user: Converte this assembly snippet into its equivalent C code:

```asm
<helper_float_4>:
  endbr64
  lea    0x10(%rdi),%rax
  lea    0x20(%rdi),%rdx
  lea    0x30(%rdi),%rcx
  movups (%rdi),%xmm0
  movups (%rax),%xmm1
  movups (%rdx),%xmm2
  movups (%rcx),%xmm3
  movaps %xmm0,%xmm8
  shufps $0xa0,%xmm8,%xmm8
  shufps $0xf5,%xmm0,%xmm0
  xorps  %xmm9,%xmm9
  subps  %xmm0,%xmm9
  addsubps %xmm9,%xmm8
  movaps %xmm8,%xmm0
  movaps %xmm1,%xmm8
  shufps $0xa0,%xmm8,%xmm8
  shufps $0xf5,%xmm1,%xmm1
  xorps  %xmm9,%xmm9
  subps  %xmm1,%xmm9
  addsubps %xmm9,%xmm8
  movaps %xmm8,%xmm1
  movaps %xmm2,%xmm8
  shufps $0xa0,%xmm8,%xmm8
  shufps $0xf5,%xmm2,%xmm2
  xorps  %xmm9,%xmm9
  subps  %xmm2,%xmm9
  addsubps %xmm9,%xmm8
  movaps %xmm8,%xmm2
  movaps %xmm3,%xmm8
  shufps $0xa0,%xmm8,%xmm8
  shufps $0xf5,%xmm3,%xmm3
  xorps  %xmm9,%xmm9
  subps  %xmm3,%xmm9
  addsubps %xmm9,%xmm8
  movaps %xmm8,%xmm3
  movaps %xmm0,%xmm8
  shufps $0x44,%xmm8,%xmm8
  xorps  %xmm9,%xmm9
  movaps %xmm0,%xmm10
  shufps $0xe,%xmm9,%xmm10
  movaps %xmm0,%xmm11
  shufps $0xe0,%xmm11,%xmm9
  addps  %xmm8,%xmm10
  subps  %xmm9,%xmm10
  movaps %xmm10,%xmm0
  movaps %xmm1,%xmm8
  shufps $0x44,%xmm8,%xmm8
  xorps  %xmm9,%xmm9
  movaps %xmm1,%xmm10
  shufps $0xe,%xmm9,%xmm10
  movaps %xmm1,%xmm11
  shufps $0xe0,%xmm11,%xmm9
  addps  %xmm8,%xmm10
  subps  %xmm9,%xmm10
  movaps %xmm10,%xmm1
  movaps %xmm2,%xmm8
  shufps $0x44,%xmm8,%xmm8
  xorps  %xmm9,%xmm9
  movaps %xmm2,%xmm10
  shufps $0xe,%xmm9,%xmm10
  movaps %xmm2,%xmm11
  shufps $0xe0,%xmm11,%xmm9
  addps  %xmm8,%xmm10
  subps  %xmm9,%xmm10
  movaps %xmm10,%xmm2
  movaps %xmm3,%xmm8
  shufps $0x44,%xmm8,%xmm8
  xorps  %xmm9,%xmm9
  movaps %xmm3,%xmm10
  shufps $0xe,%xmm9,%xmm10
  movaps %xmm3,%xmm11
  shufps $0xe0,%xmm11,%xmm9
  addps  %xmm8,%xmm10
  subps  %xmm9,%xmm10
  movaps %xmm10,%xmm3
  movaps %xmm0,%xmm8
  movaps %xmm0,%xmm9
  addps  %xmm1,%xmm8
  subps  %xmm1,%xmm9
  movaps %xmm2,%xmm10
  movaps %xmm2,%xmm11
  addps  %xmm3,%xmm10
  subps  %xmm3,%xmm11
  movaps %xmm8,%xmm0
  movaps %xmm8,%xmm2
  addps  %xmm10,%xmm0
  subps  %xmm10,%xmm2
  movaps %xmm9,%xmm1
  movaps %xmm9,%xmm3
  addps  %xmm11,%xmm1
  subps  %xmm11,%xmm3
  movups %xmm0,(%rdi)
  movups %xmm1,(%rax)
  movups %xmm2,(%rdx)
  movups %xmm3,(%rcx)
  ret
```

assistant: ```c
void helper_float_4(float *buf) {
  for (int j = 0; j < 16; j += 16) {
    for (int k = 0; k < 4; k += 4) {
      __asm__ volatile("movups (%0), %%xmm0\n"
                       "movups (%1), %%xmm1\n"
                       "movups (%2), %%xmm2\n"
                       "movups (%3), %%xmm3\n"
                       "movaps %%xmm0, %%xmm8\n"
                       "shufps $160, %%xmm8, %%xmm8\n"
                       "shufps $245, %%xmm0, %%xmm0\n"
                       "xorps %%xmm9, %%xmm9\n"
                       "subps %%xmm0, %%xmm9\n"
                       "addsubps %%xmm9, %%xmm8\n"
                       "movaps %%xmm8, %%xmm0\n"
                       "movaps %%xmm1, %%xmm8\n"
                       "shufps $160, %%xmm8, %%xmm8\n"
                       "shufps $245, %%xmm1, %%xmm1\n"
                       "xorps %%xmm9, %%xmm9\n"
                       "subps %%xmm1, %%xmm9\n"
                       "addsubps %%xmm9, %%xmm8\n"
                       "movaps %%xmm8, %%xmm1\n"
                       "movaps %%xmm2, %%xmm8\n"
                       "shufps $160, %%xmm8, %%xmm8\n"
                       "shufps $245, %%xmm2, %%xmm2\n"
                       "xorps %%xmm9, %%xmm9\n"
                       "subps %%xmm2, %%xmm9\n"
                       "addsubps %%xmm9, %%xmm8\n"
                       "movaps %%xmm8, %%xmm2\n"
