user: 这段汇编代码用C语言表示是什么样的：

```asm
<rchold>:
  endbr64
  push   %r15
  movslq %esi,%rax
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x78,%rsp
  mov    %eax,0x40(%rsp)
  mov    %edx,0x44(%rsp)
  cmp    $0x1,%eax
  je     L14
  mov    %rdi,%r14
  movslq %edx,%rdi
  mov    %eax,0xc(%rsp)
  mov    0x40(%rsp),%ebx
  mov    %rdi,0x58(%rsp)
  add    $0x1,%rdi
  mov    %rcx,%r15
  mov    %rdi,0x30(%rsp)
  shl    $0x2,%rdi
  mov    %rax,0x18(%rsp)
  lea    -0x4(%rdi),%rax
  mov    %rax,0x38(%rsp)
  lea    0x1(%rdx),%eax
  mov    %eax,0x64(%rsp)
  cltq
  shl    $0x2,%rax
  mov    %rdi,0x50(%rsp)
  mov    %rax,0x68(%rsp)
  lea    0x4(%rcx),%rax
  mov    %rax,0x48(%rsp)
  nopw   0x0(%rax,%rax,1)
L34:
  lea    0x4(%r14),%rdi
  cmpl   $0x1,0xc(%rsp)
  movss  (%r14),%xmm2
  lea    -0x1(%rbx),%r13d
  mov    %rdi,0x20(%rsp)
  jle    L115
  lea    -0x2(%rbx),%eax
  cmp    $0x2,%eax
  jbe    L4
  mov    %r13d,%eax
  movaps %xmm2,%xmm1
  shr    $0x2,%eax
  shufps $0x0,%xmm1,%xmm1
  sub    $0x1,%eax
  shl    $0x4,%rax
  lea    0x14(%r14,%rax,1),%rdx
  mov    %rdi,%rax
  nopl   (%rax)
L147:
  movups (%rax),%xmm0
  add    $0x10,%rax
  divps  %xmm1,%xmm0
  movups %xmm0,-0x10(%rax)
  cmp    %rax,%rdx
  jne    L147
  mov    %r13d,%edx
  and    $0xfffffffc,%edx
  lea    0x1(%rdx),%eax
  cmp    %r13d,%edx
  je     L49
L108:
  movslq %eax,%rdx
  mov    0xc(%rsp),%ebx
  shl    $0x2,%rdx
  lea    (%r14,%rdx,1),%rcx
  movss  (%rcx),%xmm0
  divss  %xmm2,%xmm0
  movss  %xmm0,(%rcx)
  lea    0x1(%rax),%ecx
  cmp    %ebx,%ecx
  jge    L49
  lea    0x4(%r14,%rdx,1),%rcx
  add    $0x2,%eax
  movss  (%rcx),%xmm0
  divss  %xmm2,%xmm0
  movss  %xmm0,(%rcx)
  cmp    %ebx,%eax
  jge    L49
  lea    0x8(%r14,%rdx,1),%rax
  movss  (%rax),%xmm0
  divss  %xmm2,%xmm0
  movss  %xmm0,(%rax)
L49:
  mov    0x20(%rsp),%rdi
  mov    %r15,%rdx
  mov    %r13d,%r9d
  mov    %r13d,%ecx
  mov    $0x1,%r8d
  movss  %xmm2,(%rsp)
  mov    %rdi,%rsi
  call   <mmult@plt>
  movss  (%rsp),%xmm2
  mov    %r13d,%edx
  mov    %r13d,%esi
  mov    %r15,%rdi
  movaps %xmm2,%xmm0
  call   <scale@plt>
L166:
  mov    0x68(%rsp),%rax
  mov    %r15,0x10(%rsp)
  xor    %ebp,%ebp
  xor    %r10d,%r10d
  movq   $0x0,(%rsp)
  mov    0x58(%rsp),%r12
  xor    %r9d,%r9d
  lea    (%r14,%rax,1),%rbx
  mov    0x18(%rsp),%rax
  mov    0x64(%rsp),%r11d
  lea    -0x4(,%rax,4),%rax
  mov    %rax,0x28(%rsp)
  mov    0xc(%rsp),%eax
  sub    $0x2,%eax
  mov    %eax,0x60(%rsp)
L54:
  mov    0x20(%rsp),%rax
  lea    0x0(,%rbp,4),%r8
  mov    %r9d,%edx
  mov    (%rsp),%edi
  add    $0x1,%r9d
  lea    (%rax,%r12,4),%rcx
  mov    0x48(%rsp),%rax
  lea    (%rax,%r8,1),%rsi
  mov    %rcx,%rax
  sub    %rsi,%rax
  cmp    $0x8,%rax
  jbe    L80
  mov    0xc(%rsp),%eax
  sub    %edi,%eax
  cmp    $0x2,%eax
  setne  %sil
  cmp    0xc(%rsp),%r9d
  setl   %al
