user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<dt>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x38,%rsp
  mov    %rdi,%r15
  mov    %rdi,0x28(%rsp)
  mov    %edx,%r14d
  mov    %edx,0x8(%rsp)
  cmp    %esi,%edx
  mov    %esi,0xc(%rsp)
  mov    %esi,%ebx
  cmovge %edx,%ebx
  movslq %ebx,%rbx
  lea    0x0(,%rbx,8),%r13
  mov    %r13,%rdi
  call   <malloc@plt>
  mov    %rax,%rbp
  mov    %r13,%rdi
  call   <malloc@plt>
  mov    %rax,%r12
  lea    0x8(%r13),%rdi
  call   <malloc@plt>
  mov    %rax,0x10(%rsp)
  lea    0x0(,%rbx,4),%rdi
  call   <malloc@plt>
  mov    %rax,0x18(%rsp)
  test   %r14d,%r14d
  jle    L6
  movslq %r14d,%rbx
  shl    $0x3,%rbx
  mov    0xc(%rsp),%esi
  lea    -0x1(%rsi),%eax
  lea    0x8(,%rax,8),%r13
  lea    0x0(%r13,%rbp,1),%r14
  add    %r12,%r13
  mov    $0x0,%eax
  mov    %r12,0x20(%rsp)
  mov    %eax,%r12d
  jmp    L129
L136:
  movsd  (%rax),%xmm0
  movsd  %xmm0,(%rdx)
  add    $0x8,%rax
  add    %rbx,%rdx
  cmp    %r13,%rax
  jne    L136
L47:
  add    $0x1,%r12d
  add    $0x8,%r15
  cmp    %r12d,0x8(%rsp)
  je     L16
L129:
  mov    %rbp,%rax
  mov    %r15,%rdx
  cmpl   $0x0,0xc(%rsp)
  jle    L158
L11:
  movsd  (%rdx),%xmm0
  movsd  %xmm0,(%rax)
  add    %rbx,%rdx
  add    $0x8,%rax
  cmp    %r14,%rax
  jne    L11
  mov    0x18(%rsp),%r8
  mov    0x10(%rsp),%rcx
  mov    0x20(%rsp),%rdx
  mov    0xc(%rsp),%esi
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <dt_row@plt>
  mov    %r15,%rdx
  mov    0x20(%rsp),%rax
  jmp    L136
L16:
  mov    0x20(%rsp),%r12
L6:
  cmpl   $0x0,0xc(%rsp)
  jle    L147
  mov    $0x0,%r15d
  mov    $0x0,%r14d
  mov    0x8(%rsp),%r13d
  jmp    L122
L62:
  movsd  (%r12,%rax,8),%xmm0
  movsd  %xmm0,(%rbx,%rax,8)
  add    $0x1,%rax
  cmp    %r13,%rax
  jne    L62
L60:
  add    $0x1,%r14d
  add    0x8(%rsp),%r15d
  cmp    %r14d,0xc(%rsp)
  je     L147
L122:
  cmpl   $0x0,0x8(%rsp)
  jle    L1
  movslq %r15d,%rax
  mov    0x28(%rsp),%rsi
  lea    (%rsi,%rax,8),%rbx
  mov    $0x0,%eax
L21:
  movsd  (%rbx,%rax,8),%xmm0
  movsd  %xmm0,0x0(%rbp,%rax,8)
  add    $0x1,%rax
  cmp    %r13,%rax
  jne    L21
  mov    0x18(%rsp),%r8
  mov    0x10(%rsp),%rcx
  mov    %r12,%rdx
  mov    0x8(%rsp),%esi
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <dt_row@plt>
  mov    $0x0,%eax
  jmp    L62
L147:
  mov    %rbp,%rdi
  call   <free@plt>
  mov    %r12,%rdi
  call   <free@plt>
  mov    0x10(%rsp),%rdi
  call   <free@plt>
  mov    0x18(%rsp),%rdi
  call   <free@plt>
  add    $0x38,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L1:
  mov    0x18(%rsp),%r8
  mov    0x10(%rsp),%rcx
  mov    %r12,%rdx
  mov    0x8(%rsp),%esi
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <dt_row@plt>
  jmp    L60
L158:
  mov    0x18(%rsp),%r8
  mov    0x10(%rsp),%rcx
  mov    0x20(%rsp),%rdx
  mov    0xc(%rsp),%esi
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <dt_row@plt>
  jmp    L47
```

assistant: ```c
void dt(double *m, int rows, int cols) {
  const int n = ((rows) > (cols) ? (rows) : (cols));
  double *f = (double *)malloc(sizeof(f[0]) * n);
  double *d = (double *)malloc(sizeof(d[0]) * n);
  double *z = (double *)malloc(sizeof(z[0]) * (n + 1));
  int *v = (int *)malloc(sizeof(v[0]) * n);
  int x, y;
  for (x = 0; x < cols; ++x) {
    for (y = 0; y < rows; ++y) {
      f[y] = m[y * cols + x];
    }
    dt_row(f, rows, d, z, v);
    for (y = 0; y < rows; ++y) {
      m[y * cols + x] = d[y];
    }
  }
  for (y = 0; y < rows; ++y) {
    for (x = 0; x < cols; ++x) {
      f[x] = m[y * cols + x];
    }
    dt_row(f, cols, d, z, v);
    for (x = 0; x < cols; ++x) {
      m[y * cols + x] = d[x];
    }
  }
  free(f);
  free(d);
  free(z);
  free(v);
}
```