user: Please show me the C implementation that matches the assembly code listed below:

```asm
<mul>:
  endbr64
  push   %r15
  lea    0x10(%rdx),%rax
  xor    %r15d,%r15d
  push   %r14
  mov    %rsi,%r14
  push   %r13
  mov    %rdi,%r13
  push   %r12
  lea    0x70(%rdx),%r12
  push   %rbp
  push   %rbx
  sub    $0x60,%rsp
  movq   $0x0,0x40(%rsp)
  mov    %rax,0x50(%rsp)
L19:
  lea    0x6(%r15),%eax
  mov    %r14,%r10
  mov    %r15,%rbp
  mov    %r15d,%r11d
  mov    %eax,0x4c(%rsp)
  mov    %r14,%rdx
L53:
  mov    %rbp,%rcx
  mov    0x50(%rsp),%rax
  lea    0x0(,%r11,4),%r8d
  lea    0x60(%r10),%rbx
  shl    $0x5,%rcx
  add    %r13,%rcx
L65:
  mov    %rcx,%rsi
  add    $0x20,%rcx
  cmp    %r10,%rcx
  setbe  %dil
  cmp    %rbx,%rsi
  setae  %r9b
  or     %r9b,%dil
  je     L40
  mov    %rsi,%rdi
  sub    %rax,%rdi
  add    $0x8,%rdi
  cmp    $0x1f0,%rdi
  jbe    L40
  movsd  0x20(%rdx),%xmm5
  movsd  0x28(%rdx),%xmm1
  movsd  0x30(%rdx),%xmm6
  movsd  0x50(%rdx),%xmm3
  movupd -0x10(%rax),%xmm13
  movupd (%rax),%xmm0
  unpcklpd %xmm5,%xmm5
  unpcklpd %xmm1,%xmm1
  movlpd -0x8(%rax),%xmm0
  movsd  (%rdx),%xmm14
  unpcklpd %xmm6,%xmm6
  unpcklpd %xmm3,%xmm3
  movhpd (%rax),%xmm13
  movsd  0x40(%rdx),%xmm4
  movaps %xmm5,-0x48(%rsp)
  movupd 0xb0(%rax),%xmm9
  movsd  0x48(%rdx),%xmm5
  movaps %xmm1,0x28(%rsp)
  movapd %xmm0,%xmm1
  movupd 0x50(%rax),%xmm0
  movaps %xmm6,-0x38(%rsp)
  movsd  0x38(%rdx),%xmm6
  unpcklpd %xmm14,%xmm14
  movsd  0x8(%rdx),%xmm8
  movaps %xmm3,0x8(%rsp)
  movsd  0x58(%rdx),%xmm3
  unpcklpd %xmm4,%xmm4
  unpcklpd %xmm5,%xmm5
  movapd %xmm13,%xmm15
  unpcklpd %xmm6,%xmm6
  movhpd 0x60(%rax),%xmm0
  movsd  0x10(%rdx),%xmm12
  mulpd  %xmm14,%xmm15
  unpcklpd %xmm3,%xmm3
  movsd  0x18(%rdx),%xmm7
  movhpd 0xc0(%rax),%xmm9
  movupd 0x60(%rax),%xmm10
  unpcklpd %xmm8,%xmm8
  movlpd 0x58(%rax),%xmm10
  movaps %xmm6,-0x28(%rsp)
  movaps %xmm4,-0x18(%rsp)
  movapd %xmm8,%xmm2
  unpcklpd %xmm12,%xmm12
  unpcklpd %xmm7,%xmm7
  movaps %xmm5,-0x8(%rsp)
  mulpd  %xmm1,%xmm2
  movapd %xmm10,%xmm6
  movaps %xmm3,0x18(%rsp)
  mulpd  %xmm14,%xmm1
  pxor   %xmm14,%xmm14
  movaps %xmm9,-0x68(%rsp)
  mulpd  %xmm13,%xmm8
  movaps %xmm0,-0x58(%rsp)
  movupd 0xc0(%rax),%xmm0
  movupd 0x1d0(%rax),%xmm9
  movlpd 0xb8(%rax),%xmm0
  movupd 0x180(%rax),%xmm4
  movlpd 0x178(%rax),%xmm4
  movupd 0x1e0(%rax),%xmm3
