user: 请从给定的汇编指令推导出C源代码：

```asm
<cxpose>:
  endbr64
  push   %r15
  mov    %esi,%eax
  lea    (%rsi,%rsi,1),%r10d
  shl    $0x2,%esi
  push   %r14
  shl    $0x3,%eax
  test   %r8d,%r8d
  push   %r13
  mov    %r9d,%r13d
  push   %r12
  mov    %ecx,%r12d
  push   %rbp
  push   %rbx
  mov    %rdi,%rbx
  mov    %r9d,-0x4(%rsp)
  lea    0x3(%r8),%r9d
  cmovns %r8d,%r9d
  mov    %ecx,-0x8(%rsp)
  lea    (%r10,%rsi,1),%ecx
  mov    %rdx,-0x20(%rsp)
  mov    %r9d,%r15d
  mov    %r8d,-0x24(%rsp)
  sar    $0x2,%r15d
  mov    %r10d,-0xc(%rsp)
  mov    %r15d,-0x10(%rsp)
  cmp    $0x3,%r8d
  jle    L39
  lea    0x1(%r10),%r8d
  mov    %rdx,%r14
  lea    0x1(%rcx),%edx
  cltq
  lea    0x1(%rsi),%edi
  movslq %r8d,%r8
  movslq %edx,%rdx
  movslq %r10d,%rbp
  lea    (%r12,%r12,1),%r11d
  movslq %edi,%rdi
  movslq %ecx,%rcx
  movslq %esi,%rsi
  lea    0x0(,%r8,4),%r10
  movslq %r11d,%r11
  mov    %rbx,-0x18(%rsp)
  lea    0x0(,%rdx,4),%r8
  lea    0x0(,%rax,4),%r12
  mov    %r13d,%edx
  lea    -0x1(%r13),%eax
  shl    $0x2,%rbp
  lea    0x0(,%rdi,4),%r9
  shl    $0x2,%rsi
  mov    %rbx,%r13
  shl    $0x2,%r11
  lea    0x0(,%rcx,4),%rdi
  lea    0x8(%rbx,%rax,8),%rcx
  mov    %edx,%ebx
  nopw   0x0(%rax,%rax,1)
L43:
  mov    %r14,%rdx
  mov    %r13,%rax
  test   %ebx,%ebx
  jle    L58
  nopw   0x0(%rax,%rax,1)
L4:
  movss  (%rax),%xmm7
  movss  0x4(%rax),%xmm6
  add    $0x8,%rax
  movss  -0x8(%rax,%rbp,1),%xmm5
  movss  -0x8(%rax,%r10,1),%xmm4
  movss  -0x8(%rax,%rsi,1),%xmm3
  movss  -0x8(%rax,%r9,1),%xmm2
  movss  -0x8(%rax,%rdi,1),%xmm1
  movss  -0x8(%rax,%r8,1),%xmm0
  movss  %xmm7,(%rdx)
  movss  %xmm6,0x4(%rdx)
  movss  %xmm5,0x8(%rdx)
  movss  %xmm4,0xc(%rdx)
  movss  %xmm3,0x10(%rdx)
  movss  %xmm2,0x14(%rdx)
  movss  %xmm1,0x18(%rdx)
  movss  %xmm0,0x1c(%rdx)
  add    %r11,%rdx
  cmp    %rcx,%rax
  jne    L4
L58:
  add    %r12,%r13
  add    $0x20,%r14
  add    %r12,%rcx
  sub    $0x1,%r15d
  jne    L43
  mov    -0x10(%rsp),%eax
  mov    -0x24(%rsp),%edi
  mov    $0x1,%edx
  mov    -0x18(%rsp),%rbx
  sub    $0x1,%eax
  add    $0x1,%rax
  cmp    $0x3,%edi
  cmovg  %rax,%rdx
  shl    $0x5,%rax
  imul   %r12,%rdx
  add    %rdx,%rbx
  cmp    $0x3,%edi
  mov    $0x20,%edx
  cmovle %rdx,%rax
  add    %rax,-0x20(%rsp)
L39:
  mov    -0x24(%rsp),%edi
  test   $0x3,%dil
  je     L86
  mov    -0x4(%rsp),%edx
  test   %edx,%edx
  jle    L86
  mov    %edi,%eax
  mov    -0x8(%rsp),%r8d
