user: 这段汇编代码用C语言表示是什么样的？

```asm
<matprod_trans12_sub>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r15
  mov    %ecx,%r15d
  push   %r14
  mov    %rdx,%r14
  push   %r13
  mov    %r8d,%r13d
  push   %r12
  push   %rbx
  mov    %r9d,%ebx
  sub    $0x88,%rsp
  mov    %rsi,-0x48(%rbp)
  mov    %r8d,-0x50(%rbp)
  mov    %r9d,-0x64(%rbp)
  mov    %rdi,-0x90(%rbp)
  mov    $0x1,%edi
  mov    %fs:0x28,%rax
  mov    %rax,-0x38(%rbp)
  xor    %eax,%eax
  mov    %rsp,-0xa0(%rbp)
  call   <assert@plt>
  mov    $0x1,%edi
  call   <assert@plt>
  mov    $0x1,%edi
  call   <assert@plt>
  xor    %edi,%edi
  cmp    $0x1,%ebx
  setg   %dil
  call   <assert@plt>
  xor    %edi,%edi
  cmp    $0x1,%r13d
  setg   %dil
  call   <assert@plt>
  xor    %edi,%edi
  cmp    $0x1,%r15d
  setg   %dil
  call   <assert@plt>
  xor    %edi,%edi
  cmpl   $0x1,0x10(%rbp)
  setg   %dil
  call   <assert@plt>
  cmp    $0x2,%ebx
  je     L176
  cmpl   $0x7f,0x10(%rbp)
  jg     L206
  mov    $0x800,%eax
  mov    %rsp,%rcx
  cltd
  idivl  0x10(%rbp)
  and    $0xfffffffc,%eax
  cmp    %r15d,%eax
  cmovg  %r15d,%eax
  mov    %eax,-0x4c(%rbp)
  imul   0x10(%rbp),%eax
  add    $0x3,%eax
  cltq
  lea    0xf(,%rax,8),%rdx
  mov    %rdx,%rax
  and    $0xfffffffffffff000,%rdx
  sub    %rdx,%rcx
  and    $0xfffffffffffffff0,%rax
  cmp    %rcx,%rsp
  je     L239
L189:
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  cmp    %rcx,%rsp
  jne    L189
L239:
  and    $0xfff,%eax
  sub    %rax,%rsp
  test   %rax,%rax
  je     L113
  orq    $0x0,-0x8(%rsp,%rax,1)
L113:
  mov    0x10(%rbp),%eax
  mov    %rsp,-0x58(%rbp)
  mov    %eax,-0x88(%rbp)
  test   %eax,%eax
  jg     L199
  jmp    L83
  nopw   0x0(%rax,%rax,1)
L206:
  mov    $0x10,%eax
  mov    %rsp,%rcx
  cmp    %eax,%r15d
  cmovle %r15d,%eax
  mov    %eax,-0x4c(%rbp)
  shl    $0x7,%eax
  add    $0x3,%eax
  cltq
  lea    0xf(,%rax,8),%rdx
  mov    %rdx,%rax
  and    $0xfffffffffffff000,%rdx
  sub    %rdx,%rcx
  and    $0xfffffffffffffff0,%rax
  cmp    %rcx,%rsp
  je     L129
L39:
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  cmp    %rcx,%rsp
  jne    L39
L129:
  and    $0xfff,%eax
  sub    %rax,%rsp
  test   %rax,%rax
  je     L104
  orq    $0x0,-0x8(%rsp,%rax,1)
L104:
  mov    %rsp,-0x58(%rbp)
  movl   $0x80,-0x88(%rbp)
L199:
  movslq -0x50(%rbp),%rax
  movslq %r15d,%rbx
  mov    %r15d,%r11d
  movl   $0x0,-0x84(%rbp)
  shl    $0x3,%rbx
  mov    %rax,-0x60(%rbp)
  mov    -0x58(%rbp),%rax
  add    $0x8,%rax
  mov    %rax,-0xa8(%rbp)
L97:
  mov    0x10(%rbp),%r10d
  mov    -0x84(%rbp),%edi
  mov    -0x88(%rbp),%esi
  sub    %edi,%r10d
  cmp    %esi,%r10d
  jle    L136
  mov    %r10d,%eax
  sub    %esi,%eax
  cmp    $0x2,%eax
  jle    L210
  add    %esi,%edi
  mov    %esi,%r10d
  mov    %edi,-0x84(%rbp)
L25:
  movslq %r10d,%rax
  mov    %rax,-0x98(%rbp)
  test   %r11d,%r11d
  jle    L185
  mov    -0xa8(%rbp),%rsi
  lea    0x0(,%rax,8),%r15
  lea    -0x1(%r10),%eax
  xor    %r12d,%r12d
  shl    $0x3,%rax
  mov    $0xfffffffffffffff8,%r13
  add    %rax,%rsi
  sub    %rax,%r13
  mov    %rsi,-0x80(%rbp)
  mov    -0x90(%rbp),%rsi
  nopl   0x0(%rax,%rax,1)
L139:
  mov    %r11d,%r9d
  mov    -0x4c(%rbp),%edi
  mov    %r11d,-0x78(%rbp)
  sub    %r12d,%r9d
  cmp    %edi,%r9d
  jle    L168
  mov    %r9d,%eax
  push   %r10
  sar    %r9d
  mov    -0x50(%rbp),%r8d
  sub    %edi,%eax
  mov    -0x64(%rbp),%ecx
  mov    -0x58(%rbp),%rdx
  push   %r10
  cmp    $0x3,%eax
  mov    %r10d,-0x74(%rbp)
  cmovge %edi,%r9d
  mov    -0x48(%rbp),%rdi
  mov    %rsi,-0x70(%rbp)
