %xmm1,%xmm14
  mulpd  %xmm1,%xmm6
  unpckhpd %xmm0,%xmm14
  unpckhpd %xmm1,%xmm1
  mulpd  %xmm3,%xmm14
  movapd %xmm15,%xmm3
  addpd  %xmm14,%xmm3
  movapd %xmm5,%xmm14
  unpcklpd %xmm7,%xmm14
  mulpd  %xmm14,%xmm13
  addpd  %xmm13,%xmm3
  movups %xmm3,0x10(%rdx)
  movapd %xmm9,%xmm3
  shufpd $0x1,%xmm0,%xmm3
  mulpd  %xmm11,%xmm3
  mulsd  %xmm2,%xmm0
  addpd  %xmm6,%xmm3
  movapd %xmm2,%xmm6
  unpckhpd %xmm2,%xmm6
  mulpd  %xmm8,%xmm6
  addpd  %xmm10,%xmm3
  movups %xmm3,0x20(%rdx)
  movapd %xmm2,%xmm3
  unpcklpd %xmm2,%xmm3
  unpckhpd %xmm2,%xmm2
  mulpd  %xmm9,%xmm3
  mulsd  %xmm2,%xmm1
  addpd  %xmm6,%xmm3
  movapd %xmm4,%xmm6
  mulsd  %xmm5,%xmm4
  unpcklpd %xmm6,%xmm6
  addsd  %xmm1,%xmm0
  mulpd  -0x18(%rsp),%xmm6
  addsd  %xmm4,%xmm0
  addpd  %xmm6,%xmm3
  movsd  %xmm0,0x40(%rdx)
  movups %xmm3,0x30(%rdx)
  ret
```

assistant: ```c
void mm3x3(double *restrict a, double *restrict b, double *restrict c) {
  double *a00 __attribute__((unused)) = a++;
  double *a10 __attribute__((unused)) = a++;
  double *a20 __attribute__((unused)) = a++;
  double *a01 __attribute__((unused)) = a++;
  double *a11 __attribute__((unused)) = a++;
  double *a21 __attribute__((unused)) = a++;
  double *a02 __attribute__((unused)) = a++;
  double *a12 __attribute__((unused)) = a++;
  double *a22 __attribute__((unused)) = a++;
  ;
  double *b00 __attribute__((unused)) = b++;
  double *b10 __attribute__((unused)) = b++;
  double *b20 __attribute__((unused)) = b++;
  double *b01 __attribute__((unused)) = b++;
  double *b11 __attribute__((unused)) = b++;
  double *b21 __attribute__((unused)) = b++;
  double *b02 __attribute__((unused)) = b++;
  double *b12 __attribute__((unused)) = b++;
  double *b22 __attribute__((unused)) = b++;
  ;
  double *c00 __attribute__((unused)) = c++;
  double *c10 __attribute__((unused)) = c++;
  double *c20 __attribute__((unused)) = c++;
  double *c01 __attribute__((unused)) = c++;
  double *c11 __attribute__((unused)) = c++;
  double *c21 __attribute__((unused)) = c++;
  double *c02 __attribute__((unused)) = c++;
  double *c12 __attribute__((unused)) = c++;
  double *c22 __attribute__((unused)) = c++;
  ;
  *c00 = *a00 * *b00 + *a01 * *b10 + *a02 * *b20;
  *c01 = *a00 * *b01 + *a01 * *b11 + *a02 * *b21;
  *c02 = *a00 * *b02 + *a01 * *b12 + *a02 * *b22;
  *c10 = *a10 * *b00 + *a11 * *b10 + *a12 * *b20;
  *c11 = *a10 * *b01 + *a11 * *b11 + *a12 * *b21;
  *c12 = *a10 * *b02 + *a11 * *b12 + *a12 * *b22;
  *c20 = *a20 * *b00 + *a21 * *b10 + *a22 * *b20;
  *c21 = *a20 * *b01 + *a21 * *b11 + *a22 * *b21;
  *c22 = *a20 * *b02 + *a21 * *b12 + *a22 * *b22;
}
```