user: 这段汇编代码用C语言表示是什么样的:

```asm
<qmf_decomp>:
  endbr64
  push   %r15
  mov    %rsi,%rax
  movslq %r9d,%rsi
  push   %r14
  push   %r13
  push   %r12
  mov    %rsi,%r12
  shl    $0x2,%rsi
  push   %rbp
  mov    %r12d,%r15d
  mov    %r8d,%ebp
  lea    -0x1(%r12),%r13d
  push   %rbx
  mov    %rdi,%rbx
  mov    0x40(%rsp),%rdi
  sar    %r15d
  mov    %rdx,-0x20(%rsp)
  mov    %rdi,%rdx
  neg    %rdx
  mov    %rcx,-0x18(%rsp)
  and    $0x3,%edx
  lea    (%rsi,%rdx,1),%r10
  lea    (%rdi,%rdx,1),%r14
  lea    (%rdi,%r10,1),%rdx
  mov    %rdx,%rcx
  neg    %rcx
  and    $0x3,%ecx
  lea    (%rdx,%rcx,1),%r11
  mov    %rcx,-0x30(%rsp)
  lea    -0x4(%rsi),%rcx
  mov    %rcx,-0x38(%rsp)
  add    %r11,%rcx
  mov    %rcx,-0x28(%rsp)
  test   %r12d,%r12d
  jle    L170
  mov    %r10,%rcx
  lea    (%rax,%rsi,1),%r8
  sub    %rsi,%rcx
  add    %rdi,%rcx
  cmp    %rcx,%r8
  setbe  %cl
  cmp    %rax,%rdx
  setbe  %dl
  or     %cl,%dl
  je     L112
  cmp    $0x2,%r13d
  jbe    L112
  mov    %r12d,%r8d
  mov    %rax,%rdx
  lea    -0x10(%rdi,%r10,1),%rcx
  shr    $0x2,%r8d
  sub    $0x1,%r8d
  shl    $0x4,%r8
  lea    0x10(%rax,%r8,1),%r8
  nopl   0x0(%rax,%rax,1)
L64:
  movups (%rdx),%xmm0
  add    $0x10,%rdx
  sub    $0x10,%rcx
  shufps $0x1b,%xmm0,%xmm0
  movups %xmm0,0x10(%rcx)
  cmp    %r8,%rdx
  jne    L64
  mov    %r12d,%edx
  and    $0xfffffffc,%edx
  test   $0x3,%r12b
  je     L348
  mov    %edx,%ecx
  lea    0x1(%rdx),%r8d
  movss  (%rax,%rcx,4),%xmm0
  lea    0x0(,%rcx,4),%r9
  mov    %r12d,%ecx
  sub    %edx,%ecx
  movslq %ecx,%rcx
  movss  %xmm0,-0x4(%r14,%rcx,4)
  cmp    %r8d,%r12d
  jle    L348
  mov    %r12d,%ecx
  movss  0x4(%rax,%r9,1),%xmm0
  add    $0x2,%edx
  sub    %r8d,%ecx
  movslq %ecx,%rcx
  movss  %xmm0,-0x4(%r14,%rcx,4)
  cmp    %edx,%r12d
  jle    L348
  movss  0x8(%rax,%r9,1),%xmm0
  mov    %r12d,%eax
  sub    %edx,%eax
  cltq
  movss  %xmm0,-0x4(%r14,%rax,4)
L348:
  mov    -0x30(%rsp),%rax
  mov    %r13d,%ecx
  mov    -0x38(%rsp),%r8
  lea    -0x2(%r12),%r9d
  shl    $0x2,%rcx
  add    %r10,%rax
  sub    %rcx,%r8
  add    0x38(%rsp),%r8
  lea    (%rdi,%rax,1),%rdx
  add    %rcx,%rax
  add    %rdi,%rax
  cmp    %r8,%rax
  mov    -0x38(%rsp),%rax
  setbe  %cl
  add    0x38(%rsp),%rax
  cmp    %rax,%rdx
  setae  %al
  or     %cl,%al
  mov    0x38(%rsp),%rax
