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

```asm
<weiszfeld_test_optimum>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %edi,-0x24(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    %rdx,-0x38(%rbp)
  mov    %rcx,-0x40(%rbp)
  mov    %r8d,-0x28(%rbp)
  pxor   %xmm0,%xmm0
  movss  %xmm0,-0x14(%rbp)
  pxor   %xmm0,%xmm0
  movss  %xmm0,-0x10(%rbp)
  movl   $0x0,-0xc(%rbp)
  jmp    L59
L5:
  mov    -0xc(%rbp),%eax
  cmp    -0x28(%rbp),%eax
  je     L38
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm2
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm1
  mov    -0x28(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  mov    -0x28(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  movaps %xmm2,%xmm3
  movaps %xmm1,%xmm2
  movaps %xmm0,%xmm1
  movd   %eax,%xmm0
  call   <distance_s@plt>
  movd   %xmm0,%eax
  mov    %eax,-0x4(%rbp)
  pxor   %xmm0,%xmm0
  ucomiss -0x4(%rbp),%xmm0
  jp     L28
  pxor   %xmm0,%xmm0
  ucomiss -0x4(%rbp),%xmm0
  je     L8
L28:
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm1
  mov    -0x28(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm2
  subss  %xmm2,%xmm0
  divss  -0x4(%rbp),%xmm0
  mulss  %xmm1,%xmm0
  movss  -0x14(%rbp),%xmm1
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x14(%rbp)
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm1
  mov    -0x28(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm2
  subss  %xmm2,%xmm0
  divss  -0x4(%rbp),%xmm0
  mulss  %xmm1,%xmm0
  movss  -0x10(%rbp),%xmm1
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x10(%rbp)
  jmp    L38
L8:
  nop
L38:
  addl   $0x1,-0xc(%rbp)
L59:
  mov    -0xc(%rbp),%eax
  cmp    -0x24(%rbp),%eax
  jl     L5
  movss  -0x14(%rbp),%xmm0
  movaps %xmm0,%xmm1
  mulss  %xmm0,%xmm1
  movss  -0x10(%rbp),%xmm0
  mulss  %xmm0,%xmm0
  addss  %xmm0,%xmm1
  movd   %xmm1,%eax
  movd   %eax,%xmm0
  call   <sqrtf@plt>
  movd   %xmm0,%eax
  mov    %eax,-0x8(%rbp)
  mov    -0x28(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  comiss -0x8(%rbp),%xmm0
  jb     L10
  mov    -0x28(%rbp),%eax
  jmp    L75
L10:
  mov    $0xffffffff,%eax
L75:
  leave
  ret
```

assistant: ```c
int __attribute__((__always___, __gnu___, __nonnull__, __pure__, __artificial__)) weiszfeld_test_optimum(const int count, const float *restrict ptsx, const float *restrict ptsy, const float *restrict weights, const int i) {
  float sumx = 0;
  float sumy = 0;
  for (int m = 0; m < count; m++) {
    if (m != i) {
      const float dist = distance_s(ptsx[i], ptsy[i], ptsx[m], ptsy[m]);
      if (dist == 0.0f)
        continue;
      sumx += weights[m] * ((ptsx[i] - ptsx[m]) / dist);
      sumy += weights[m] * ((ptsy[i] - ptsy[m]) / dist);
    }
  }
  const float result = sqrtf((sumx * sumx) + (sumy * sumy));
  return (result <= weights[i]) ? i : -1;
}
```