diff --git a/src/map/battle.cpp b/src/map/battle.cpp
index 6c6c81f4fd..ce13b0636d 100644
--- a/src/map/battle.cpp
+++ b/src/map/battle.cpp
@@ -1247,7 +1247,7 @@ bool battle_status_block_damage(struct block_list *src, struct block_list *targe
 			(skill_id == 0 && (status_get_status_data(src))->rhw.ele == ELE_GHOST))
 		{
 			if (skill_id == WL_SOULEXPANSION)
-				damage <<= 1; // If used against a player in White Imprison, the skill deals double damage.
+				damage *= 2; // If used against a player in White Imprison, the skill deals double damage.
 			status_change_end(target, SC_WHITEIMPRISON); // Those skills do damage and removes effect
 		} else {
 			d->dmg_lv = ATK_BLOCK;
@@ -1480,12 +1480,12 @@ int64 battle_calc_damage(struct block_list *src,struct block_list *bl,struct Dam
 		// Damage increasing effects
 #ifdef RENEWAL // Flat +400% damage from melee
 		if (sc->getSCE(SC_KAITE) && (flag&(BF_SHORT|BF_MAGIC)) == BF_SHORT)
-			damage <<= 2;
+			damage *= 4;
 #endif
 
 		if (sc->getSCE(SC_AETERNA) && skill_id != PF_SOULBURN) {
 			if (src->type != BL_MER || !skill_id)
-				damage <<= 1; // Lex Aeterna only doubles damage of regular attacks from mercenaries
+				damage *= 2; // Lex Aeterna only doubles damage of regular attacks from mercenaries
 
 #ifndef RENEWAL
 			if( skill_id != ASC_BREAKER || !(flag&BF_WEAPON) )
@@ -1537,7 +1537,7 @@ int64 battle_calc_damage(struct block_list *src,struct block_list *bl,struct Dam
 		}
 
 		if (sc->getSCE(SC_SOUNDOFDESTRUCTION))
-			damage <<= 1;
+			damage *= 2;
 		if (sc->getSCE(SC_DARKCROW) && (flag&(BF_SHORT|BF_MAGIC)) == BF_SHORT) {
 			int bonus = sc->getSCE(SC_DARKCROW)->val2;
 		if( sc->getSCE(SC_BURNT) && status_get_element(src) == ELE_FIRE )
@@ -1560,7 +1560,7 @@ int64 battle_calc_damage(struct block_list *src,struct block_list *bl,struct Dam
 			if( map_flag_vs(bl->m) )
 				damage = (int64)damage*2/3; //Receive 66% damage
 			else
-				damage >>= 1; //Receive 50% damage
+				damage /= 2; //Receive 50% damage
 		}
 #endif
 
@@ -1580,7 +1580,7 @@ int64 battle_calc_damage(struct block_list *src,struct block_list *bl,struct Dam
 			if(flag&BF_SKILL) //25% reduction
 				damage -= damage * 25 / 100;
 			else if ((flag&(BF_LONG|BF_WEAPON)) == (BF_LONG|BF_WEAPON))
-				damage >>= 2; //75% reduction
+				damage /= 4; //75% reduction
 		}
 
 		if (sc->getSCE(SC_SPORE_EXPLOSION) && (flag & BF_LONG) == BF_LONG)
@@ -1768,7 +1768,7 @@ int64 battle_calc_damage(struct block_list *src,struct block_list *bl,struct Dam
 							break;
 						case RC2_OGH_ATK_DEF:
 							if (sc->getSCE(SC_GLASTHEIM_ATK))
-								damage <<= 1;
+								damage *= 2;
 							break;
 						case RC2_BIO5_SWORDMAN_THIEF:
 							if (sce = sc->getSCE(SC_LHZ_DUN_N1))
@@ -2795,7 +2795,7 @@ static bool is_attack_critical(struct Damage* wd, struct block_list *src, struct
 		cri -= tstatus->luk * ((!sd && tsd) ? 3 : 2);
 
