user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<miundefined>:
  endbr64
  push   %r15
  mov    %rdx,%r15
  push   %r14
  push   %r13
  mov    %rsi,%r13
  mov    $0x8,%esi
  push   %r12
  mov    %rdi,%r12
  push   %rbp
  push   %rbx
  mov    %rcx,%rbx
  sub    $0x48,%rsp
  mov    0x88(%rsp),%ebp
  mov    %r8,0x10(%rsp)
  mov    %r9d,0x8(%rsp)
  mov    %ebp,%edi
  call   <calloc@plt>
  mov    $0x8,%esi
  mov    %ebp,%edi
  mov    %rax,0x38(%rsp)
  mov    %rax,%r14
  call   <calloc@plt>
  mov    %ebp,%edi
  mov    $0x8,%esi
  imul   %ebp,%edi
  mov    %rax,0x28(%rsp)
  call   <calloc@plt>
  sub    $0x8,%rsp
  mov    %rbx,%rcx
  mov    %r13,%rsi
  mov    %rax,0x38(%rsp)
  mov    %rax,%rdx
  mov    %r12,%rdi
  push   %rbp
  mov    0x90(%rsp),%eax
  push   %rax
  mov    0x20(%rsp),%r9d
  push   %r9
  mov    %rdx,%r9
  mov    %r15,%rdx
  push   0x48(%rsp)
  push   %r14
  mov    0x40(%rsp),%r8
  call   <histU@plt>
  add    $0x30,%rsp
  test   %ebp,%ebp
  jle    L21
  lea    -0x1(%rbp),%eax
  mov    0x28(%rsp),%rbx
  pxor   %xmm2,%xmm2
  mov    %r14,%r13
  shl    $0x3,%rax
  movsd  %xmm2,0x20(%rsp)
  mov    %rax,0x10(%rsp)
  lea    0x8(%rax),%r15
  sub    %r14,%rbx
  lea    (%r15,%r14,1),%r12
  movsd  %xmm2,0x18(%rsp)
  nopl   0x0(%rax)
L49:
  movsd  0x0(%r13),%xmm1
  comisd %xmm2,%xmm1
  jbe    L7
  movapd %xmm1,%xmm0
  movsd  %xmm1,0x8(%rsp)
  call   <log2d@plt>
  movsd  0x8(%rsp),%xmm1
  movsd  0x18(%rsp),%xmm4
  pxor   %xmm2,%xmm2
  mulsd  %xmm1,%xmm0
  subsd  %xmm0,%xmm4
  movsd  %xmm4,0x18(%rsp)
L7:
  movsd  (%rbx,%r13,1),%xmm1
  comisd %xmm2,%xmm1
  jbe    L75
  movapd %xmm1,%xmm0
  movsd  %xmm1,0x8(%rsp)
  call   <log2d@plt>
  movsd  0x8(%rsp),%xmm1
  movsd  0x20(%rsp),%xmm5
  pxor   %xmm2,%xmm2
  mulsd  %xmm1,%xmm0
  subsd  %xmm0,%xmm5
  movsd  %xmm5,0x20(%rsp)
L75:
  add    $0x8,%r13
  cmp    %r12,%r13
  jne    L49
  movslq %ebp,%r13
  add    0x30(%rsp),%r15
  movsd  %xmm2,0x8(%rsp)
  xor    %ebx,%ebx
  mov    $0xfffffffffffffff8,%r12
  shl    $0x3,%r13
  sub    0x10(%rsp),%r12
  nopl   0x0(%rax,%rax,1)
L48:
  lea    (%r12,%r15,1),%r14
  nopl   0x0(%rax)
L69:
  movsd  (%r14),%xmm1
  comisd %xmm2,%xmm1
  jbe    L45
  movapd %xmm1,%xmm0
  movsd  %xmm1,0x10(%rsp)
  call   <log2d@plt>
  movsd  0x10(%rsp),%xmm1
  movsd  0x8(%rsp),%xmm3
  pxor   %xmm2,%xmm2
  mulsd  %xmm1,%xmm0
  subsd  %xmm0,%xmm3
  movsd  %xmm3,0x8(%rsp)
L45:
  add    $0x8,%r14
  cmp    %r14,%r15
  jne    L69
  add    $0x1,%ebx
  add    %r13,%r15
  cmp    %ebx,%ebp
  jne    L48
L2:
  mov    0x30(%rsp),%rdi
  call   <free@plt>
  mov    0x38(%rsp),%rdi
  call   <free@plt>
  mov    0x28(%rsp),%rdi
  call   <free@plt>
  movsd  0x20(%rsp),%xmm0
  addsd  0x18(%rsp),%xmm0
  subsd  0x8(%rsp),%xmm0
  add    $0x48,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L21:
  pxor   %xmm6,%xmm6
  movsd  %xmm6,0x20(%rsp)
  movsd  %xmm6,0x18(%rsp)
  movsd  %xmm6,0x8(%rsp)
  jmp    L2
```

assistant: ```c
double miundefined(const double *x, const double *y, const int *knots, const double *wx, const double *wy, int numSamples, int splineOrder, int numBins) {
  int curBin, curBinX, curBinY;
  double *h1 = (double *)calloc(numBins, sizeof(double));
  double *h2 = (double *)calloc(numBins, sizeof(double));
  double *h12 = (double *)calloc(numBins * numBins, sizeof(double));
  double e1 = 0;
  double e2 = 0;
  double e12 = 0;
  double p;
  histU(x, y, knots, wx, wy, h12, h1, h2, numSamples, splineOrder, numBins);
  for (curBin = 0; curBin < numBins; curBin++) {
    p = h1[curBin];
    if (p > 0)
      e1 -= p * log2d(p);
    p = h2[curBin];
    if (p > 0)
      e2 -= p * log2d(p);
  }
  for (curBinX = 0; curBinX < numBins; curBinX++)
    for (curBinY = 0; curBinY < numBins; curBinY++) {
      p = h12[curBinX * numBins + curBinY];
      if (p > 0)
        e12 -= p * log2d(p);
    }
  free(h12);
  free(h1);
  free(h2);
  return e1 + e2 - e12;
}
```