user: 请从给定的汇编指令推导出C源代码：

```asm
<kmeans_clustering>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  mov    %esi,%r12d
  push   %rbp
  push   %rbx
  sub    $0x38,%rsp
  cmp    %edx,%ecx
  cmovg  %edx,%ecx
  mov    %rdi,0x10(%rsp)
  mov    %edx,0x20(%rsp)
  movslq %ecx,%rax
  mov    %r8,0x18(%rsp)
  lea    0x0(,%rax,8),%rbx
  movss  %xmm0,0x24(%rsp)
  mov    %rax,%r14
  mov    %rbx,%rdi
  mov    %rax,0x8(%rsp)
  call   <malloc@plt>
  mov    %rax,%r15
  mov    %r14d,%eax
  imul   %r12d,%eax
  cltq
  lea    0x0(,%rax,4),%rdi
  mov    %rax,0x28(%rsp)
  call   <malloc@plt>
  mov    %rax,(%r15)
  cmp    $0x1,%r14d
  jle    L75
  movslq %r12d,%rsi
  lea    -0x1(%r14),%edi
  mov    %rax,%rdx
  shl    $0x2,%rsi
  lea    0x8(%r15),%rax
  lea    (%r15,%rdi,8),%rdi
  jmp    L217
L189:
  add    $0x8,%rax
L217:
  add    %rsi,%rdx
  mov    %rdx,(%rax)
  cmp    %rdi,%rax
  jne    L189
L75:
  mov    0x20(%rsp),%r13d
  movslq %r13d,%rbp
  lea    0x0(,%rbp,4),%rdi
  call   <malloc@plt>
  test   %r14d,%r14d
  mov    %rax,%r10
  mov    %r13d,%eax
  setg   %dl
  not    %eax
  shr    $0x1f,%eax
  and    %eax,%edx
  test   %r13d,%r13d
  jle    L4
  xor    %eax,%eax
L179:
  mov    %eax,(%r10,%rax,4)
  add    $0x1,%rax
  cmp    %rax,%rbp
  jne    L179
  mov    0x20(%rsp),%eax
  lea    -0x1(%rax),%ecx
  test   %dl,%dl
  je     L130
L90:
  mov    0x20(%rsp),%eax
  mov    0x10(%rsp),%r9
  mov    $0x1,%r8d
  movslq %r12d,%rdi
  lea    -0x1(%rax),%ecx
  movslq %ecx,%r11
L127:
  mov    -0x4(%r10,%r8,4),%ebp
  test   %r12d,%r12d
  jle    L200
  movslq %ebp,%rax
  mov    -0x8(%r15,%r8,8),%rdx
  mov    (%r9,%rax,8),%rsi
  xor    %eax,%eax
  nopw   0x0(%rax,%rax,1)
L198:
  movss  (%rsi,%rax,4),%xmm0
  movss  %xmm0,(%rdx,%rax,4)
  add    $0x1,%rax
  cmp    %rax,%rdi
  jne    L198
L200:
  mov    (%r10,%r11,4),%eax
  cmp    %r8d,%r14d
  setg   %dl
  mov    %eax,-0x4(%r10,%r8,4)
  mov    %r11d,%eax
  add    $0x1,%r8
  not    %eax
  mov    %ebp,(%r10,%r11,4)
  sub    $0x1,%r11
  shr    $0x1f,%eax
  test   %al,%dl
  jne    L127
  mov    0x20(%rsp),%esi
  test   %esi,%esi
  je     L211
L130:
  mov    %ecx,%eax
  mov    0x20(%rsp),%ecx
  mov    0x18(%rsp),%rdi
  mov    $0xff,%esi
  lea    0x4(,%rax,4),%rdx
  mov    $0x4,%eax
  test   %ecx,%ecx
  cmovle %rax,%rdx
  call   <memset@plt>
L211:
  mov    0x8(%rsp),%rdi
  mov    $0x4,%esi
  call   <calloc@plt>
  mov    %rbx,%rdi
  mov    %rax,%rbp
  call   <malloc@plt>
  mov    0x28(%rsp),%rdi
  mov    $0x4,%esi
  mov    %rax,%r13
  call   <calloc@plt>
  mov    %rax,0x0(%r13)
  mov    %rax,%rdx
  cmp    $0x1,%r14d
  jle    L182
  movslq %r12d,%rsi
  lea    -0x1(%r14),%edi
  lea    0x8(%r13),%rax
  shl    $0x2,%rsi
  lea    0x0(%r13,%rdi,8),%rdi
  jmp    L207
L86:
  add    $0x8,%rax
L207:
  add    %rsi,%rdx
  mov    %rdx,(%rax)
  cmp    %rax,%rdi
  jne    L86
L182:
  lea    -0x1(%r12),%eax
  xor    %r11d,%r11d
  mov    %r12d,%esi
  lea    0x4(,%rax,4),%rbx
  mov    %r11d,%r12d
  cs nopw 0x0(%rax,%rax,1)
L110:
  push   %r13
  xor    %eax,%eax
  mov    %r15,%r9
  mov    %r14d,%ecx
  push   %rbp
  mov    0x20(%rsp),%rdi
  mov    0x28(%rsp),%r8
  mov    0x30(%rsp),%edx
  mov    %esi,0x18(%rsp)
  call   <kmeansOCL@plt>
  pxor   %xmm2,%xmm2
  xor    %edi,%edi
  test   %r14d,%r14d
  cvtsi2ss %eax,%xmm2
  pop    %rax
  pop    %rdx
  mov    0x8(%rsp),%esi
  jle    L160
  nopw   0x0(%rax,%rax,1)
L73:
  test   %esi,%esi
  jle    L139
  mov    0x0(%rbp,%rdi,4),%ecx
  mov    0x0(%r13,%rdi,8),%rdx
  xor    %eax,%eax
  nop
L191:
  test   %ecx,%ecx
  jle    L168
  pxor   %xmm1,%xmm1
  movss  (%rdx,%rax,1),%xmm0
  mov    (%r15,%rdi,8),%r8
  cvtsi2ss %ecx,%xmm1
  divss  %xmm1,%xmm0
  movss  %xmm0,(%r8,%rax,1)
L168:
  movl   $0x0,(%rdx,%rax,1)
  add    $0x4,%rax
  cmp    %rax,%rbx
  jne    L191
L139:
  movl   $0x0,0x0(%rbp,%rdi,4)
  add    $0x1,%rdi
  cmp    %edi,%r14d
  jg     L73
L160:
  add    $0x1,%r12d
  comiss 0x24(%rsp),%xmm2
  jbe    L118
  cmp    $0x1f5,%r12d
  jne    L110
L118:
  mov    %r12d,%esi
  lea    D3(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  mov    0x0(%r13),%rdi
  call   <free@plt>
  mov    %r13,%rdi
  call   <free@plt>
  mov    %rbp,%rdi
  call   <free@plt>
  add    $0x38,%rsp
  mov    %r15,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L4:
  test   %dl,%dl
  jne    L90
  jmp    L211
```