 		if( tsc && tsc->getSCE(SC_SLEEP) )
-			cri <<= 1;
+			cri *= 2;
 
 		switch(skill_id) {
 			case 0:
@@ -2808,7 +2808,7 @@ static bool is_attack_critical(struct Damage* wd, struct block_list *src, struct
 					(battle_config.auto_counter_type&src->type))
 					return true;
 				else
-					cri <<= 1;
+					cri *= 2;
 				break;
 			case SN_SHARPSHOOTING:
 			case MA_SHARPSHOOTING:
@@ -4062,7 +4062,7 @@ static int battle_calc_attack_skill_ratio(struct Damage* wd, struct block_list *
 		case AS_SONICBLOW:
 #ifdef RENEWAL
 			skillratio += 100 + 100 * skill_lv;
-			if (tstatus->hp < tstatus->max_hp >> 1)
+			if (tstatus->hp < (tstatus->max_hp / 2))
 				skillratio += skillratio / 2;
 #else
 			skillratio += 300 + 40 * skill_lv;
@@ -4245,7 +4245,7 @@ static int battle_calc_attack_skill_ratio(struct Damage* wd, struct block_list *
 		case LK_JOINTBEAT:
 			skillratio += 10 * skill_lv - 50;
 			if (wd->miscflag & BREAK_NECK || (tsc && tsc->getSCE(SC_JOINTBEAT) && tsc->getSCE(SC_JOINTBEAT)->val2 & BREAK_NECK)) // The 2x damage is only for the BREAK_NECK ailment.
-				skillratio <<= 1;
+				skillratio *= 2;
 			break;
 #ifdef RENEWAL
 		// Renewal: skill ratio applies to entire damage [helvetica]
@@ -4839,7 +4839,7 @@ static int battle_calc_attack_skill_ratio(struct Damage* wd, struct block_list *
 			if (sd) {
 				skillratio += pc_checkskill(sd, WM_LESSON) * 50; // !TODO: Confirm bonus
 				if (skill_check_pc_partner(sd, skill_id, &skill_lv, AREA_SIZE, 0) > 0)
-					skillratio <<= 1;
+					skillratio *= 2;
 			}
 			RE_LVL_DMOD(100);
 			break;
@@ -5053,7 +5053,7 @@ static int battle_calc_attack_skill_ratio(struct Damage* wd, struct block_list *
 		case SU_PICKYPECK:
 		case SU_PICKYPECK_DOUBLE_ATK:
 			skillratio += 100 + 100 * skill_lv;
-			if (status_get_hp(target) < status_get_max_hp(target) >> 1)
+			if (status_get_hp(target) < (status_get_max_hp(target) / 2))
 				skillratio *= 2;
 			if (sd && pc_checkskill(sd, SU_SPIRITOFLIFE))
 				skillratio += skillratio * status_get_hp(src) / status_get_max_hp(src);
@@ -6192,7 +6192,7 @@ static struct Damage initialize_weapon_data(struct block_list *src, struct block
 	wd.amotion = (skill_id && skill_get_inf(skill_id)&INF_GROUND_SKILL)?0:sstatus->amotion; //Amotion should be 0 for ground skills.
 	// counter attack DOES obey ASPD delay on official, uncomment if you want the old (bad) behavior [helvetica]
 	/*if(skill_id == KN_AUTOCOUNTER)
-		wd.amotion >>= 1; */
+		wd.amotion /= 2; */
 	wd.dmotion = tstatus->dmotion;
 	wd.blewcount =skill_get_blewcount(skill_id,skill_lv);
 	wd.miscflag = wflag;
@@ -8088,7 +8088,8 @@ struct Damage battle_calc_misc_attack(struct block_list *src,struct block_list *
 				md.damage = (int)((int64)7*tstatus->vit*sstatus->int_*sstatus->int_ / (10*(tstatus->vit+sstatus->int_)));
 			else
 				md.damage = 0;
-			if (tsd) md.damage>>=1;
+			if (tsd)
+				md.damage /= 2;
 #endif
 			break;
 		case NJ_ZENYNAGE:
diff --git a/src/map/mob.cpp b/src/map/mob.cpp
index 00624a213b..0716d42503 100644
--- a/src/map/mob.cpp
+++ b/src/map/mob.cpp
@@ -2618,7 +2618,7 @@ int mob_dead(struct mob_data *md, struct block_list *src, int type)
 		//TODO: Determine if this should go before calculating the MVP player instead of after.
 		if (UINT_MAX - md->dmglog[0].dmg > md->tdmg) {
 			md->tdmg += md->dmglog[0].dmg;
-			md->dmglog[0].dmg<<=1;
+			md->dmglog[0].dmg *= 2;
 		} else {
 			md->dmglog[0].dmg+= UINT_MAX - md->tdmg;
 			md->tdmg = UINT_MAX;
diff --git a/src/map/pc.cpp b/src/map/pc.cpp
index 7f08340594..c5223a71a3 100755
--- a/src/map/pc.cpp
+++ b/src/map/pc.cpp
@@ -10389,7 +10389,7 @@ int pc_itemheal(map_session_data *sd, t_itemid itemid, int hp, int sp)
 	int bonus, tmp, penalty = 0;
 
