user: 下面的汇编指令对应的C源代码是什么:

```asm
<solve_nxn_gepp>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x48,%rsp
  mov    %edi,0x34(%rsp)
  mov    %rsi,0x8(%rsp)
  test   %edi,%edi
  jle    L50
  mov    %rdx,%rbp
  lea    -0x2(%rdi),%eax
  mov    %eax,0x14(%rsp)
  movslq %edi,%r13
  lea    0x1(%r13),%rax
  mov    %rax,0x28(%rsp)
  lea    -0x1(%rdi),%eax
  mov    %eax,0x30(%rsp)
  mov    %edi,%eax
  mov    %rax,0x20(%rsp)
  mov    %r13,%rax
  neg    %rax
  lea    (%rsi,%rax,8),%r15
  lea    0x0(,%r13,8),%rax
  mov    %rax,(%rsp)
  mov    $0x1,%r12d
  mov    %rcx,0x38(%rsp)
  mov    %edi,%r14d
  jmp    L15
L43:
  mov    %rdi,%r10
  movsd  -0x8(%rdi),%xmm2
  divsd  (%r15,%r13,8),%xmm2
  mov    %rdi,%rax
L30:
  movapd %xmm2,%xmm1
  mulsd  (%rax,%rcx,8),%xmm1
  movsd  (%rax),%xmm0
  subsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
  add    $0x8,%rax
  cmp    %rdx,%rax
  jne    L30
  movq   $0x0,-0x8(%r10)
  mulsd  -0x8(%rbp,%r12,8),%xmm2
  movsd  0x0(%rbp,%rsi,8),%xmm0
  subsd  %xmm2,%xmm0
  movsd  %xmm0,0x0(%rbp,%rsi,8)
  add    $0x1,%rsi
  add    %r9,%rdi
  sub    %r8,%rcx
  add    %r9,%rdx
  cmp    %esi,%ebx
  jg     L43
  add    $0x1,%r12
  subl   $0x1,0x14(%rsp)
  add    0x28(%rsp),%r13
L15:
  lea    -0x1(%r12),%edx
  movsd  (%r15,%r13,8),%xmm1
  mov    %r12d,%ebx
  cmp    0x20(%rsp),%r12
  je     L18
  lea    0x0(,%r13,8),%rax
  mov    %rax,0x18(%rsp)
  mov    0x8(%rsp),%rdi
  add    %rax,%rdi
  mov    %rdi,%rax
  mov    %edx,%ecx
L45:
  movsd  (%rax),%xmm0
  andpd  D3(%rip),%xmm0
  comisd %xmm1,%xmm0
  maxsd  %xmm1,%xmm0
  movapd %xmm0,%xmm1
  cmova  %ebx,%ecx
  add    $0x1,%ebx
  add    (%rsp),%rax
  cmp    %ebx,%r14d
  jne    L45
  mov    %ebx,%r8d
  mov    %rbp,%rsi
  mov    0x8(%rsp),%rdi
  call   <swap_row@plt>
  mov    0x8(%rsp),%rsi
  mov    0x18(%rsp),%rax
  lea    0x8(%rsi,%rax,1),%rdi
  movslq %ebx,%r8
  mov    %r8,%rcx
  neg    %rcx
  mov    0x14(%rsp),%eax
  add    %r13,%rax
  lea    0x10(%rsi,%rax,8),%rdx
  mov    %r12,%rsi
  mov    (%rsp),%r9
  jmp    L43
L18:
  mov    0x38(%rsp),%r14
  mov    0x34(%rsp),%ebx
  mov    %ebx,%r8d
  mov    0x30(%rsp),%edx
  mov    %edx,%ecx
  mov    %rbp,%rsi
  mov    0x8(%rsp),%r12
  mov    %r12,%rdi
  call   <swap_row@plt>
  lea    -0x1(%rbx),%r10d
  movslq %r10d,%r11
  mov    %ebx,%eax
  not    %ebx
  movslq %ebx,%r9
  shl    $0x3,%r9
  mov    %eax,%ebx
  imul   %r10d,%eax
  mov    %eax,%edi
  cltq
  add    %r11,%rax
  lea    (%r12,%rax,8),%r8
  mov    %r11,%rsi
L62:
  movsd  0x0(%rbp,%rsi,8),%xmm1
  mov    %esi,%edx
  cmp    %esi,%r10d
  jle    L39
  movslq %edi,%rax
  lea    (%r12,%rax,8),%rcx
  mov    %r11,%rax
L84:
  movsd  (%r14,%rax,8),%xmm0
  mulsd  (%rcx,%rax,8),%xmm0
  subsd  %xmm0,%xmm1
  sub    $0x1,%rax
  cmp    %eax,%edx
  jl     L84
L39:
  divsd  (%r8),%xmm1
  movsd  %xmm1,(%r14,%rsi,8)
  sub    $0x1,%rsi
  add    %r9,%r8
  sub    %ebx,%edi
  test   %esi,%esi
  jns    L62
L50:
  add    $0x48,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
```

tool_calls: name: retrieve_data
arguments: data_tag: D3
type_infered: qword[2]

tool: {"D3": [0x7fffffffffffffff,0x0000000000000000]}

assistant: ```c
void solve_nxn_gepp(int n, double *a, double *b, double *x) {
  int j, col, row, max_row, dia;
  double max, tmp;
  for (dia = 0; dia < n; dia++) {
    max_row = dia, max = (*(a + ((dia) * (n) + (dia))));
    for (row = dia + 1; row < n; row++)
      if ((tmp = fabs((*(a + ((row) * (n) + (dia)))))) > max)
        max_row = row, max = tmp;
    swap_row(a, b, dia, max_row, n);
    for (row = dia + 1; row < n; row++) {
      tmp = (*(a + ((row) * (n) + (dia)))) / (*(a + ((dia) * (n) + (dia))));
      for (col = dia + 1; col < n; col++)
        (*(a + ((row) * (n) + (col)))) -= tmp * (*(a + ((dia) * (n) + (col))));
      (*(a + ((row) * (n) + (dia)))) = 0;
      b[row] -= tmp * b[dia];
    }
  }
  for (row = n - 1; row >= 0; row--) {
    tmp = b[row];
    for (j = n - 1; j > row; j--)
      tmp -= x[j] * (*(a + ((row) * (n) + (j))));
    x[row] = tmp / (*(a + ((row) * (n) + (row))));
  }
}
```