user: Demonstrate the C code that generates the assembly output below:

```asm
<stdlib_strided_snanvariancetk>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x48(%rbp)
  movss  %xmm0,-0x4c(%rbp)
  mov    %rsi,-0x58(%rbp)
  mov    %rdx,-0x60(%rbp)
  cmpq   $0x0,-0x48(%rbp)
  jg     L39
  pxor   %xmm0,%xmm0
  divss  %xmm0,%xmm0
  jmp    L121
L39:
  cmpq   $0x1,-0x48(%rbp)
  je     L79
  cmpq   $0x0,-0x60(%rbp)
  jne    L29
L79:
  mov    -0x58(%rbp),%rax
  movss  (%rax),%xmm0
  movss  %xmm0,-0x2c(%rbp)
  movss  -0x2c(%rbp),%xmm0
  ucomiss -0x2c(%rbp),%xmm0
  jp     L52
  pxor   %xmm0,%xmm0
  cvtsi2sdq -0x48(%rbp),%xmm0
  pxor   %xmm1,%xmm1
  cvtss2sd -0x4c(%rbp),%xmm1
  subsd  %xmm1,%xmm0
  pxor   %xmm1,%xmm1
  comisd %xmm1,%xmm0
  jbe    L52
  pxor   %xmm0,%xmm0
  jmp    L121
L52:
  pxor   %xmm0,%xmm0
  divss  %xmm0,%xmm0
  jmp    L121
L29:
  cmpq   $0x0,-0x60(%rbp)
  jns    L112
  mov    $0x1,%eax
  sub    -0x48(%rbp),%rax
  mov    -0x60(%rbp),%rdx
  imul   %rdx,%rax
  mov    %rax,-0x28(%rbp)
  jmp    L7
L112:
  movq   $0x0,-0x28(%rbp)
L7:
  pxor   %xmm0,%xmm0
  movss  %xmm0,-0x34(%rbp)
  pxor   %xmm0,%xmm0
  movss  %xmm0,-0x30(%rbp)
  movq   $0x0,-0x20(%rbp)
  movq   $0x0,-0x18(%rbp)
  jmp    L105
L97:
  mov    -0x28(%rbp),%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x58(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  movss  %xmm0,-0x2c(%rbp)
  movss  -0x2c(%rbp),%xmm0
  ucomiss -0x2c(%rbp),%xmm0
  jp     L13
  movss  -0x2c(%rbp),%xmm0
  mulss  %xmm0,%xmm0
  movss  -0x34(%rbp),%xmm1
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x34(%rbp)
  movss  -0x30(%rbp),%xmm0
  addss  -0x2c(%rbp),%xmm0
  movss  %xmm0,-0x30(%rbp)
  addq   $0x1,-0x20(%rbp)
L13:
  mov    -0x60(%rbp),%rax
  add    %rax,-0x28(%rbp)
  addq   $0x1,-0x18(%rbp)
L105:
  mov    -0x18(%rbp),%rax
  cmp    -0x48(%rbp),%rax
  jl     L97
  pxor   %xmm0,%xmm0
  cvtsi2sdq -0x20(%rbp),%xmm0
  movsd  %xmm0,-0x10(%rbp)
  pxor   %xmm1,%xmm1
  cvtss2sd -0x4c(%rbp),%xmm1
  movsd  -0x10(%rbp),%xmm0
  subsd  %xmm1,%xmm0
  movsd  %xmm0,-0x8(%rbp)
  pxor   %xmm0,%xmm0
  comisd -0x8(%rbp),%xmm0
  jb     L15
  pxor   %xmm0,%xmm0
  divss  %xmm0,%xmm0
  jmp    L121
L15:
  pxor   %xmm0,%xmm0
  cvtss2sd -0x30(%rbp),%xmm0
  divsd  -0x10(%rbp),%xmm0
  cvtsd2ss %xmm0,%xmm0
  movaps %xmm0,%xmm1
  mulss  -0x30(%rbp),%xmm1
  movss  -0x34(%rbp),%xmm0
  subss  %xmm1,%xmm0
  cvtss2sd %xmm0,%xmm0
  divsd  -0x8(%rbp),%xmm0
  cvtsd2ss %xmm0,%xmm0
L121:
  pop    %rbp
  ret
```

assistant: ```c
float stdlib_strided_snanvariancetk(const int64_t N, const float correction, const float *X, const int64_t stride) {
  int64_t ix;
  int64_t n;
  int64_t i;
  double nc;
  double dn;
  float S2;
  float S;
  float v;
  if (N <= 0) {
    return 0.0f / 0.0f;
  }
  if (N == 1 || stride == 0) {
    v = X[0];
    if (v == v && (double)N - (double)correction > 0.0) {
      return 0.0f;
    }
    return 0.0f / 0.0f;
  }
  if (stride < 0) {
    ix = (1 - N) * stride;
  } else {
    ix = 0;
  }
  S2 = 0.0f;
  S = 0.0f;
  n = 0;
  for (i = 0; i < N; i++) {
    v = X[ix];
    if (v == v) {
      S2 += v * v;
      S += v;
      n += 1;
    }
    ix += stride;
  }
  dn = (double)n;
  nc = dn - (double)correction;
  if (nc <= 0.0) {
    return 0.0f / 0.0f;
  }
  return (float)((double)(S2 - ((float)((double)S / dn) * S)) / nc);
}
```