  test   %al,%sil
  je     L80
  mov    0xc(%rsp),%esi
  mov    $0x1,%eax
  sub    %r9d,%esi
  cmp    %r9d,0x40(%rsp)
  cmovle %eax,%esi
  mov    0x60(%rsp),%eax
  sub    %edi,%eax
  cmp    $0x2,%eax
  jbe    L135
  mov    %esi,%edi
  add    %r15,%r8
  xor    %eax,%eax
  shr    $0x2,%edi
  shl    $0x4,%rdi
  nopl   0x0(%rax,%rax,1)
L21:
  movups (%rcx,%rax,1),%xmm0
  movups (%r8,%rax,1),%xmm3
  subps  %xmm3,%xmm0
  movups %xmm0,(%rcx,%rax,1)
  add    $0x10,%rax
  cmp    %rdi,%rax
  jne    L21
  mov    %esi,%eax
  and    $0xfffffffc,%eax
  add    %eax,%edx
  cmp    %eax,%esi
  je     L157
L187:
  sub    %eax,%esi
  cmp    $0x1,%esi
  je     L0
  lea    0x1(%r12,%rax,1),%rcx
  add    %rbp,%rax
  lea    (%r14,%rcx,4),%rcx
  movq   (%r15,%rax,4),%xmm1
  mov    %esi,%eax
  movq   (%rcx),%xmm0
  and    $0xfffffffe,%eax
  add    %eax,%edx
  subps  %xmm1,%xmm0
  movlps %xmm0,(%rcx)
  cmp    %eax,%esi
  je     L157
L0:
  lea    (%r11,%rdx,1),%eax
  add    %r10d,%edx
  cltq
  movslq %edx,%rdx
  lea    (%r14,%rax,4),%rax
  movss  (%rax),%xmm0
  subss  (%r15,%rdx,4),%xmm0
  movss  %xmm0,(%rax)
L157:
  mov    0x28(%rsp),%rdi
  addq   $0x1,(%rsp)
  add    %r13d,%r10d
  add    %rdi,0x10(%rsp)
  add    0x44(%rsp),%r11d
  add    0x38(%rsp),%rbx
  add    0x30(%rsp),%r12
  add    0x18(%rsp),%rbp
  cmp    %r13d,%r9d
  jl     L54
  subl   $0x1,0xc(%rsp)
  add    0x50(%rsp),%r14
  subq   $0x1,0x18(%rsp)
  cmp    $0x1,%r13d
  je     L14
L209:
  mov    %r13d,0x40(%rsp)
  mov    %r13d,%ebx
  jmp    L34
  nopw   0x0(%rax,%rax,1)
L80:
  mov    (%rsp),%rax
  mov    0x10(%rsp),%rdx
  nopl   0x0(%rax)
L37:
  movss  (%rbx,%rax,4),%xmm0
  subss  (%rdx,%rax,4),%xmm0
  movss  %xmm0,(%rbx,%rax,4)
  add    $0x1,%rax
  cmp    %eax,%r13d
  jg     L37
  jmp    L157
L135:
  xor    %eax,%eax
  jmp    L187
L14:
  add    $0x78,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L115:
  mov    %rdi,%rsi
  mov    %r15,%rdx
  mov    %r13d,%r9d
  mov    $0x1,%r8d
  mov    %r13d,%ecx
  movss  %xmm2,(%rsp)
  call   <mmult@plt>
  movss  (%rsp),%xmm2
  mov    %r13d,%edx
  mov    %r13d,%esi
  mov    %r15,%rdi
  movaps %xmm2,%xmm0
  call   <scale@plt>
  test   %r13d,%r13d
  jg     L166
  subl   $0x1,0xc(%rsp)
  add    0x50(%rsp),%r14
  subq   $0x1,0x18(%rsp)
  jmp    L209
L4:
  mov    $0x1,%eax
  jmp    L108
```

assistant: ```c
void rchold(float *A, int N, int stride, float *U22) {
  int j, i, u, w;
  float d1;
  if (N == 1) {
    return;
  } else {
    d1 = A[0];
    for (j = 1; j < N; ++j) {
      A[j] /= d1;
    }
    mmult(A + 1, A + 1, U22, N - 1, 1, N - 1);
    scale(U22, N - 1, N - 1, d1);
    for (i = 0; i < N - 1; ++i) {
      u = stride + 1 + i * stride;
      w = i * (N - 1);
      for (j = i; j < N - 1; j++) {
        A[j + u] -= U22[j + w];
      }
    }
    rchold(A + stride + 1, N - 1, stride, U22);
  }
}
```