user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<cov2cor>:
  endbr64
  push   %r15
  push   %r14
  mov    %esi,%r14d
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%rbx
  mov    %esi,%edi
  sub    $0x38,%rsp
  mov    %esi,0x28(%rsp)
  call   <dvector@plt>
  mov    %rax,%r13
  test   %r14d,%r14d
  jle    L0
  mov    %r14d,%eax
  movslq %r14d,%r8
  mov    %r13,%rbp
  mov    %rbx,%r14
  mov    %eax,%eax
  movsd  D16(%rip),%xmm2
  mov    %rbx,%r12
  pxor   %xmm3,%xmm3
  mov    %rax,0x20(%rsp)
  lea    0x0(%r13,%rax,8),%rax
  lea    0x8(,%r8,8),%r15
  mov    %rax,(%rsp)
  nopw   0x0(%rax,%rax,1)
L116:
  movsd  (%r12),%xmm0
  ucomisd %xmm0,%xmm3
  ja     L106
  sqrtsd %xmm0,%xmm0
  movapd %xmm2,%xmm1
  add    %r15,%r12
  add    $0x8,%rbp
  divsd  %xmm0,%xmm1
  movsd  %xmm1,-0x8(%rbp)
  cmp    (%rsp),%rbp
  jne    L116
L89:
  lea    -0x8(%r15),%rdx
  lea    -0x1(%r8),%rax
  mov    0x28(%rsp),%ebp
  xor    %ecx,%ecx
  mov    %rdx,%rsi
  mov    %rcx,%r9
  imul   %rax,%rsi
  lea    0x0(%r13,%rax,8),%rax
  test   %ebp,%ebp
  mov    %rax,0x18(%rsp)
  mov    %ebp,%eax
  cmovns %rsi,%rcx
  cmovs  %rsi,%r9
  shr    %eax
  lea    -0x1(%rax),%edi
  mov    %ebp,%eax
  and    $0xfffffffe,%eax
  add    $0x1,%rdi
  mov    %r9,0x10(%rsp)
  shl    $0x4,%r8
  mov    %eax,0x2c(%rsp)
  imul   %eax,%ebp
  shl    $0x4,%rdi
  lea    0x0(%r13,%rax,8),%r11
  mov    %rcx,0x8(%rsp)
  add    %r13,%rdi
  mov    %r13,%rcx
  xor    %r9d,%r9d
  nopl   0x0(%rax)
L16:
  mov    0x10(%rsp),%r15
  lea    0x0(,%r9,8),%rsi
  mov    %r9d,%eax
  lea    (%r15,%rsi,1),%r10
  add    0x8(%rsp),%rsi
  add    %rbx,%rsi
  add    %rbx,%r10
  cmp    %rcx,%rsi
  setb   %r15b
  cmp    %rcx,%r10
  seta   %r12b
  or     %r15d,%r12d
  cmp    0x18(%rsp),%r10
  seta   %r10b
  cmp    %rsi,%r13
  seta   %sil
  or     %esi,%r10d
  test   %r10b,%r12b
  je     L66
  cmpl   $0x5,0x28(%rsp)
  jbe    L66
  movsd  (%rcx),%xmm2
  mov    %r13,%r10
  mov    %r14,%rsi
  unpcklpd %xmm2,%xmm2
  nopl   (%rax)
L64:
  movupd (%r10),%xmm1
  movsd  (%rsi),%xmm0
  add    $0x10,%r10
  mulpd  %xmm2,%xmm1
  movhpd (%rsi,%rdx,1),%xmm0
  mulpd  %xmm1,%xmm0
  movlpd %xmm0,(%rsi)
  movhpd %xmm0,(%rsi,%rdx,1)
  add    %r8,%rsi
  cmp    %rdi,%r10
  jne    L64
  mov    0x2c(%rsp),%r15d
  cmp    %r15d,0x28(%rsp)
  je     L117
  add    %ebp,%eax
  movsd  (%rcx),%xmm0
  mulsd  (%r11),%xmm0
  cltq
  lea    (%rbx,%rax,8),%rax
  mulsd  (%rax),%xmm0
  movsd  %xmm0,(%rax)
L117:
  add    $0x1,%r9
  add    $0x8,%rcx
  add    $0x8,%r14
  cmp    %r9,0x20(%rsp)
  jne    L16
L0:
  add    $0x38,%rsp
  mov    %r13,%rdi
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    1070 <free@plt>
  nopl   (%rax)
L66:
  mov    (%rsp),%r10
  mov    %r13,%rsi
  mov    %r14,%rax
  nopw   0x0(%rax,%rax,1)
L23:
  movsd  (%rcx),%xmm0
  mulsd  (%rsi),%xmm0
  add    $0x8,%rsi
  mulsd  (%rax),%xmm0
  movsd  %xmm0,(%rax)
  add    %rdx,%rax
  cmp    %r10,%rsi
  jne    L23
  jmp    L117
L106:
  mov    %r8,0x8(%rsp)
  add    %r15,%r12
  add    $0x8,%rbp
  call   <sqrt@plt>
  mov    D16(%rip),%rax
  mov    0x8(%rsp),%r8
  pxor   %xmm3,%xmm3
  movapd %xmm0,%xmm1
  movq   %rax,%xmm0
  movq   %rax,%xmm2
  divsd  %xmm1,%xmm0
  movsd  %xmm0,-0x8(%rbp)
  cmp    (%rsp),%rbp
  jne    L116
  jmp    L89
```

tool_calls: name: extract_symbolic_data
arguments: label: D16
data_type: f64

tool: D16: 1

assistant: ```c
void cov2cor(double *cov, int dim) {
  double *d = dvector(dim);
  for (int i = 0; i < dim; i++) {
    d[i] = 1.0 / sqrt(cov[i * dim + i]);
  }
  for (int i = 0; i < dim; i++) {
    for (int j = 0; j < dim; j++) {
      cov[j * dim + i] *= d[i] * d[j];
    }
  }
  free(d);
}
```