  movhpd 0x1e0(%rax),%xmm9
  movaps %xmm9,-0x78(%rsp)
  pxor   %xmm9,%xmm9
  movupd 0x110(%rax),%xmm11
  addpd  %xmm14,%xmm1
  addpd  %xmm9,%xmm15
  movapd -0x68(%rsp),%xmm9
  mulpd  -0x48(%rsp),%xmm9
  movhpd 0x120(%rax),%xmm11
  movlpd 0x1d8(%rax),%xmm3
  movupd 0x120(%rax),%xmm10
  movlpd 0x118(%rax),%xmm10
  addpd  %xmm8,%xmm1
  subpd  %xmm2,%xmm15
  movapd -0x58(%rsp),%xmm2
  movapd %xmm10,%xmm5
  movupd 0x170(%rax),%xmm10
  mulpd  %xmm12,%xmm2
  movhpd 0x180(%rax),%xmm10
  addpd  %xmm15,%xmm2
  movapd %xmm7,%xmm15
  mulpd  %xmm6,%xmm15
  mulpd  %xmm12,%xmm6
  mulpd  -0x58(%rsp),%xmm7
  subpd  %xmm15,%xmm2
  movapd %xmm9,%xmm15
  movapd 0x28(%rsp),%xmm9
  addpd  %xmm6,%xmm1
  addpd  %xmm2,%xmm15
  movapd %xmm9,%xmm2
  mulpd  %xmm0,%xmm2
  addpd  %xmm7,%xmm1
  mulpd  -0x48(%rsp),%xmm0
  subpd  %xmm2,%xmm15
  movapd -0x38(%rsp),%xmm2
  addpd  %xmm1,%xmm0
  movapd -0x68(%rsp),%xmm1
  mulpd  %xmm11,%xmm2
  mulpd  %xmm9,%xmm1
  addpd  %xmm15,%xmm2
  movapd -0x28(%rsp),%xmm15
  addpd  %xmm1,%xmm0
  movapd -0x28(%rsp),%xmm1
  mulpd  %xmm5,%xmm15
  mulpd  -0x38(%rsp),%xmm5
  mulpd  %xmm11,%xmm1
  subpd  %xmm15,%xmm2
  movapd -0x18(%rsp),%xmm15
  addpd  %xmm5,%xmm0
  mulpd  %xmm10,%xmm15
  addpd  %xmm1,%xmm0
  addpd  %xmm2,%xmm15
  movapd -0x8(%rsp),%xmm2
  mulpd  %xmm4,%xmm2
  mulpd  -0x18(%rsp),%xmm4
  subpd  %xmm2,%xmm15
  movapd 0x8(%rsp),%xmm2
  mulpd  -0x78(%rsp),%xmm2
  addpd  %xmm0,%xmm4
  addpd  %xmm15,%xmm2
  movapd 0x18(%rsp),%xmm15
  movapd -0x8(%rsp),%xmm0
  mulpd  %xmm10,%xmm0
  mulpd  %xmm3,%xmm15
  mulpd  0x8(%rsp),%xmm3
  addpd  %xmm0,%xmm4
  movapd 0x18(%rsp),%xmm0
  mulpd  -0x78(%rsp),%xmm0
  subpd  %xmm15,%xmm2
  addpd  %xmm4,%xmm3
  addpd  %xmm0,%xmm3
  movapd %xmm2,%xmm0
  unpcklpd %xmm3,%xmm0
  unpckhpd %xmm3,%xmm2
  movups %xmm0,(%rsi)
  movups %xmm2,0x10(%rsi)
L51:
  add    $0x20,%rax
  add    $0x4,%r8d
  cmp    %r12,%rax
  jne    L65
  add    $0x60,%rdx
  add    $0x3,%r11d
  add    $0x3,%rbp
  cmp    0x4c(%rsp),%r11d
  je     L69
  mov    %rbx,%r10
  jmp    L53
  cs nopw 0x0(%rax,%rax,1)
L40:
  movupd (%rdx),%xmm5
  movupd (%rdx),%xmm7
  pxor   %xmm11,%xmm11
  movslq %r8d,%rsi
  movupd -0x10(%rax),%xmm6
  movupd 0x50(%rax),%xmm4
  unpcklpd %xmm5,%xmm5
  unpckhpd %xmm7,%xmm7
  movupd 0xb0(%rax),%xmm2
  movupd 0x110(%rax),%xmm1
  mulpd  %xmm6,%xmm5
  shufpd $0x1,%xmm6,%xmm6