  mov    %r9d,-0x68(%rbp)
  call   <matprod_mat_mat_sub_xrows@plt>
  movslq -0x68(%rbp),%r9
  pop    %rcx
  mov    -0x74(%rbp),%r10d
  pop    %rsi
  test   %r9d,%r9d
  mov    -0x70(%rbp),%rsi
  mov    -0x78(%rbp),%r11d
  lea    (%r9,%r12,1),%r8d
  jle    L211
L165:
  test   %r10d,%r10d
  je     L211
  mov    -0x80(%rbp),%rcx
  xor    %edi,%edi
  nopw   0x0(%rax,%rax,1)
L223:
  lea    0x0(%r13,%rcx,1),%rax
  lea    (%r14,%r12,8),%rdx
  nopl   0x0(%rax)
L163:
  movsd  (%rax),%xmm0
  add    $0x8,%rax
  movsd  %xmm0,(%rdx)
  add    %rbx,%rdx
  cmp    %rcx,%rax
  jne    L163
  add    $0x1,%edi
  add    $0x1,%r12
  add    %r15,%rcx
  cmp    %r9d,%edi
  jl     L223
L211:
  imul   -0x60(%rbp),%r9
  movslq %r8d,%r12
  lea    (%rsi,%r9,8),%rsi
  cmp    %r8d,%r11d
  jg     L139
L185:
  mov    -0x48(%rbp),%rsi
  mov    -0x98(%rbp),%rax
  lea    (%rsi,%rax,8),%rsi
  imul   %rbx,%rax
  mov    %rsi,-0x48(%rbp)
  add    %rax,%r14
  mov    -0x84(%rbp),%eax
  cmp    %eax,0x10(%rbp)
  jg     L97
L83:
  mov    -0xa0(%rbp),%rsp
L226:
  mov    -0x38(%rbp),%rax
  sub    %fs:0x28,%rax
  jne    L100
  lea    -0x28(%rbp),%rsp
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  pop    %rbp
  ret
L168:
  mov    -0x50(%rbp),%r8d
  mov    -0x58(%rbp),%rdx
  push   %r10
  mov    -0x64(%rbp),%ecx
  mov    -0x48(%rbp),%rdi
  push   %r10
  mov    %r10d,-0x74(%rbp)
  mov    %r9d,-0x68(%rbp)
  mov    %rsi,-0x70(%rbp)
  call   <matprod_mat_mat_sub_xrows@plt>
  mov    -0x78(%rbp),%r11d
  pop    %rax
  mov    -0x70(%rbp),%rsi
  movslq -0x68(%rbp),%r9
  mov    -0x74(%rbp),%r10d
  pop    %rdx
  mov    %r11d,%r8d
  jmp    L165
L136:
  mov    0x10(%rbp),%eax
  mov    %eax,-0x84(%rbp)
  jmp    L25
L210:
  sar    %r10d
  and    $0xfffffffc,%r10d
  add    %r10d,-0x84(%rbp)
  jmp    L25
L176:
  xor    %edi,%edi
  cmpl   $0x2,0x10(%rbp)
  sete   %dil
  call   <assert@plt>
  mov    -0x50(%rbp),%r8d
  mov    -0x48(%rbp),%rsi
  mov    %r15d,%ecx
  mov    -0x90(%rbp),%rdi
  mov    %r14,%rdx
  call   <matprod_trans12_m2@plt>
  jmp    L226
L100:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
void matprod_trans12_sub(double *restrict x, double *restrict y, double *restrict z, int n, int k, int m, int zcols) {
  assert(((uintptr_t)(x) & (1 - 1)) == 0);
  assert(((uintptr_t)(y) & (1 - 1)) == 0);
  assert(((uintptr_t)(z) & (1 - 1)) == 0);
  x = (x);
  y = (y);
  z = (z);
  assert(m >= 2);
  assert(k >= 2);
  assert(n >= 2);
  assert(zcols >= 2);
  if (m == 2) {
    assert(zcols == 2);
    matprod_trans12_m2(x, y, z, n, k);
    return;
  }
  int zr, zc;
  zc = 128;
  if (zc > zcols) {
    zc = zcols;
  }
  zr = (2048 / zc) & ~3;
  if (zr > n) {
    zr = n;
  }
  double zelem[zr * zc + 3];
  double *ztmp = zelem;
  while ((((uintptr_t)ztmp) & (1 - 1)) != 0) {
    ztmp += 1;
  }
  int j = 0;
  while (j < zcols) {
    int remaining_cols = zcols - j;
    int zzc = remaining_cols <= zc ? remaining_cols : remaining_cols - zc < 3 ? (remaining_cols / 2) & ~3 : zc;
    double *xx = x;
    int i = 0;
    while (i < n) {
      int remaining_rows = n - i;
      int zzr = remaining_rows <= zr ? remaining_rows : remaining_rows - zr < 3 ? remaining_rows / 2 : zr;
      matprod_mat_mat_sub_xrows(y, xx, ztmp, m, k, zzr, zzc, zzc);
      int ii, jj;
      for (ii = 0; ii < zzr; ii++) {
        for (jj = 0; jj < zzc; jj++) {
          z[i + ii + (size_t)jj * n] = ztmp[jj + ii * zzc];
        }
      }
      xx += (size_t)zzr * k;
      i += zzr;
    }
    y += zzc;
    z += (size_t)zzc * n;
    j += zzc;
  }
}
```