// 
// cvtdate from 0x18013ca50 to 0x18013cc45 (501 bytes)
// 
// 4 xrefs:
// > _isindst_nolock @ 0x18013c828
// > _isindst_nolock @ 0x18013c964
// > _isindst_nolock @ 0x18013c9a4
// > <???> @ 0x180203a34
// 
// This function is hookable on this platform!
// 
// Using BromaIDA 8.0.0 @ https://github.com/Stazzical/BromaIDA
// Using bindings at commit ba9f177b at Thu Jul 16 22:52:06 2026 from https://github.com/geode-sdk/bindings
// 

__int64 __fastcall cvtdate(int a1, int a2, int a3, int a4, int a5, int a6, int a7, int a8, int a9, int a10, int a11)
{
  __int64 v12; // rbx
  bool v15; // al
  bool v16; // bp
  int v17; // r10d
  int v18; // r10d
  int v19; // r8d
  int v20; // eax
  int v21; // ecx
  int v22; // r8d
  int v23; // r8d
  __int64 result; // rax
  bool v25; // sf
  int v26; // [rsp+50h] [rbp+8h] BYREF

  v26 = 0;
  v12 = a4;
  v15 = unknown_libname_67(a3);
  v16 = v15;
  if ( a2 == 1 )
  {
    if ( v15 )
      v17 = dword_18017A634[v12];
    else
      v17 = dword_18017A5FC[v12];
    v18 = v17 + 1;
    v19 = (365 * a3 - 25563 + (a3 + 299) / 400 - (a3 - 1) / 100 + v18 + (a3 - 1) / 4) % 7;
    v20 = a6 + v18 + 7 * a5 - v19 - 7;
    if ( v19 > a6 )
      v20 = a6 + v18 + 7 * a5 - v19;
    if ( v16 )
      v21 = dword_18017A638[v12];
    else
      v21 = dword_18017A600[v12];
    v22 = v20;
    if ( a5 == 5 && v20 > v21 )
      v22 = v20 - 7;
  }
  else
  {
    if ( v15 )
      v23 = dword_18017A634[v12];
    else
      v23 = dword_18017A5FC[v12];
    v22 = a7 + v23;
  }
  result = (unsigned int)(a9 + 60 * a8);
  if ( !a1 )
  {
    dword_1801B2144 = v22;
    dword_1801B2148 = a11 + 1000 * (a10 + 60 * result);
    dword_1801B2140 = a3;
    return result;
  }
  dword_1801B2158 = a11 + 1000 * (a10 + 60 * result);
  dword_1801B2154 = v22;
  if ( (unsigned int)sub_18013C6FC(&v26) )
    invoke_watson(nullptr, nullptr, nullptr, 0, 0);
  v25 = 1000 * v26 + dword_1801B2158 < 0;
  result = (unsigned int)(1000 * v26 + dword_1801B2158);
  dword_1801B2158 += 1000 * v26;
  if ( v25 )
  {
    result = (unsigned int)(result + 86400000);
    --dword_1801B2154;
LABEL_24:
    dword_1801B2158 = result;
    goto LABEL_25;
  }
  if ( (int)result >= 86400000 )
  {
    result = (unsigned int)(result - 86400000);
    ++dword_1801B2154;
    goto LABEL_24;
  }
LABEL_25:
  dword_1801B2150 = a3;
  return result;
}