old_bf_read::ReadBitCoord

/* WARNING: Globals starting with '_' overlap smaller symbols at the same address */
/* old_bf_read::ReadBitCoord() */

longdouble __thiscall old_bf_read::ReadBitCoord(old_bf_read *this)

{
  uint uVar1;
  old_bf_read oVar2;
  byte bVar3;
  int iVar4;
  int iVar5;
  int iVar6;
  uint uVar7;
  bool bVar8;
  bool bVar9;
  bool bVar10;
  float fVar11;
  double dVar12;
  double dVar13;
  
  iVar6 = *(int *)(this + 8);
  iVar4 = *(int *)(this + 0xc);
  if (iVar4 < iVar6) {
    oVar2 = this[0x10];
    if (oVar2 == (old_bf_read)0x0) {
      bVar3 = *(byte *)(*(int *)this + (iVar4 >> 3));
      iVar5 = iVar4 + 1;
      *(int *)(this + 0xc) = iVar5;
      bVar8 = ((uint)bVar3 & 1 << ((byte)iVar4 & 7)) != 0;
      if (iVar6 <= iVar5) goto LAB_00b668b2;
      bVar3 = *(byte *)(*(int *)this + (iVar5 >> 3));
      *(int *)(this + 0xc) = iVar4 + 2;
      bVar9 = ((uint)bVar3 & 1 << ((byte)iVar5 & 7)) != 0;
    }
    else {
      bVar8 = false;
      bVar9 = false;
    }
    fVar11 = 0.0;
    if (!bVar9 && !bVar8) goto LAB_00b6689d;
  }
  else {
    bVar8 = false;
LAB_00b668b2:
    bVar9 = false;
    this[0x10] = (old_bf_read)0x1;
    fVar11 = 0.0;
    oVar2 = (old_bf_read)0x1;
    if (!bVar8) goto LAB_00b6689d;
  }
  iVar4 = *(int *)(this + 0xc);
  if (iVar4 < iVar6) {
    if (oVar2 == (old_bf_read)0x0) {
      bVar3 = *(byte *)(*(int *)this + (iVar4 >> 3));
      *(int *)(this + 0xc) = iVar4 + 1;
      bVar10 = ((uint)bVar3 & 1 << ((byte)iVar4 & 7)) != 0;
    }
    else {
      bVar10 = false;
    }
  }
  else {
    bVar10 = false;
    this[0x10] = (old_bf_read)0x1;
  }
  dVar13 = 0.0;
  if (bVar8) {
    iVar4 = *(int *)(this + 0xc);
    uVar1 = iVar4 + 0xe;
    if (iVar6 < (int)uVar1) {
      this[0x10] = (old_bf_read)0x1;
      dVar13 = 1.0;
      *(int *)(this + 0xc) = iVar6;
    }
    else {
      iVar5 = iVar4 >> 5;
      uVar7 = *(uint *)(*(int *)this + iVar5 * 4) >> ((byte)iVar4 & 0x1f);
      *(uint *)(this + 0xc) = uVar1;
      if (iVar5 == iVar4 + 0xd >> 5) {
        dVar13 = (double)(int)((uVar7 & DAT_01044298) + 1);
      }
      else {
        dVar13 = (double)(int)(((*(uint *)(*(int *)this + 4 + iVar5 * 4) &
                                (&g_ExtraMasks)[uVar1 & 0x1f]) <<
                                (0xeU - (char)(uVar1 & 0x1f) & 0x1f) | uVar7) + 1);
      }
    }
  }
  dVar12 = 0.0;
  if (bVar9) {
    iVar4 = *(int *)(this + 0xc);
    uVar1 = iVar4 + 5;
    if (iVar6 < (int)uVar1) {
      *(int *)(this + 0xc) = iVar6;
      this[0x10] = (old_bf_read)0x1;
    }
    else {
      iVar6 = iVar4 >> 5;
      uVar7 = *(uint *)(*(int *)this + iVar6 * 4);
      *(uint *)(this + 0xc) = uVar1;
      uVar7 = uVar7 >> ((byte)iVar4 & 0x1f);
      if (iVar6 == iVar4 + 4 >> 5) {
        dVar12 = (double)(int)(uVar7 & _DAT_01044274) * 0.03125;
      }
      else {
        dVar12 = (double)(int)((*(uint *)(*(int *)this + 4 + iVar6 * 4) &
                               (&g_ExtraMasks)[uVar1 & 0x1f]) << (5U - (char)(uVar1 & 0x1f) & 0x1f)
                              | uVar7) * 0.03125;
      }
    }
  }
  fVar11 = (float)(dVar12 + dVar13);
  if (bVar10) {
    return (longdouble)-fVar11;
  }
LAB_00b6689d:
  return (longdouble)fVar11;
}