 	if (hp) {
-		bonus = 100 + (sd->battle_status.vit << 1) + pc_checkskill(sd, SM_RECOVERY) * 10 + pc_checkskill(sd, AM_LEARNINGPOTION) * 5;
+		bonus = 100 + (sd->battle_status.vit * 2) + pc_checkskill(sd, SM_RECOVERY) * 10 + pc_checkskill(sd, AM_LEARNINGPOTION) * 5;
 		// A potion produced by an Alchemist in the Fame Top 10 gets +50% effect [DracoRPG]
 		if (potion_flag == 2) {
 			bonus += bonus * 50 / 100;
@@ -10425,7 +10425,7 @@ int pc_itemheal(map_session_data *sd, t_itemid itemid, int hp, int sp)
 			hp = tmp;
 	}
 	if (sp) {
-		bonus = 100 + (sd->battle_status.int_ << 1) + pc_checkskill(sd, MG_SRECOVERY) * 10 + pc_checkskill(sd, AM_LEARNINGPOTION) * 5;
+		bonus = 100 + (sd->battle_status.int_ * 2) + pc_checkskill(sd, MG_SRECOVERY) * 10 + pc_checkskill(sd, AM_LEARNINGPOTION) * 5;
 		// A potion produced by an Alchemist in the Fame Top 10 gets +50% effect [DracoRPG]
 		if (potion_flag == 2)
 			bonus += bonus * 50 / 100;
diff --git a/src/map/pc.hpp b/src/map/pc.hpp
index addb6d3553..b9a27bbe95 100644
--- a/src/map/pc.hpp
+++ b/src/map/pc.hpp
@@ -1234,7 +1234,7 @@ enum e_mado_type : uint16 {
 	#define pc_leftside_def(sd) ((sd)->battle_status.def)
 	#define pc_rightside_def(sd) ((sd)->battle_status.def2)
 	#define pc_leftside_mdef(sd) ((sd)->battle_status.mdef)
-	#define pc_rightside_mdef(sd) ( (sd)->battle_status.mdef2 - ((sd)->battle_status.vit>>1) )
+	#define pc_rightside_mdef(sd) ( (sd)->battle_status.mdef2 - ((sd)->battle_status.vit / 2) )
 #define pc_leftside_matk(sd) \
     (\
     ((sd)->sc.getSCE(SC_MAGICPOWER) && (sd)->sc.getSCE(SC_MAGICPOWER)->val4) \
diff --git a/src/map/pet.cpp b/src/map/pet.cpp
index 5861481185..f0da9f335a 100644
--- a/src/map/pet.cpp
+++ b/src/map/pet.cpp
@@ -1630,7 +1630,7 @@ int pet_food(map_session_data *sd, struct pet_data *pd)
 			k = pet_db_ptr->r_hungry;
 
 		if( pd->pet.hungry > PET_HUNGRY_NEUTRAL) {
-			k >>= 1;
+			k /= 2;
 			k = max(k, 1);
 		}
 
