user: 这段汇编代码用C语言表示是什么样的:

```asm
<dedisperse_blocked_cached>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0xa8,%rsp
  mov    %rdi,%r14
  mov    %rdi,0x98(%rsp)
  mov    %rsi,%r15
  mov    %rsi,0x50(%rsp)
  mov    %edx,%ebx
  mov    %ecx,0x18(%rsp)
  lea    0x3ff(%rcx),%eax
  test   %ecx,%ecx
  cmovns %ecx,%eax
  sar    $0xa,%eax
  mov    %eax,0x30(%rsp)
  mov    $0x80,%edi
  mov    $0x0,%eax
  call   <get_npass@plt>
  mov    %ebx,%edi
  mov    $0x0,%eax
  call   <get_npass@plt>
  lea    0x7f(%rbx),%eax
  test   %ebx,%ebx
  mov    %ebx,%ebp
  cmovns %ebx,%eax
  sar    $0x7,%eax
  mov    %eax,0x3c(%rsp)
  mov    %eax,%edx
  mov    %eax,0x48(%rsp)
  mov    %ebx,0x38(%rsp)
  mov    %ebx,%eax
  mov    %edx,%ecx
  cltd
  idiv   %ecx
  mov    %eax,0x90(%rsp)
  mov    $0x480,%esi
  mov    $0x80,%edi
  mov    $0x0,%eax
  call   <matrix@plt>
  mov    %eax,%ebx
  movslq %eax,%rdx
  mov    %rdx,0x20(%rsp)
  mov    $0x480,%esi
  mov    $0x80,%edi
  mov    $0x0,%eax
  call   <matrix@plt>
  movslq %eax,%rdx
  mov    %rdx,0x28(%rsp)
  cmp    $0x7f,%ebp
  jle    L143
  movslq %ebx,%rax
  mov    %rax,0x10(%rsp)
  sub    %rax,%r15
  sub    %rax,%r14
  movl   $0x0,0x40(%rsp)
  lea    0x400(%rax),%rbp
  jmp    L140
L237:
  sub    %esi,%eax
  movslq %eax,%r13
  shl    $0x2,%r13
  mov    0x8(%rsp),%r12
  shl    $0xc,%r12
  mov    0x10(%rsp),%rbx
L209:
  mov    (%rbx),%rdi
  mov    %r12,%rsi
  add    (%r14,%rbx,1),%rsi
  mov    %r13,%rdx
  call   <memcpy@plt>
  add    $0x8,%rbx
  cmp    %rbp,%rbx
  jne    L209
  mov    $0x480,%ecx
  mov    $0x80,%edx
  mov    0x28(%rsp),%rsi
  mov    0x20(%rsp),%rdi
  mov    $0x0,%eax
  call   <dedisperse@plt>
  mov    0x10(%rsp),%rax
L242:
  mov    %r12,%rcx
  add    (%r15,%rax,1),%rcx
  mov    (%rax),%rsi
  mov    (%rsi),%rdx
  mov    %rdx,(%rcx)
  mov    0xff8(%rsi),%rdx
  mov    %rdx,0xff8(%rcx)
  lea    0x8(%rcx),%rdi
  and    $0xfffffffffffffff8,%rdi
  sub    %rdi,%rcx
  sub    %rcx,%rsi
  add    $0x1000,%ecx
  shr    $0x3,%ecx
  mov    %ecx,%ecx
  rep movsq %ds:(%rsi),%es:(%rdi)
  add    $0x8,%rax
  cmp    %rbp,%rax
  jne    L242
  addq   $0x1,0x8(%rsp)
  mov    0x8(%rsp),%rax
  addl   $0x400,0x1c(%rsp)
  cmp    %eax,0x30(%rsp)
  jle    L235
L144:
  mov    0x8(%rsp),%esi
  shl    $0xa,%esi
  mov    0x1c(%rsp),%ebx
  mov    %ebx,%eax
  cmp    %ebx,0x18(%rsp)
  jge    L237
  mov    0x10(%rsp),%rdx
  mov    $0x0,%eax
L142:
  mov    (%rdx),%rcx
  movq   $0x0,0x1000(%rcx)
  movq   $0x0,0x11f8(%rcx)
  lea    0x1008(%rcx),%rdi
  and    $0xfffffffffffffff8,%rdi
