/* MessageServer_Release_x64.exe sha256 7911b15c4379625eaa12ff227708aa3a033bc6ac2cf6b34283136e3a62df25f1
 * Ghidra 12.1.2 decompiler output for 0x1400df690 FUN_1400df690
 * Pseudocode, not original source. */

void FUN_1400df690(longlong param_1,undefined8 param_2,longlong param_3,undefined8 param_4)

{
  int iVar1;
  int iVar2;
  int iVar3;
  longlong lVar4;
  int iVar5;
  undefined8 *_Src;
  longlong lVar6;
  undefined8 *puVar7;
  longlong lVar8;
  
  iVar1 = *(int *)(param_1 + 0x18);
  lVar6 = (longlong)iVar1;
  iVar5 = (int)param_2;
  if (iVar1 == 0) {
    iVar1 = *(int *)(param_1 + 0x18);
    FUN_1400d3c80(param_1,iVar1 + 1,param_3);
    puVar7 = (undefined8 *)0x0;
    if (0 < iVar1) {
      _Src = puVar7;
      if (*(int *)(param_1 + 0x18) != 0) {
        _Src = *(undefined8 **)(param_1 + 0x10);
      }
      memmove(_Src + 1,_Src,(longlong)iVar1 << 3);
    }
    if (*(int *)(param_1 + 0x18) != 0) {
      puVar7 = *(undefined8 **)(param_1 + 0x10);
    }
    *puVar7 = CONCAT44(iVar5,iVar5);
  }
  else {
    iVar3 = iVar1 + -1;
    if ((iVar3 < 0) || (iVar1 <= iVar3)) {
                    /* WARNING: Subroutine does not return */
      FUN_14006be30(param_1,param_2,param_3,param_4);
    }
    lVar8 = *(longlong *)(param_1 + 0x10);
    lVar4 = (longlong)iVar3;
    iVar3 = *(int *)(lVar8 + lVar4 * 8);
    if ((iVar3 != iVar5) && (iVar2 = *(int *)(lVar8 + 4 + lVar4 * 8), iVar2 != iVar5)) {
      if ((iVar2 + 1 != iVar5) && (iVar3 + 1 != iVar5)) {
        if (iVar1 < 0) {
                    /* WARNING: Subroutine does not return */
          FUN_14006be00();
        }
        iVar3 = *(int *)(param_1 + 0x18);
        FUN_1400d3c80(param_1,iVar3 + 1,lVar8);
        iVar3 = iVar3 - iVar1;
        lVar8 = 0;
        if (0 < iVar3) {
          lVar4 = lVar8;
          if (*(int *)(param_1 + 0x18) != 0) {
            lVar4 = *(longlong *)(param_1 + 0x10);
          }
          memmove((void *)(lVar4 + 8 + lVar6 * 8),(void *)(lVar4 + lVar6 * 8),(longlong)iVar3 << 3);
        }
        if (*(int *)(param_1 + 0x18) != 0) {
          lVar8 = *(longlong *)(param_1 + 0x10);
        }
        *(ulonglong *)(lVar8 + lVar6 * 8) = CONCAT44(iVar5,iVar5);
        return;
      }
      *(int *)(lVar8 + 4 + lVar4 * 8) = iVar5;
      return;
    }
  }
  return;
}