user: Please show me the C implementation that matches the assembly code listed below:

```asm
<pick_centroids_int32>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  mov    %esi,%ebp
  push   %rbx
  mov    %edx,%ebx
  sub    $0x28,%rsp
  mov    %rdi,0x8(%rsp)
  mov    %ecx,%edi
  imul   %edx,%edi
  mov    %ecx,0x10(%rsp)
  shl    $0x2,%edi
  call   <malloc@plt>
  mov    %ebp,%edi
  mov    %rax,%r13
  call   <stolen_random@plt>
  test   %ebx,%ebx
  mov    0x8(%rsp),%r8
  jle    L162
  imul   %ebx,%eax
  mov    %r13,%rsi
  movslq %eax,%rcx
  lea    0x4(,%rcx,4),%rax
  mov    %rcx,%rdx
  lea    (%r8,%rax,1),%rdi
  sub    %rdi,%rsi
  cmp    $0x8,%rsi
  jbe    L86
  lea    -0x1(%rbx),%esi
  cmp    $0x2,%esi
  jbe    L86
  mov    %ebx,%ecx
  lea    -0x4(%r8,%rax,1),%rsi
  xor    %eax,%eax
  shr    $0x2,%ecx
  shl    $0x4,%rcx
  nopl   0x0(%rax)
L3:
  movdqu (%rsi,%rax,1),%xmm1
  movups %xmm1,0x0(%r13,%rax,1)
  add    $0x10,%rax
  cmp    %rcx,%rax
  jne    L3
  mov    %ebx,%eax
  and    $0xfffffffc,%eax
  test   $0x3,%bl
  je     L162
  lea    (%rdx,%rax,1),%ecx
  mov    %eax,%edi
  movslq %ecx,%rcx
  lea    0x0(,%rdi,4),%rsi
  mov    (%r8,%rcx,4),%ecx
  mov    %ecx,0x0(%r13,%rdi,4)
  lea    0x1(%rax),%ecx
  cmp    %ecx,%ebx
  jle    L162
  add    %edx,%ecx
  add    $0x2,%eax
  movslq %ecx,%rcx
  mov    (%r8,%rcx,4),%ecx
  mov    %ecx,0x4(%r13,%rsi,1)
  cmp    %eax,%ebx
  jle    L162
  add    %edx,%eax
  cltq
  mov    (%r8,%rax,4),%eax
  mov    %eax,0x8(%r13,%rsi,1)
L162:
  cmpl   $0x1,0x10(%rsp)
  jle    L89
  mov    %ebx,%eax
  mov    %ebx,%ebp
  mov    $0x1,%r12d
  mov    %ebx,%r15d
  and    $0xfffffffc,%ebp
  shr    $0x2,%eax
  lea    -0x1(%rax),%r14d
  lea    0x1(%rbp),%eax
  mov    %ebp,0x14(%rsp)
  mov    %eax,0x18(%rsp)
  lea    0x2(%rbp),%eax
  add    $0x1,%r14
  mov    %r8,%rbp
  mov    %eax,0x1c(%rsp)
  lea    -0x1(%rbx),%eax
  shl    $0x4,%r14
  mov    %eax,0x8(%rsp)
  mov    %r13,%rax
  mov    %r14,%r13
  mov    %r12d,%r14d
  mov    %rax,%r12
  nopw   0x0(%rax,%rax,1)
L91:
  mov    $0xffffffff,%edi
  call   <stolen_random@plt>
  test   %ebx,%ebx
  jle    L149
  imul   %ebx,%eax
  movslq %r15d,%rdx
  lea    (%r12,%rdx,4),%rdx
  mov    %rdx,%r10
  movslq %eax,%rdi
  lea    0x4(,%rdi,4),%rsi
  lea    0x0(%rbp,%rsi,1),%r11
  sub    %r11,%r10
  cmp    $0x8,%r10
  jbe    L33
  cmpl   $0x2,0x8(%rsp)
  jbe    L33
  lea    -0x4(%rbp,%rsi,1),%rdi
  xor    %esi,%esi
  xchg   %ax,%ax
L147:
  movdqu (%rdi,%rsi,1),%xmm0
  movups %xmm0,(%rdx,%rsi,1)
  add    $0x10,%rsi
  cmp    %r13,%rsi
  jne    L147
  mov    0x14(%rsp),%ecx
  cmp    %ebx,%ecx
  je     L149
  lea    (%rax,%rcx,1),%edx
  mov    0x18(%rsp),%edi
  movslq %edx,%rdx
  mov    0x0(%rbp,%rdx,4),%esi
  lea    (%r15,%rcx,1),%edx
  movslq %edx,%rdx
  mov    %esi,(%r12,%rdx,4)
  cmp    %ebx,%edi
  jge    L149
  lea    (%rax,%rdi,1),%edx
  mov    0x1c(%rsp),%ecx
  movslq %edx,%rdx
  mov    0x0(%rbp,%rdx,4),%esi
  lea    (%rdi,%r15,1),%edx
  movslq %edx,%rdx
  mov    %esi,(%r12,%rdx,4)
  cmp    %ecx,%ebx
  jle    L149
  add    %ecx,%eax
  cltq
  mov    0x0(%rbp,%rax,4),%edx
  lea    (%r15,%rcx,1),%eax
  cltq
  mov    %edx,(%r12,%rax,4)
L149:
  add    $0x1,%r14d
  add    %ebx,%r15d
  cmp    %r14d,0x10(%rsp)
  jne    L91
  mov    %r12,%r13
L89:
  add    $0x28,%rsp
  mov    %r13,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   (%rax)
L33:
  mov    0x8(%rsp),%r10d
  lea    0x0(%rbp,%rdi,4),%rdi
  xor    %eax,%eax
  nopl   0x0(%rax)
L192:
  mov    (%rdi,%rax,4),%ecx
  mov    %ecx,(%rdx,%rax,4)
  mov    %rax,%rcx
  add    $0x1,%rax
  cmp    %rcx,%r10
  jne    L192
  jmp    L149
L86:
  mov    %ebx,%esi
  lea    (%r8,%rcx,4),%rcx
  xor    %eax,%eax
  nopl   0x0(%rax)
L18:
  mov    (%rcx,%rax,4),%edx
  mov    %edx,0x0(%r13,%rax,4)
  add    $0x1,%rax
  cmp    %rsi,%rax
  jne    L18
  jmp    L162
```

assistant: ```c
int32_t *pick_centroids_int32(int32_t *space, int points, int dim, int k) {
  int32_t *centroids = malloc(sizeof(int32_t) * k * dim);
  int random = stolen_random(points);
  for (int i = 0; i < dim; ++i)
    centroids[0 + i] = space[random * dim + i];
  for (int n = 1; n < k; ++n) {
    random = stolen_random(-1);
    for (int i = 0; i < dim; ++i)
      centroids[n * dim + i] = space[random * dim + i];
  }
  return centroids;
}
```