void FUN_00402620(int param_1,uint param_2,int param_3)

{

  int iVar1;

  uint *puVar2;

  uint *puVar3;

  uint uVar4;

  uint uVar5;

  uint uVar6;

  uVar4 = param_2;

  if ((int)param_2 < 0) {

    uVar4 = param_2 + 0x1f;

  }

  uVar5 = param_2 & 0x8000001f;

  puVar2 = (uint *)(param_1 + ((int)uVar4 >> 5) * 4);

  if ((int)uVar5 < 0) {

    uVar5 = (uVar5 - 1 | 0xffffffe0) + 1;

  }

  uVar6 = (param_3 + uVar5) - 0x20;

  uVar4 = -1 << (uVar5 & 0x1f);

  iVar1 = param_3;

  if (-1 < (int)uVar6) {

    uVar5 = *puVar2;

    puVar3 = puVar2 + (uVar6 >> 5) + 1;

    while( true ) {

      *puVar2 = ~uVar4 & uVar5;

      puVar2 = puVar2 + 1;

      uVar4 = 0xffffffff;

      if (puVar2 == puVar3) break;

      uVar5 = *puVar2;

    }

    uVar4 = 0xffffffff;

    iVar1 = uVar6 + (uVar6 >> 5) * -0x20;

  }

  if (iVar1 != 0) {

    if ((param_3 + param_2 & 0x1f) == 0) {

      *puVar2 = *puVar2 & ~uVar4;

      return;

    }

    *puVar2 = *puVar2 & ~((1 << (param_3 + param_2 & 0x1f)) - 1U & uVar4);

  }

  return;

}