  je     L290
  cmp    $0x2,%r9d
  jbe    L290
  mov    %r13d,%r8d
  lea    -0x14(%rax,%rsi,1),%rcx
  mov    %rdx,-0x10(%rsp)
  shr    $0x2,%r8d
  lea    -0x10(%rcx),%rax
  sub    $0x1,%r8d
  mov    %rax,%rdx
  shl    $0x4,%r8
  sub    %r8,%rdx
  mov    %rdx,%r8
  mov    -0x10(%rsp),%rdx
  jmp    L125
  nopl   0x0(%rax)
L140:
  sub    $0x10,%rax
L125:
  movups (%rcx),%xmm0
  add    $0x10,%rdx
  mov    %rax,%rcx
  shufps $0x1b,%xmm0,%xmm0
  movups %xmm0,-0x10(%rdx)
  cmp    %r8,%rax
  jne    L140
  mov    %r13d,%eax
  and    $0xfffffffc,%eax
  test   $0x3,%r13b
  je     L253
  movslq %eax,%rcx
  mov    0x38(%rsp),%r8
  lea    0x0(,%rcx,4),%rdx
  mov    %rdx,-0x10(%rsp)
  mov    %r12d,%edx
  sub    %eax,%edx
  movslq %edx,%rdx
  movss  -0x8(%r8,%rdx,4),%xmm0
  movss  %xmm0,(%r11,%rcx,4)
  lea    0x1(%rax),%ecx
  cmp    %ecx,%r13d
  jle    L253
  mov    %r12d,%edx
  add    $0x2,%eax
  sub    %ecx,%edx
  mov    -0x10(%rsp),%rcx
  movslq %edx,%rdx
  movss  -0x8(%r8,%rdx,4),%xmm0
  movss  %xmm0,0x4(%r11,%rcx,1)
  cmp    %eax,%r13d
  jle    L253
  mov    %r12d,%edx
  sub    %eax,%edx
  movslq %edx,%rdx
  movss  -0x8(%r8,%rdx,4),%xmm0
  movss  %xmm0,0x8(%r11,%rcx,1)
L253:
  test   %ebp,%ebp
  jle    L306
L277:
  mov    -0x38(%rsp),%rdx
  lea    0x4(%rbx),%rcx
  add    %r10,%rdx
  add    -0x30(%rsp),%rdx
  add    %rdi,%rdx
  mov    %rdx,%rax
  sub    %rcx,%rax
  cmp    $0x8,%rax
  jbe    L172
  lea    -0x1(%rbp),%eax
  cmp    $0x2,%eax
  jbe    L172
  mov    %ebp,%ecx
  xor    %eax,%eax
  shr    $0x2,%ecx
  shl    $0x4,%rcx
  nopl   (%rax)
L167:
  movups (%rbx,%rax,1),%xmm3
  movups %xmm3,(%rdx,%rax,1)
  add    $0x10,%rax
  cmp    %rax,%rcx
  jne    L167
  mov    %ebp,%eax
  and    $0xfffffffc,%eax
  test   $0x3,%bpl
  je     L132
  mov    %eax,%edx
  movss  (%rbx,%rdx,4),%xmm0
  lea    0x0(,%rdx,4),%rcx
  lea    (%r12,%rax,1),%edx
  movslq %edx,%rdx
  movss  %xmm0,-0x4(%r11,%rdx,4)
  lea    0x1(%rax),%edx
  cmp    %ebp,%edx
  jge    L132
  movss  0x4(%rbx,%rcx,1),%xmm0
  add    %r12d,%edx
  add    $0x2,%eax
  movslq %edx,%rdx
  movss  %xmm0,-0x4(%r11,%rdx,4)
  cmp    %eax,%ebp
  jle    L132
  movss  0x8(%rbx,%rcx,1),%xmm0
  add    %r12d,%eax
  cltq
  movss  %xmm0,-0x4(%r11,%rax,4)
L132:
  lea    -0x1(%r15),%eax
  mov    -0x20(%rsp),%rdi
  mov    -0x18(%rsp),%rsi
  xor    %r8d,%r8d