  movupd 0x170(%rax),%xmm0
  movupd 0x1d0(%rax),%xmm3
  mulpd  %xmm7,%xmm6
  addpd  %xmm11,%xmm5
  movapd %xmm5,%xmm7
  addpd  %xmm6,%xmm5
  subpd  %xmm6,%xmm7
  movupd 0x10(%rdx),%xmm6
  unpcklpd %xmm6,%xmm6
  mulpd  %xmm4,%xmm6
  movsd  %xmm7,%xmm5
  shufpd $0x1,%xmm4,%xmm4
  addpd  %xmm6,%xmm5
  movupd 0x10(%rdx),%xmm6
  unpckhpd %xmm6,%xmm6
  mulpd  %xmm6,%xmm4
  movapd %xmm5,%xmm6
  subpd  %xmm4,%xmm6
  addpd  %xmm5,%xmm4
  movupd 0x20(%rdx),%xmm5
  unpcklpd %xmm5,%xmm5
  mulpd  %xmm2,%xmm5
  movsd  %xmm6,%xmm4
  shufpd $0x1,%xmm2,%xmm2
  addpd  %xmm5,%xmm4
  movupd 0x20(%rdx),%xmm5
  unpckhpd %xmm5,%xmm5
  mulpd  %xmm5,%xmm2
  movapd %xmm4,%xmm5
  subpd  %xmm2,%xmm5
  addpd  %xmm4,%xmm2
  movupd 0x30(%rdx),%xmm4
  unpcklpd %xmm4,%xmm4
  mulpd  %xmm1,%xmm4
  movsd  %xmm5,%xmm2
  shufpd $0x1,%xmm1,%xmm1
  addpd  %xmm4,%xmm2
  movupd 0x30(%rdx),%xmm4
  unpckhpd %xmm4,%xmm4
  mulpd  %xmm4,%xmm1
  movapd %xmm2,%xmm4
  subpd  %xmm1,%xmm4
  addpd  %xmm2,%xmm1
  movupd 0x40(%rdx),%xmm2
  unpcklpd %xmm2,%xmm2
  mulpd  %xmm0,%xmm2
  movsd  %xmm4,%xmm1
  shufpd $0x1,%xmm0,%xmm0
  addpd  %xmm2,%xmm1
  movupd 0x40(%rdx),%xmm2
  unpckhpd %xmm2,%xmm2
  mulpd  %xmm2,%xmm0
  movapd %xmm1,%xmm2
  subpd  %xmm0,%xmm2
  addpd  %xmm1,%xmm0
  movupd 0x50(%rdx),%xmm1
  unpcklpd %xmm1,%xmm1
  mulpd  %xmm3,%xmm1
  movsd  %xmm2,%xmm0
  shufpd $0x1,%xmm3,%xmm3
  addpd  %xmm1,%xmm0
  movupd 0x50(%rdx),%xmm1
  unpckhpd %xmm1,%xmm1
  mulpd  %xmm1,%xmm3
  movapd %xmm0,%xmm1
  subpd  %xmm3,%xmm1
  addpd  %xmm3,%xmm0
  movsd  %xmm1,%xmm0
  movups %xmm0,0x0(%r13,%rsi,8)
  movupd (%rdx),%xmm0
  movupd (%rax),%xmm7
  lea    0x2(%r8),%esi
  movupd (%rdx),%xmm2
  movupd 0x60(%rax),%xmm6
  movslq %esi,%rsi
  unpcklpd %xmm0,%xmm0
  movupd 0xc0(%rax),%xmm5
  movupd 0x120(%rax),%xmm4
  mulpd  %xmm7,%xmm0
  unpckhpd %xmm2,%xmm2
  shufpd $0x1,%xmm7,%xmm7
  movupd 0x180(%rax),%xmm3
  mulpd  %xmm7,%xmm2
  movupd 0x1e0(%rax),%xmm1
  addpd  %xmm11,%xmm0
  movapd %xmm0,%xmm7
  addpd  %xmm2,%xmm0
  subpd  %xmm2,%xmm7
  movupd 0x10(%rdx),%xmm2
  unpcklpd %xmm2,%xmm2
  mulpd  %xmm6,%xmm2
  movsd  %xmm7,%xmm0
  shufpd $0x1,%xmm6,%xmm6
  addpd  %xmm2,%xmm0
  movupd 0x10(%rdx),%xmm2
  unpckhpd %xmm2,%xmm2
  mulpd  %xmm6,%xmm2
  movapd %xmm0,%xmm6
  subpd  %xmm2,%xmm6
  addpd  %xmm2,%xmm0
  movupd 0x20(%rdx),%xmm2
  unpcklpd %xmm2,%xmm2
  mulpd  %xmm5,%xmm2
