// 
// sub_180002550 from 0x180002550 to 0x180002736 (486 bytes)
// 
// 4 xrefs:
// > sub_180001E90 @ 0x180001f19
// > <???> @ 0x18017d3a8
// > <???> @ 0x18017d3b8
// > <???> @ 0x1801f60fc
// 
// 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 sub_180002550(int *a1, __int64 a2, int a3, int a4)
{
  __int64 v4; // rsi
  int *v7; // r11
  __int64 v8; // rbx
  int *v9; // r10
  __int64 v10; // r8
  unsigned int v11; // r9d
  __int64 v12; // rdx
  int v13; // ecx
  int v14; // eax
  int v15; // edx
  unsigned int *v16; // rax
  __int64 v17; // rdx
  char v18; // cl
  __int64 i; // r9
  int v20; // edi
  int v21; // r8d
  int j; // ecx
  unsigned int v23; // edx
  int v25; // [rsp+0h] [rbp-BCh]
  _OWORD v26[8]; // [rsp+4h] [rbp-B8h] BYREF
  int v27; // [rsp+84h] [rbp-38h]

  v4 = a3;
  v27 = 0;
  v7 = a1;
  memset(v26, 0, sizeof(v26));
  if ( a3 > 0 )
  {
    v8 = 0;
    v9 = a1;
    do
    {
      v10 = *(char *)(v8 + a2);
      if ( (int)v10 <= 0 )
      {
        if ( !a4 )
          ++v9;
      }
      else
      {
        v11 = *((_DWORD *)v26 + v10);
        v12 = *(char *)(v8 + a2);
        if ( (int)v10 < 32 && v11 >> v10 )
          return 0xFFFFFFFFLL;
        *v9 = v11;
        v13 = v10;
        ++v9;
        while ( 1 )
        {
          v14 = *((_DWORD *)v26 + v12);
          if ( (v14 & 1) != 0 )
            break;
          --v13;
          *((_DWORD *)v26 + v12--) = v14 + 1;
          if ( v12 <= 0 )
            goto LABEL_13;
        }
        if ( v13 == 1 )
          ++DWORD1(v26[0]);
        else
          *((_DWORD *)v26 + v13) = 2 * *(&v25 + v13);
LABEL_13:
        v15 = v10 + 1;
        if ( (int)v10 + 1 < 33 )
        {
          v16 = (unsigned int *)v26 + v15;
          do
          {
            if ( *v16 >> 1 != v11 )
              break;
            ++v15;
            v11 = *v16;
            *v16 = 2 * *(v16 - 1);
            ++v16;
          }
          while ( v15 < 33 );
        }
      }
      ++v8;
    }
    while ( v8 < v4 );
  }
  if ( a4 == 1 )
  {
LABEL_25:
    if ( v4 > 0 )
    {
      for ( i = 0; i < v4; ++i )
      {
        v20 = *(char *)(i + a2);
        v21 = 0;
        for ( j = 0; j < v20; v21 = (2 * v21) | v23 & 1 )
          v23 = (unsigned int)*v7 >> j++;
        if ( !a4 || (_BYTE)v20 )
          *v7++ = v21;
      }
    }
    return 0;
  }
  else
  {
    v17 = 1;
    v18 = 31;
    while ( ((0xFFFFFFFF >> v18) & *((_DWORD *)v26 + v17)) == 0 )
    {
      --v18;
      if ( ++v17 >= 33 )
        goto LABEL_25;
    }
    return 0xFFFFFFFFLL;
  }
}