  shr    %eax
  mov    -0x28(%rsp),%r9
  lea    0xc(%r14,%rax,8),%r10
  nopl   0x0(%rax)
L183:
  movl   $0x0,(%rdi)
  movl   $0x0,(%rsi)
  test   %r15d,%r15d
  jle    L69
  lea    0x4(%r14),%rax
  mov    %r9,%rcx
  mov    %r11,%rdx
  nopl   0x0(%rax,%rax,1)
L85:
  movss  (%rdx),%xmm0
  addss  (%rcx),%xmm0
  add    $0x8,%rax
  add    $0x8,%rdx
  mulss  -0xc(%rax),%xmm0
  sub    $0x8,%rcx
  addss  (%rdi),%xmm0
  movss  %xmm0,(%rdi)
  movss  -0x8(%rdx),%xmm0
  subss  0x8(%rcx),%xmm0
  mulss  -0xc(%rax),%xmm0
  movss  (%rsi),%xmm1
  subss  %xmm0,%xmm1
  movss  %xmm1,(%rsi)
  movss  -0x4(%rdx),%xmm0
  addss  0x4(%rcx),%xmm0
  mulss  -0x8(%rax),%xmm0
  addss  (%rdi),%xmm0
  movss  %xmm0,(%rdi)
  movss  -0x4(%rdx),%xmm0
  subss  0x4(%rcx),%xmm0
  mulss  -0x8(%rax),%xmm0
  addss  (%rsi),%xmm0
  movss  %xmm0,(%rsi)
  cmp    %rax,%r10
  jne    L85
L69:
  add    $0x2,%r8d
  add    $0x4,%rdi
  add    $0x4,%rsi
  add    $0x8,%r11
  add    $0x8,%r9
  cmp    %r8d,%ebp
  jg     L183
  test   %r13d,%r13d
  jle    L256
  lea    -0x2(%r12),%r9d
L306:
  movslq %ebp,%rdx
  mov    %r13d,%eax
  shl    $0x2,%rdx
  shl    $0x2,%rax
  mov    %rdx,%rcx
  sub    %rax,%rcx
  add    0x38(%rsp),%rax
  add    %rbx,%rcx
  cmp    %rax,%rcx
  lea    (%rbx,%rdx,1),%rcx
  setae  %al
  cmp    %rcx,0x38(%rsp)
  setae  %cl
  or     %cl,%al
  je     L119
  cmp    $0x2,%r9d
  jbe    L119
  mov    %r13d,%ecx
  mov    0x38(%rsp),%rax
  lea    -0x10(%rbx,%rdx,1),%rdx
  shr    $0x2,%ecx
  sub    $0x1,%ecx
  shl    $0x4,%rcx
  lea    0x10(%rax,%rcx,1),%rcx
  xchg   %ax,%ax
L257:
  movups (%rdx),%xmm0
  add    $0x10,%rax
  sub    $0x10,%rdx
  shufps $0x1b,%xmm0,%xmm0
  movups %xmm0,-0x10(%rax)
  cmp    %rax,%rcx
  jne    L257
  mov    %r13d,%eax
  and    $0xfffffffc,%eax
  test   $0x3,%r13b
  je     L256
  mov    %ebp,%edx
  mov    0x38(%rsp),%rdi
  movslq %eax,%rcx
  sub    %eax,%edx
  lea    0x0(,%rcx,4),%rsi
  movslq %edx,%rdx
  movss  -0x4(%rbx,%rdx,4),%xmm0
  movss  %xmm0,(%rdi,%rcx,4)
  lea    0x1(%rax),%ecx
  cmp    %r13d,%ecx
  jge    L256
  mov    %ebp,%edx
  add    $0x2,%eax
  sub    %ecx,%edx
  movslq %edx,%rdx
  movss  -0x4(%rbx,%rdx,4),%xmm0
  movss  %xmm0,0x4(%rdi,%rsi,1)
  cmp    %r13d,%eax
  jge    L256
  sub    %eax,%ebp
  movslq %ebp,%rax
  movss  -0x4(%rbx,%rax,4),%xmm0
  movss  %xmm0,0x8(%rdi,%rsi,1)