  movsd  %xmm6,%xmm0
  shufpd $0x1,%xmm5,%xmm5
  addpd  %xmm2,%xmm0
  movupd 0x20(%rdx),%xmm2
  unpckhpd %xmm2,%xmm2
  mulpd  %xmm5,%xmm2
  movapd %xmm0,%xmm5
  subpd  %xmm2,%xmm5
  addpd  %xmm2,%xmm0
  movupd 0x30(%rdx),%xmm2
  unpcklpd %xmm2,%xmm2
  mulpd  %xmm4,%xmm2
  movsd  %xmm5,%xmm0
  shufpd $0x1,%xmm4,%xmm4
  addpd  %xmm2,%xmm0
  movupd 0x30(%rdx),%xmm2
  unpckhpd %xmm2,%xmm2
  mulpd  %xmm4,%xmm2
  movapd %xmm0,%xmm4
  subpd  %xmm2,%xmm4
  addpd  %xmm2,%xmm0
  movupd 0x40(%rdx),%xmm2
  unpcklpd %xmm2,%xmm2
  mulpd  %xmm3,%xmm2
  movsd  %xmm4,%xmm0
  shufpd $0x1,%xmm3,%xmm3
  addpd  %xmm2,%xmm0
  movupd 0x40(%rdx),%xmm2
  unpckhpd %xmm2,%xmm2
  mulpd  %xmm3,%xmm2
  movapd %xmm0,%xmm3
  subpd  %xmm2,%xmm3
  addpd  %xmm2,%xmm0
  movupd 0x50(%rdx),%xmm2
  unpcklpd %xmm2,%xmm2
  mulpd  %xmm1,%xmm2
  movsd  %xmm3,%xmm0
  shufpd $0x1,%xmm1,%xmm1
  addpd  %xmm2,%xmm0
  movupd 0x50(%rdx),%xmm2
  unpckhpd %xmm2,%xmm2
  mulpd  %xmm2,%xmm1
  movapd %xmm0,%xmm2
  subpd  %xmm1,%xmm2
  addpd  %xmm1,%xmm0
  movsd  %xmm2,%xmm0
  movups %xmm0,0x0(%r13,%rsi,8)
  jmp    L51
L69:
  addq   $0x2,0x40(%rsp)
  mov    0x40(%rsp),%rax
  add    $0xc0,%r14
  add    $0x6,%r15
  cmp    $0x6,%rax
  jne    L19
  add    $0x60,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
```

assistant: ```c
void mul(double v[], const double x[], const double y[]) {
  int a, i, b, j;
  int c, k;
  for (a = 0; a < 3; a++)
    for (i = 0; i < 2; i++) {
      for (b = 0; b < 3; b++)
        for (j = 0; j < 2; j++) {
          double vr = 0;
          double vi = 0;
          for (c = 0; c < 3; c++)
            for (k = 0; k < 2; k++) {
              vr += (&((x)[2 * ((k) + 2 * ((c) + 3 * ((i) + 2 * (a))))]))[0] * (&((y)[2 * ((j) + 2 * ((b) + 3 * ((k) + 2 * (c))))]))[0];
              vr -= (&((x)[2 * ((k) + 2 * ((c) + 3 * ((i) + 2 * (a))))]))[1] * (&((y)[2 * ((j) + 2 * ((b) + 3 * ((k) + 2 * (c))))]))[1];
              vi += (&((x)[2 * ((k) + 2 * ((c) + 3 * ((i) + 2 * (a))))]))[0] * (&((y)[2 * ((j) + 2 * ((b) + 3 * ((k) + 2 * (c))))]))[1];
              vi += (&((x)[2 * ((k) + 2 * ((c) + 3 * ((i) + 2 * (a))))]))[1] * (&((y)[2 * ((j) + 2 * ((b) + 3 * ((k) + 2 * (c))))]))[0];
            }
          (&((v)[2 * ((j) + 2 * ((b) + 3 * ((i) + 2 * (a))))]))[0] = vr;
          (&((v)[2 * ((j) + 2 * ((b) + 3 * ((i) + 2 * (a))))]))[1] = vi;
        }
    }
}
```