tool_calls: name: extract_symbolic_data
arguments: label: D3
type_guessed: string

tool: D3: iterated %d times


assistant: ```c
float **kmeans_clustering(float **feature, int nfeatures, int npoints, int nclusters, float threshold, int *membership) {
  int i, j, n = 0;
  int loop = 0, temp;
  int *new_centers_len;
  float delta;
  float **clusters;
  float **new_centers;
  int *initial;
  int initial_points;
  int c = 0;
  if (nclusters > npoints)
    nclusters = npoints;
  clusters = (float **)malloc(nclusters * sizeof(float *));
  clusters[0] = (float *)malloc(nclusters * nfeatures * sizeof(float));
  for (i = 1; i < nclusters; i++)
    clusters[i] = clusters[i - 1] + nfeatures;
  initial = (int *)malloc(npoints * sizeof(int));
  for (i = 0; i < npoints; i++) {
    initial[i] = i;
  }
  initial_points = npoints;
  for (i = 0; i < nclusters && initial_points >= 0; i++) {
    for (j = 0; j < nfeatures; j++)
      clusters[i][j] = feature[initial[n]][j];
    temp = initial[n];
    initial[n] = initial[initial_points - 1];
    initial[initial_points - 1] = temp;
    initial_points--;
    n++;
  }
  for (i = 0; i < npoints; i++)
    membership[i] = -1;
  new_centers_len = (int *)calloc(nclusters, sizeof(int));
  new_centers = (float **)malloc(nclusters * sizeof(float *));
  new_centers[0] = (float *)calloc(nclusters * nfeatures, sizeof(float));
  for (i = 1; i < nclusters; i++)
    new_centers[i] = new_centers[i - 1] + nfeatures;
  do {
    delta = 0.0;
    delta = (float)kmeansOCL(feature, nfeatures, npoints, nclusters, membership, clusters, new_centers_len, new_centers);
    for (i = 0; i < nclusters; i++) {
      for (j = 0; j < nfeatures; j++) {
        if (new_centers_len[i] > 0)
          clusters[i][j] = new_centers[i][j] / new_centers_len[i];
        new_centers[i][j] = 0.0;
      }
      new_centers_len[i] = 0;
    }
    c++;
  } while ((delta > threshold) && (loop++ < 500));
  printf("iterated %d times\n", c);
  free(new_centers[0]);
  free(new_centers);
  free(new_centers_len);
  return clusters;
}
```