L256:
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L112:
  mov    -0x38(%rsp),%rcx
  lea    (%r14,%rcx,1),%rdx
  mov    %r13d,%ecx
  lea    0x4(%rax,%rcx,4),%rcx
  cs nopw 0x0(%rax,%rax,1)
L367:
  movss  (%rax),%xmm0
  add    $0x4,%rax
  sub    $0x4,%rdx
  movss  %xmm0,0x4(%rdx)
  cmp    %rcx,%rax
  jne    L367
L170:
  test   %r13d,%r13d
  jg     L348
  test   %ebp,%ebp
  jg     L277
  jmp    L256
  nopl   0x0(%rax)
L172:
  mov    %ebp,%edx
  add    %r11,%rsi
  xor    %eax,%eax
  nopw   0x0(%rax,%rax,1)
L88:
  movss  (%rbx,%rax,4),%xmm0
  movss  %xmm0,-0x4(%rsi,%rax,4)
  add    $0x1,%rax
  cmp    %rax,%rdx
  jne    L88
  jmp    L132
L119:
  mov    0x38(%rsp),%rax
  mov    %r9d,%ecx
  lea    -0x4(%rbx,%rdx,1),%rdx
  lea    0x4(%rax,%rcx,4),%rcx
  nopl   0x0(%rax,%rax,1)
L292:
  movss  (%rdx),%xmm0
  add    $0x4,%rax
  sub    $0x4,%rdx
  movss  %xmm0,-0x4(%rax)
  cmp    %rax,%rcx
  jne    L292
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L290:
  mov    %r9d,%ecx
  lea    -0x8(%rax,%rsi,1),%rdx
  mov    %r11,%rax
  lea    0x4(%r11,%rcx,4),%rcx
  nopl   0x0(%rax)
L316:
  movss  (%rdx),%xmm0
  add    $0x4,%rax
  sub    $0x4,%rdx
  movss  %xmm0,-0x4(%rax)
  cmp    %rcx,%rax
  jne    L316
  jmp    L253
```

assistant: ```c
void qmf_decomp(float *xx, float *aa, float *y1, float *y2, int N, int M, float *mem, char *stack) {
  int i, j, k, M2;
  float *a;
  float *x;
  float *x2;
  a = ((((stack)) += ((sizeof(float)) - (int)((stack))) & ((sizeof(float)) - 1)), (stack) += ((M) * sizeof(float)), (float *)((stack) - ((M) * sizeof(float))));
  x = ((((stack)) += ((sizeof(float)) - (int)((stack))) & ((sizeof(float)) - 1)), (stack) += ((N + M - 1) * sizeof(float)), (float *)((stack) - ((N + M - 1) * sizeof(float))));
  x2 = x + M - 1;
  M2 = M >> 1;
  for (i = 0; i < M; i++)
    a[M - i - 1] = aa[i];
  for (i = 0; i < M - 1; i++)
    x[i] = mem[M - i - 2];
  for (i = 0; i < N; i++)
    x[i + M - 1] = xx[i];
  for (i = 0, k = 0; i < N; i += 2, k++) {
    y1[k] = 0;
    y2[k] = 0;
    for (j = 0; j < M2; j++) {
      y1[k] += a[j] * (x[i + j] + x2[i - j]);
      y2[k] -= a[j] * (x[i + j] - x2[i - j]);
      j++;
      y1[k] += a[j] * (x[i + j] + x2[i - j]);
      y2[k] += a[j] * (x[i + j] - x2[i - j]);
    }
  }
  for (i = 0; i < M - 1; i++)
    mem[i] = xx[N - i - 1];
}
```