user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<autoc>:
  endbr64
  push   %r13
  mov    %edx,%r13d
  push   %r12
  mov    %rcx,%r12
  push   %rbp
  push   %rbx
  sub    $0x28,%rsp
  test   %edi,%edi
  je     L19
  lea    -0x1(%rdi),%edx
  mov    %rsi,%rbx
  mov    %edx,%ebp
  cmp    $0x2,%edx
  jbe    L191
  mov    %edi,%ecx
  pxor   %xmm3,%xmm3
  mov    %rsi,%rax
  shr    $0x2,%ecx
  movaps %xmm3,%xmm2
  sub    $0x1,%ecx
  shl    $0x4,%rcx
  lea    0x10(%rsi,%rcx,1),%rcx
  nopl   0x0(%rax,%rax,1)
L161:
  movups (%rax),%xmm0
  add    $0x10,%rax
  mulps  %xmm0,%xmm0
  movaps %xmm0,%xmm1
  addss  %xmm2,%xmm1
  movaps %xmm0,%xmm2
  shufps $0x55,%xmm0,%xmm2
  addss  %xmm2,%xmm1
  movaps %xmm0,%xmm2
  unpckhps %xmm0,%xmm2
  shufps $0xff,%xmm0,%xmm0
  addss  %xmm2,%xmm1
  addss  %xmm0,%xmm1
  movaps %xmm1,%xmm2
  cmp    %rcx,%rax
  jne    L161
  mov    %edi,%eax
  and    $0xfffffffc,%eax
  mov    %eax,%ecx
  sub    %eax,%edx
  lea    (%rbx,%rcx,4),%rcx
  cmp    %eax,%edi
  je     L171
L105:
  movss  (%rcx),%xmm0
  mulss  %xmm0,%xmm0
  addss  %xmm0,%xmm2
  test   %edx,%edx
  je     L171
  movss  0x4(%rcx),%xmm0
  mulss  %xmm0,%xmm0
  addss  %xmm0,%xmm2
  cmp    $0x1,%edx
  je     L171
  movss  0x8(%rcx),%xmm0
  mulss  %xmm0,%xmm0
  addss  %xmm0,%xmm2
L171:
  ucomiss %xmm3,%xmm2
  movss  D18(%rip),%xmm4
  movss  %xmm4,(%r12)
  jp     L96
  je     L29
L96:
  pxor   %xmm1,%xmm1
  movaps %xmm2,%xmm0
  cvtsi2ss %edi,%xmm1
  divss  %xmm1,%xmm0
  ucomiss %xmm0,%xmm3
  ja     L179
  sqrtss %xmm0,%xmm0
L130:
  divss  %xmm2,%xmm4
  movss  %xmm0,(%r8)
  test   %r13d,%r13d
  jle    L73
  lea    -0x2(%rdi),%esi
  lea    0x4(%rbx),%rcx
  sub    %r13d,%edi
  mov    %rcx,%rax
  mov    %esi,%r8d
  test   %ebp,%ebp
  je     L58
  nopl   (%rax)
L41:
  cmp    $0x2,%esi
  jbe    L52
  mov    %ebp,%edx
  xor    %eax,%eax
  movaps %xmm3,%xmm1
  shr    $0x2,%edx
  shl    $0x4,%rdx
  nop
L141:
  movups (%rbx,%rax,1),%xmm0
  movups (%rcx,%rax,1),%xmm5
  add    $0x10,%rax
  mulps  %xmm5,%xmm0
  addss  %xmm0,%xmm1
  movaps %xmm0,%xmm2
  shufps $0x55,%xmm0,%xmm2
  addss  %xmm2,%xmm1
  movaps %xmm0,%xmm2
  unpckhps %xmm0,%xmm2
  shufps $0xff,%xmm0,%xmm0
  addss  %xmm2,%xmm1
  addss  %xmm0,%xmm1
  cmp    %rax,%rdx
  jne    L141
  mov    %ebp,%edx
  mov    %esi,%r8d
  and    $0xfffffffc,%edx
  mov    %edx,%eax
  sub    %edx,%r8d
  shl    $0x2,%rax
  lea    (%rbx,%rax,1),%r9
  add    %rcx,%rax
  cmp    %ebp,%edx
  je     L152
L127:
  movss  (%r9),%xmm0
  mulss  (%rax),%xmm0
  addss  %xmm0,%xmm1
  test   %r8d,%r8d
  je     L152
  movss  0x4(%r9),%xmm0
  mulss  0x4(%rax),%xmm0
  addss  %xmm0,%xmm1
  cmp    $0x1,%r8d
  je     L152
  movss  0x8(%r9),%xmm0
  mulss  0x8(%rax),%xmm0
  addss  %xmm0,%xmm1
L152:
  mulss  %xmm4,%xmm1
  add    $0x4,%r12
  lea    -0x1(%rbp),%eax
  add    $0x4,%rcx
  sub    $0x1,%esi
  movss  %xmm1,(%r12)
  cmp    %edi,%ebp
  je     L73
  mov    %eax,%ebp
  mov    %esi,%r8d
  mov    %rcx,%rax
  test   %ebp,%ebp
  jne    L41
L58:
  movaps %xmm3,%xmm1
  jmp    L152
L19:
  movss  D18(%rip),%xmm4
  movss  %xmm4,(%rcx)
L29:
  movss  %xmm4,(%r8)
  test   %r13d,%r13d
  jle    L73
  add    $0x28,%rsp
  movslq %r13d,%rdx
  lea    0x4(%r12),%rdi
  xor    %esi,%esi
  pop    %rbx
  shl    $0x2,%rdx
  pop    %rbp
  pop    %r12
  pop    %r13
  jmp    1060 <memset@plt>
  nopl   0x0(%rax,%rax,1)
L73:
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L52:
  mov    %rbx,%r9
  movaps %xmm3,%xmm1
  jmp    L127
L191:
  pxor   %xmm3,%xmm3
  mov    %rsi,%rcx
  movaps %xmm3,%xmm2
  jmp    L105
L179:
  mov    %r8,0x10(%rsp)
  mov    %edi,0xc(%rsp)
  movss  %xmm4,0x1c(%rsp)
  movss  %xmm3,0x18(%rsp)
  movss  %xmm2,0x8(%rsp)
  call   <sqrtf@plt>
  movss  0x1c(%rsp),%xmm4
  movss  0x18(%rsp),%xmm3
  mov    0x10(%rsp),%r8
  mov    0xc(%rsp),%edi
  movss  0x8(%rsp),%xmm2
  jmp    L130
```

tool_calls: name: read_data
arguments: data_label: D18
datatype: f32

tool: D18: 1

assistant: ```c
void autoc(windowsize, s, p, r, e) register int p, windowsize;
register float *s, *e;
register float *r;
{
  register int i, j;
  register float *q, *t, sum, sum0;
  for (i = windowsize, q = s, sum0 = 0.0; i--;) {
    sum = *q++;
    sum0 += sum * sum;
  }
  *r = 1.;
  if (sum0 == 0.0) {
    *e = 1.;
    for (i = 1; i <= p; i++) {
      r[i] = 0.;
    }
    return;
  }
  *e = sqrt((double)(sum0 / windowsize));
  sum0 = 1.0 / sum0;
  for (i = 1; i <= p; i++) {
    for (sum = 0.0, j = windowsize - i, q = s, t = s + i; j--;)
      sum += (*q++) * (*t++);
    *(++r) = sum * sum0;
  }
}
```