  sub    %edi,%ecx
  lea    0x1200(%rcx),%ecx
  shr    $0x3,%ecx
  mov    %ecx,%ecx
  rep stos %rax,%es:(%rdi)
  add    $0x8,%rdx
  cmp    %rbp,%rdx
  jne    L142
  mov    0x18(%rsp),%eax
  jmp    L237
L235:
  addl   $0x1,0x40(%rsp)
  mov    0x40(%rsp),%eax
  add    $0x400,%r15
  add    $0x400,%r14
  cmp    %eax,0x3c(%rsp)
  jle    L167
L140:
  movl   $0x480,0x1c(%rsp)
  movq   $0x0,0x8(%rsp)
  cmpl   $0x3ff,0x18(%rsp)
  jg     L144
  jmp    L235
L10:
  cmpl   $0x7f,0x38(%rsp)
  jle    L171
  mov    0x30(%rsp),%rbp
  mov    $0x0,%ebx
  mov    0x10(%rsp),%r15
  mov    %r13,0x70(%rsp)
  mov    0x78(%rsp),%r13
L48:
  mov    %r15,%rdi
  add    0x0(%rbp),%rdi
  mov    %r13,%rdx
  mov    $0x0,%esi
  call   <memset@plt>
  add    $0x1,%ebx
  add    $0x8,%rbp
  cmp    %ebx,%r12d
  jg     L48
  mov    0x70(%rsp),%r13
  mov    0x18(%rsp),%eax
L154:
  sub    %r14d,%eax
  movslq %eax,%r14
  shl    $0x2,%r14
  mov    0x30(%rsp),%rbx
  mov    $0x0,%ebp
  mov    0x60(%rsp),%r15
L236:
  mov    (%rbx),%rdi
  mov    %r13,%rsi
  add    (%r15,%rbx,1),%rsi
  mov    %r14,%rdx
  call   <memcpy@plt>
  add    $0x1,%ebp
  add    $0x8,%rbx
  cmp    %ebp,%r12d
  jg     L236
  mov    0x3c(%rsp),%ecx
  mov    %r12d,%edx
  mov    0x48(%rsp),%rsi
  mov    0x40(%rsp),%rdi
  mov    $0x0,%eax
  call   <dedisperse@plt>
  mov    0x58(%rsp),%rbx
  mov    $0x0,%ebp
  mov    0x10(%rsp),%r14
  mov    0x68(%rsp),%r15
L8:
  mov    %r13,%rdi
  add    (%r15,%rbx,1),%rdi
  mov    (%rbx),%rsi
  mov    %r14,%rdx
  call   <memcpy@plt>
  add    $0x1,%ebp
  add    $0x8,%rbx
  cmp    %ebp,%r12d
  jg     L8
L217:
  mov    0x20(%rsp),%ebx
  add    %ebx,0x1c(%rsp)
  add    0x10(%rsp),%r13
  mov    0x28(%rsp),%ebx
  cmp    %ebx,0x8(%rsp)
  je     L15
L211:
  mov    0x1c(%rsp),%eax
  mov    %eax,%r14d
  sub    0x50(%rsp),%r14d
  addl   $0x1,0x8(%rsp)
  cmp    %eax,0x18(%rsp)
  jl     L10
  cmpl   $0x7f,0x38(%rsp)
  jg     L154
L171:
  mov    0x3c(%rsp),%ecx
  mov    %r12d,%edx
  mov    0x48(%rsp),%rsi
  mov    0x40(%rsp),%rdi
  mov    $0x0,%eax
  call   <dedisperse@plt>
  jmp    L217
L15:
  addl   $0x1,0x88(%rsp)
  mov    0x88(%rsp),%eax
  add    %r12d,0x8c(%rsp)
  cmp    %eax,0x90(%rsp)
  je     L224
L74:
  cmpl   $0x0,0x28(%rsp)
  jle    L15
  mov    0x3c(%rsp),%eax
  mov    %eax,0x1c(%rsp)
  movslq 0x8c(%rsp),%rax
  shl    $0x3,%rax
  mov    %rax,%rdx
  sub    0x30(%rsp),%rdx
  add    0x80(%rsp),%rdx
  mov    %rdx,0x60(%rsp)
  movslq 0x94(%rsp),%rbx
  mov    %rbx,0x58(%rsp)
  sub    %rbx,%rax