  mov    -0x20(%rsp),%r10
  sar    $0x1f,%eax
  movslq -0xc(%rsp),%rsi
  shr    $0x1e,%eax
  add    %r8d,%r8d
  add    %eax,%edi
  movslq %r8d,%r8
  shl    $0x2,%rsi
  and    $0x3,%edi
  shl    $0x2,%r8
  sub    %eax,%edi
  lea    -0x1(%rdi),%eax
  lea    0x8(%r10,%rax,8),%rcx
  movslq %edx,%rax
  lea    (%rbx,%rax,8),%r9
  nopl   0x0(%rax)
L81:
  test   %edi,%edi
  jle    L89
  mov    %r10,%rax
  mov    %rbx,%rdx
L14:
  movss  (%rdx),%xmm1
  movss  0x4(%rdx),%xmm0
  add    $0x8,%rax
  add    %rsi,%rdx
  movss  %xmm1,-0x8(%rax)
  movss  %xmm0,-0x4(%rax)
  cmp    %rcx,%rax
  jne    L14
L89:
  add    $0x8,%rbx
  add    %r8,%r10
  add    %r8,%rcx
  cmp    %r9,%rbx
  jne    L81
L86:
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
```

assistant: ```c
void cxpose(float *indata, int iRsiz, float *outdata, int oRsiz, int Nrows, int Ncols) {
  float *irow;
  float *ocol;
  float *idata;
  float *odata;
  int RowCnt;
  int ColCnt;
  float T0r;
  float T0i;
  float T1r;
  float T1i;
  float T2r;
  float T2i;
  float T3r;
  float T3i;
  const int inRsizd1 = 2 * iRsiz;
  const int inRsizd1i = 2 * iRsiz + 1;
  const int inRsizd2 = 4 * iRsiz;
  const int inRsizd2i = 4 * iRsiz + 1;
  const int inRsizd3 = inRsizd2 + inRsizd1;
  const int inRsizd3i = inRsizd2 + inRsizd1 + 1;
  const int inRsizd4 = 8 * iRsiz;
  ocol = outdata;
  irow = indata;
  for (RowCnt = Nrows / 4; RowCnt > 0; RowCnt--) {
    idata = irow;
    odata = ocol;
    for (ColCnt = Ncols; ColCnt > 0; ColCnt--) {
      T0r = *idata;
      T0i = *(idata + 1);
      T1r = *(idata + inRsizd1);
      T1i = *(idata + inRsizd1i);
      T2r = *(idata + inRsizd2);
      T2i = *(idata + inRsizd2i);
      T3r = *(idata + inRsizd3);
      T3i = *(idata + inRsizd3i);
      *odata = T0r;
      *(odata + 1) = T0i;
      *(odata + 2) = T1r;
      *(odata + 3) = T1i;
      *(odata + 4) = T2r;
      *(odata + 5) = T2i;
      *(odata + 6) = T3r;
      *(odata + 7) = T3i;
      idata += 2;
      odata += 2 * oRsiz;
    }
    irow += inRsizd4;
    ocol += 8;
  }
  if (Nrows % 4 != 0) {
    for (ColCnt = Ncols; ColCnt > 0; ColCnt--) {
      idata = irow;
      odata = ocol;
      for (RowCnt = Nrows % 4; RowCnt > 0; RowCnt--) {
        T0r = *idata;
        T0i = *(idata + 1);
        *odata = T0r;
        *(odata + 1) = T0i;
        odata += 2;
        idata += 2 * iRsiz;
      }
      irow += 2;
      ocol += 2 * oRsiz;
    }
  }
}
```