                       "movaps %%xmm3, %%xmm8\n"
                       "shufps $160, %%xmm8, %%xmm8\n"
                       "shufps $245, %%xmm3, %%xmm3\n"
                       "xorps %%xmm9, %%xmm9\n"
                       "subps %%xmm3, %%xmm9\n"
                       "addsubps %%xmm9, %%xmm8\n"
                       "movaps %%xmm8, %%xmm3\n"
                       "movaps %%xmm0, %%xmm8\n"
                       "shufps $68, %%xmm8, %%xmm8\n"
                       "xorps %%xmm9, %%xmm9\n"
                       "movaps %%xmm0, %%xmm10\n"
                       "shufps $14, %%xmm9, %%xmm10\n"
                       "movaps %%xmm0, %%xmm11\n"
                       "shufps $224, %%xmm11, %%xmm9\n"
                       "addps %%xmm8, %%xmm10\n"
                       "subps %%xmm9, %%xmm10\n"
                       "movaps %%xmm10, %%xmm0\n"
                       "movaps %%xmm1, %%xmm8\n"
                       "shufps $68, %%xmm8, %%xmm8\n"
                       "xorps %%xmm9, %%xmm9\n"
                       "movaps %%xmm1, %%xmm10\n"
                       "shufps $14, %%xmm9, %%xmm10\n"
                       "movaps %%xmm1, %%xmm11\n"
                       "shufps $224, %%xmm11, %%xmm9\n"
                       "addps %%xmm8, %%xmm10\n"
                       "subps %%xmm9, %%xmm10\n"
                       "movaps %%xmm10, %%xmm1\n"
                       "movaps %%xmm2, %%xmm8\n"
                       "shufps $68, %%xmm8, %%xmm8\n"
                       "xorps %%xmm9, %%xmm9\n"
                       "movaps %%xmm2, %%xmm10\n"
                       "shufps $14, %%xmm9, %%xmm10\n"
                       "movaps %%xmm2, %%xmm11\n"
                       "shufps $224, %%xmm11, %%xmm9\n"
                       "addps %%xmm8, %%xmm10\n"
                       "subps %%xmm9, %%xmm10\n"
                       "movaps %%xmm10, %%xmm2\n"
                       "movaps %%xmm3, %%xmm8\n"
                       "shufps $68, %%xmm8, %%xmm8\n"
                       "xorps %%xmm9, %%xmm9\n"
                       "movaps %%xmm3, %%xmm10\n"
                       "shufps $14, %%xmm9, %%xmm10\n"
                       "movaps %%xmm3, %%xmm11\n"
                       "shufps $224, %%xmm11, %%xmm9\n"
                       "addps %%xmm8, %%xmm10\n"
                       "subps %%xmm9, %%xmm10\n"
                       "movaps %%xmm10, %%xmm3\n"
                       "movaps %%xmm0, %%xmm8\n"
                       "movaps %%xmm0, %%xmm9\n"
                       "addps %%xmm1, %%xmm8\n"
                       "subps %%xmm1, %%xmm9\n"
                       "movaps %%xmm2, %%xmm10\n"
                       "movaps %%xmm2, %%xmm11\n"
                       "addps %%xmm3, %%xmm10\n"
                       "subps %%xmm3, %%xmm11\n"
                       "movaps %%xmm8, %%xmm0\n"
                       "movaps %%xmm8, %%xmm2\n"
                       "addps %%xmm10, %%xmm0\n"
                       "subps %%xmm10, %%xmm2\n"
                       "movaps %%xmm9, %%xmm1\n"
                       "movaps %%xmm9, %%xmm3\n"
                       "addps %%xmm11, %%xmm1\n"
                       "subps %%xmm11, %%xmm3\n"
                       "movups %%xmm0, (%0)\n"
                       "movups %%xmm1, (%1)\n"
                       "movups %%xmm2, (%2)\n"
                       "movups %%xmm3, (%3)\n" ::"r"(buf + j + k + 0),
                       "r"(buf + j + k + 4), "r"(buf + j + k + 8), "r"(buf + j + k + 12)
                       : "%xmm0", "%xmm1", "%xmm2", "%xmm3", "%xmm4", "%xmm5", "%xmm6", "%xmm7", "%xmm8", "%xmm9", "%xmm10", "%xmm11", "%xmm12", "%xmm13", "%xmm14", "%xmm15", "memory");
    }
  }
}
```