  mov    0x98(%rsp),%rbx
  lea    (%rbx,%rax,1),%r15
  mov    $0x0,%r13d
  movl   $0x0,0x8(%rsp)
  mov    0x20(%rsp),%eax
  add    %r12d,%eax
  mov    %eax,0x50(%rsp)
  mov    %r15,0x68(%rsp)
  jmp    L211
L224:
  mov    0x40(%rsp),%rbx
  mov    (%rbx),%rdi
  call   <free@plt>
  mov    %rbx,%rdi
  call   <free@plt>
  mov    0x48(%rsp),%rbx
  mov    (%rbx),%rdi
  call   <free@plt>
  mov    %rbx,%rdi
  call   <free@plt>
  add    $0xa8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L167:
  mov    0x20(%rsp),%rbx
  mov    (%rbx),%rdi
  call   <free@plt>
  mov    %rbx,%rdi
  call   <free@plt>
  mov    0x28(%rsp),%rbx
  mov    (%rbx),%rdi
  call   <free@plt>
  mov    %rbx,%rdi
  call   <free@plt>
  movslq 0x38(%rsp),%rdi
  shl    $0x3,%rdi
  call   <malloc@plt>
  mov    %rax,0x80(%rsp)
  mov    %rax,%r10
  mov    0x50(%rsp),%rdi
  add    $0x400,%rdi
  movslq 0x3c(%rsp),%r8
  shl    $0x3,%r8
  mov    $0x0,%r11d
L55:
  lea    -0x400(%rdi),%rax
  lea    0x0(,%r11,4),%r9
  mov    %r10,%rcx
  mov    $0x0,%edx
L175:
  mov    %rdx,%rsi
  add    (%rax),%rsi
  mov    %rsi,(%rcx)
  add    $0x8,%rax
  add    %r9,%rdx
  add    %r8,%rcx
  cmp    %rdi,%rax
  jne    L175
  add    $0x1,%r11
  add    $0x8,%r10
  add    $0x400,%rdi
  cmp    %r11d,0x3c(%rsp)
  jg     L55
L121:
  mov    $0x20000,%eax
  cltd
  idivl  0x48(%rsp)
  mov    %eax,0x20(%rsp)
  mov    0x18(%rsp),%eax
  mov    0x20(%rsp),%r14d
  cltd
  idiv   %r14d
  mov    %eax,0x28(%rsp)
  mov    0x3c(%rsp),%ebx
  mov    %ebx,%r12d
  add    %r14d,%r12d
  mov    %r12d,%r15d
  mov    %r12d,0x3c(%rsp)
  mov    %r12d,%esi
  mov    %ebx,%r12d
  mov    %ebx,%edi
  mov    $0x0,%eax
  call   <matrix@plt>
  mov    %eax,%ebx
  cltq
  mov    %rax,0x40(%rsp)
  mov    %r15d,%esi
  mov    %r12d,%edi
  mov    $0x0,%eax
  call   <matrix@plt>
  mov    %eax,0x94(%rsp)
  cltq
  mov    %rax,0x48(%rsp)
  cmpl   $0x0,0x90(%rsp)
  jle    L224
  movslq %r12d,%rax
  shl    $0x2,%rax
  mov    %rax,0x78(%rsp)
  mov    %r14d,%eax
  cltq
  shl    $0x2,%rax
  mov    %rax,0x10(%rsp)
  movl   $0x0,0x8c(%rsp)
  movl   $0x0,0x88(%rsp)
  movslq %ebx,%rax
  mov    %rax,0x30(%rsp)
  jmp    L74
L143:
  mov    0x20(%rsp),%rbx
  mov    (%rbx),%rdi
  call   <free@plt>
  mov    %rbx,%rdi
  call   <free@plt>
  mov    0x28(%rsp),%rbx
  mov    (%rbx),%rdi
  call   <free@plt>
  mov    %rbx,%rdi
  call   <free@plt>
  movslq 0x38(%rsp),%rdi
  shl    $0x3,%rdi
  call   <malloc@plt>
  mov    %rax,0x80(%rsp)
  jmp    L121
```

assistant: ```c