@@ -1753,7 +1753,7 @@ static int pet_ai_sub_hard(struct pet_data *pd, map_session_data *sd, t_tick tic
 		if (DIFF_TICK(tick, pd->ud.canmove_tick) < 0)
 			return 0; // Can't move yet.
 
-		pd->status.speed = (sd->battle_status.speed>>1);
+		pd->status.speed = (sd->battle_status.speed / 2);
 
 		if(pd->status.speed == 0)
 			pd->status.speed = 1;
diff --git a/src/map/skill.cpp b/src/map/skill.cpp
index 059c8bf483..e7646ddbc5 100755
--- a/src/map/skill.cpp
+++ b/src/map/skill.cpp
@@ -601,7 +601,7 @@ int skill_calc_heal(struct block_list *src, struct block_list *target, uint16 sk
 	}
 
 	if( (!heal || (target && target->type == BL_MER)) && skill_id != NPC_EVILLAND )
-		hp >>= 1;
+		hp /= 2;
 
 	if (sd) {
 		if (pc_checkskill(sd, SU_POWEROFSEA) > 0) {
@@ -2704,7 +2704,7 @@ int skill_counter_additional_effect (struct block_list* src, struct block_list *
 
 			//Physical range attacks only trigger autospells half of the time
 			if ((attack_type&(BF_WEAPON|BF_LONG)) == (BF_WEAPON|BF_LONG))
-				 autospl_rate>>=1;
+				 autospl_rate /= 2;
 
 			dstsd->state.autocast = 1;
 			if ( skill_isNotOk(autospl_skill_id, dstsd) ) {
@@ -9224,13 +9224,13 @@ int skill_castend_nodamage_id (struct block_list *src, struct block_list *bl, ui
 				} else {
 					if( potion_hp > 0 ) {
 						hp = potion_hp * (100 + pc_checkskill(sd,AM_POTIONPITCHER)*10 + pc_checkskill(sd,AM_LEARNINGPOTION)*5)*bonus/10000;
-						hp = hp * (100 + (tstatus->vit<<1)) / 100;
+						hp = hp * (100 + (tstatus->vit * 2)) / 100;
 						if( dstsd )
 							hp = hp * (100 + pc_checkskill(dstsd,SM_RECOVERY)*10) / 100;
 					}
 					if( potion_sp > 0 ) {
 						sp = potion_sp * (100 + pc_checkskill(sd,AM_POTIONPITCHER)*10 + pc_checkskill(sd,AM_LEARNINGPOTION)*5)*bonus/10000;
-						sp = sp * (100 + (tstatus->int_<<1)) / 100;
+						sp = sp * (100 + (tstatus->int_ * 2)) / 100;
 						if( dstsd )
 							sp = sp * (100 + pc_checkskill(dstsd,MG_SRECOVERY)*10) / 100;
 					}
@@ -9257,7 +9257,7 @@ int skill_castend_nodamage_id (struct block_list *src, struct block_list *bl, ui
 					default: hp = 325; break;
 				}
 				hp = (hp + rnd()%(skill_lv*20+1)) * (150 + skill_lv*10) / 100;
-				hp = hp * (100 + (tstatus->vit<<1)) / 100;
+				hp = hp * (100 + (tstatus->vit * 2)) / 100;
 				if( dstsd )
 					hp = hp * (100 + pc_checkskill(dstsd,SM_RECOVERY)*10) / 100;
 			}
@@ -9520,7 +9520,7 @@ int skill_castend_nodamage_id (struct block_list *src, struct block_list *bl, ui
 				status_zap(bl, hp, sp);
 
 				if (hp && skill_lv >= 5)
-					hp>>=1;	//Recover half damaged HP at level 5 [Skotlex]
+					hp /= 2;	//Recover half damaged HP at level 5 [Skotlex]
 				else
 					hp = 0;
 
