void FUN_00402e30(uint *param_1,int param_2,uint param_3,uint param_4)

{

  uint uVar1;

  uint uVar2;

  uint uVar3;

  int iVar4;

  int iVar5;

  int iVar6;

  uint *puVar7;

  int iVar8;

  uint uVar9;

  int iVar10;

  uint uVar11;

  uint uVar12;

  uVar9 = param_4 & 0x8000001f;

  uVar3 = param_4 + 0x1f >> 5;

  if ((int)uVar9 < 0) {

    uVar9 = (uVar9 - 1 | 0xffffffe0) + 1;

  }

  uVar11 = param_3;

  if ((int)param_3 < 0) {

    uVar11 = param_3 + 0x1f;

  }

  param_3 = param_3 & 0x8000001f;

  iVar8 = (int)uVar11 >> 5;

  if ((int)param_3 < 0) {

    param_3 = (param_3 - 1 | 0xffffffe0) + 1;

  }

  uVar11 = (1 << (uVar9 & 0x1f)) - 1;

  if (iVar8 < (int)uVar3) {

    uVar12 = 0x20 - param_3;

    iVar6 = 0;

    iVar10 = uVar3 - 1;

    iVar5 = iVar8;

    puVar7 = param_1;

    do {

      if ((param_3 == 0) || (iVar4 = iVar5 + 1, (int)uVar3 <= iVar4)) {

        uVar1 = *(uint *)(param_2 + iVar5 * 4);

        uVar2 = 0;

        iVar4 = iVar10;

        if (uVar9 != 0) goto LAB_00402ee8;

LAB_00402f34:

        *puVar7 = uVar1 >> (param_3 & 0x1f) | uVar2;

      }

      else {

        uVar2 = *(uint *)(param_2 + iVar4 * 4);

        if (iVar4 == iVar10) {

          if (uVar9 == 0) {

            *puVar7 = *(uint *)(param_2 + iVar5 * 4) >> (param_3 & 0x1f) | uVar2 << (uVar12 & 0x1f);

            goto LAB_00402f00;

          }

          uVar1 = *(uint *)(param_2 + iVar5 * 4);

          uVar2 = (uVar2 & uVar11) << (uVar12 & 0x1f);

        }

        else {

          uVar1 = *(uint *)(param_2 + iVar5 * 4);

          uVar2 = uVar2 << (uVar12 & 0x1f);

          iVar4 = iVar10;

          if (uVar9 == 0) goto LAB_00402f34;

        }

LAB_00402ee8:

        if (iVar4 == iVar5) {

          uVar1 = uVar1 & uVar11;

        }

        uVar2 = uVar1 >> (param_3 & 0x1f) | uVar2;

        *puVar7 = uVar2;

        if (iVar4 == iVar6) {

          *puVar7 = uVar2 & uVar11;

        }

      }

LAB_00402f00:

      iVar6 = iVar6 + 1;

      puVar7 = puVar7 + 1;

      iVar5 = iVar6 + iVar8;

    } while (iVar6 != uVar3 - iVar8);

  }

  if (iVar8 != 0) {

    memset(param_1 + (uVar3 - iVar8),0,iVar8 << 2);

    return;

  }

  return;

}