void dedisperse_blocked_cached(float **dat, float **dat2, int nchan, int ndat) {
  int nchan1 = 128;
  int chunk_size = 1024;
  int nchunk = ndat / chunk_size;
  int npass1 = get_npass(nchan1);
  int npass = get_npass(nchan);
  int npass2 = npass - npass1;
  int nchan2 = nchan / nchan1;
  int nblock = nchan / nchan1;
  int nblock2 = nchan / nchan2;
#pragma omp parallel
  {
    float **tmp1 = matrix(nchan1, chunk_size + nchan1);
    float **tmp2 = matrix(nchan1, chunk_size + nchan1);
#pragma omp for collapse(2) schedule(dynamic, 2)
    for (int i = 0; i < nblock; i++) {
      for (int j = 0; j < nchunk; j++) {
        int istart = j * chunk_size;
        int istop = (j + 1) * chunk_size + nchan1;
        if (istop > ndat) {
          istop = ndat;
          for (int k = 0; k < nchan1; k++)
            memset(tmp1[k] + chunk_size, 0, sizeof(float) * nchan1);
        }
        for (int k = 0; k < nchan1; k++)
          memcpy(tmp1[k], &(dat[i * nchan1 + k][istart]), (istop - istart) * sizeof(float));
        dedisperse(tmp1, tmp2, nchan1, chunk_size + nchan1);
        for (int k = 0; k < nchan1; k++)
          memcpy(&(dat2[i * nchan1 + k][istart]), tmp1[k], chunk_size * sizeof(float));
      }
    }
    free(tmp1[0]);
    free(tmp1);
    free(tmp2[0]);
    free(tmp2);
  }
  float **dat_shift = (float **)malloc(sizeof(float *) * nchan);
  for (int i = 0; i < nblock; i++)
    for (int j = 0; j < nchan1; j++)
      dat_shift[j * nblock + i] = dat2[i * nchan1 + j] + i * j;
  int nelem = nchan1 * chunk_size;
  chunk_size = nelem / nchan2;
  nchunk = ndat / chunk_size;
#pragma omp parallel
  {
    float **tmp1 = matrix(nchan2, chunk_size + nchan2);
    float **tmp2 = matrix(nchan2, chunk_size + nchan2);
#pragma omp for collapse(2) schedule(dynamic, 4)
    for (int i = 0; i < nblock2; i++) {
      for (int j = 0; j < nchunk; j++) {
        int istart = j * chunk_size;
        int istop = (j + 1) * chunk_size + nchan2;
        if (istop > ndat) {
          istop = ndat;
          for (int k = 0; k < nchan2; k++)
            memset(tmp1[k] + chunk_size, 0, sizeof(float) * nchan2);
        }
        for (int k = 0; k < nchan2; k++) {
          memcpy(tmp1[k], dat_shift[i * nchan2 + k] + istart, (istop - istart) * sizeof(float));
        }
        dedisperse(tmp1, tmp2, nchan2, chunk_size + nchan2);
        for (int k = 0; k < nchan2; k++)
          memcpy(dat[i * nchan2 + k] + istart, tmp2[k], chunk_size * sizeof(float));
      }
    }
    free(tmp1[0]);
    free(tmp1);
    free(tmp2[0]);
    free(tmp2);
  }
}
```