@@ -10058,8 +10058,8 @@ int skill_castend_nodamage_id (struct block_list *src, struct block_list *bl, ui
 			break;
 		if (potion_hp || potion_sp) {
 			int hp = potion_hp, sp = potion_sp;
-			hp = hp * (100 + (tstatus->vit<<1))/100;
-			sp = sp * (100 + (tstatus->int_<<1))/100;
+			hp = hp * (100 + (tstatus->vit * 2))/100;
+			sp = sp * (100 + (tstatus->int_ * 2))/100;
 			if (dstsd) {
 				if (hp)
 					hp = hp * (100 + pc_checkskill(dstsd,SM_RECOVERY)*10 + pc_skillheal2_bonus(dstsd, skill_id))/100;
@@ -21979,6 +21979,7 @@ bool skill_produce_mix(map_session_data *sd, uint16 skill_id, t_itemid nameid, i
 			default:
 				if (skill_produce_db[idx].itemlv > 10 && skill_produce_db[idx].itemlv <= 20 ) { //Cooking items.
 					clif_specialeffect(&sd->bl, EF_COOKING_FAIL, AREA);
+					// todo: What in the world is this calculation
 					pc_setparam(sd, SP_COOKMASTERY, sd->cook_mastery - ( 1 << ((skill_produce_db[idx].itemlv - 11) / 2) ) - ( ( ( 1 << ((skill_produce_db[idx].itemlv - 11) / 2) ) >> 1 ) * 3 ));
 				}
 				break;
diff --git a/src/map/status.cpp b/src/map/status.cpp
index 8b0a7daa87..43960b3da6 100644
--- a/src/map/status.cpp
+++ b/src/map/status.cpp
@@ -1513,7 +1513,7 @@ int status_damage(struct block_list *src,struct block_list *target,int64 dhp, in
 				}
 			}
 #endif
-			if(sc->getSCE(SC_DANCING) && (unsigned int)hp > status->max_hp>>2)
+			if(sc->getSCE(SC_DANCING) && hp > (status->max_hp / 4))
 				status_change_end(target, SC_DANCING);
 			if(sc->getSCE(SC_CLOAKINGEXCEED) && --(sc->getSCE(SC_CLOAKINGEXCEED)->val2) <= 0)
 				status_change_end(target, SC_CLOAKINGEXCEED);
@@ -1533,7 +1533,7 @@ int status_damage(struct block_list *src,struct block_list *target,int64 dhp, in
 	if (sc && hp && status->hp) {
 		if (sc->getSCE(SC_AUTOBERSERK) &&
 			(!sc->getSCE(SC_PROVOKE) || !sc->getSCE(SC_PROVOKE)->val4) &&
-			status->hp < status->max_hp>>2)
+			status->hp < status->max_hp / 4)
 			sc_start4(src,target,SC_PROVOKE,100,10,0,0,1,0);
 		if (sc->getSCE(SC_BERSERK) && status->hp <= 100)
 			status_change_end(target, SC_BERSERK);
@@ -1751,7 +1751,7 @@ int status_heal(struct block_list *bl,int64 hhp,int64 hsp, int64 hap, int flag)
 		sc->getSCE(SC_AUTOBERSERK) &&
 		sc->getSCE(SC_PROVOKE) &&
 		sc->getSCE(SC_PROVOKE)->val4==1 &&
-		status->hp>=status->max_hp>>2
+		status->hp >= status->max_hp / 4
 	)	// End auto berserk.
 		status_change_end(bl, SC_PROVOKE);
 
@@ -2598,7 +2598,7 @@ void status_calc_misc(struct block_list *bl, struct status_data *status, int lev
 	status->def2 = cap_value(stat, 0, SHRT_MAX);
 	// Mdef2
 	stat = status->mdef2;
-	stat += status->int_ + (status->vit>>1);
+	stat += status->int_ + (status->vit / 2);
 	status->mdef2 = cap_value(stat, 0, SHRT_MAX);
 #endif
 
@@ -2738,18 +2738,18 @@ int status_calc_mob_(struct mob_data* md, uint8 opt)
 
 	if (flag&2 && battle_config.mob_size_influence) { // Change for sized monsters [Valaris]
 		if (md->special_state.size == SZ_MEDIUM) {
-			status->max_hp >>= 1;
-			status->max_sp >>= 1;
+			status->max_hp /= 2;
+			status->max_sp /= 2;
 			if (!status->max_hp) status->max_hp = 1;
 			if (!status->max_sp) status->max_sp = 1;
 			status->hp = status->max_hp;
 			status->sp = status->max_sp;
-			status->str >>= 1;
-			status->agi >>= 1;
-			status->vit >>= 1;
-			status->int_ >>= 1;
-			status->dex >>= 1;
-			status->luk >>= 1;
+			status->str /= 2;
+			status->agi /= 2;
+			status->vit /= 2;
+			status->int_ /= 2;
+			status->dex /= 2;
+			status->luk /= 2;
 			if (!status->str) status->str = 1;
 			if (!status->agi) status->agi = 1;
 			if (!status->vit) status->vit = 1;
@@ -2757,16 +2757,16 @@ int status_calc_mob_(struct mob_data* md, uint8 opt)
 			if (!status->dex) status->dex = 1;
 			if (!status->luk) status->luk = 1;
 		} else if (md->special_state.size == SZ_BIG) {
-			status->max_hp <<= 1;
-			status->max_sp <<= 1;
+			status->max_hp *= 2;
+			status->max_sp *= 2;
 			status->hp = status->max_hp;
 			status->sp = status->max_sp;
-			status->str <<= 1;
-			status->agi <<= 1;
-			status->vit <<= 1;
-			status->int_ <<= 1;
-			status->dex <<= 1;
-			status->luk <<= 1;
+			status->str *= 2;
+			status->agi *= 2;
+			status->vit *= 2;
+			status->int_ *= 2;
+			status->dex *= 2;
+			status->luk *= 2;
 		}
 	}
 
@@ -4208,7 +4208,7 @@ int status_calc_pc_sub(map_session_data* sd, uint8 opt)
 	} else {
 		if((sd->class_&MAPID_BASEMASK) == MAPID_NOVICE && !(sd->class_&JOBL_2)
 			&& battle_config.restart_hp_rate < 50)
-			base_status->hp = base_status->max_hp>>1;
+			base_status->hp = base_status->max_hp / 2;
 		else
 			base_status->hp = (int64)base_status->max_hp * battle_config.restart_hp_rate/100;
 		if(!base_status->hp)
@@ -4336,7 +4336,7 @@ int status_calc_pc_sub(map_session_data* sd, uint8 opt)
 	if((skill=pc_checkskill(sd,TF_MISS))>0)
 		base_status->flee += skill*(sd->class_&JOBL_2 && (sd->class_&MAPID_BASEMASK) == MAPID_THIEF? 4 : 3);
 	if((skill=pc_checkskill(sd,MO_DODGE))>0)
-		base_status->flee += (skill*3)>>1;
+		base_status->flee += (skill*3) / 2;
 	if (pc_checkskill(sd, SU_POWEROFLIFE) > 0)
 		base_status->flee += 20;
 	if ((skill = pc_checkskill(sd, SHC_SHADOW_SENSE)) > 0)
@@ -5105,7 +5105,7 @@ void status_calc_regen(struct block_list *bl, struct status_data *status, struct
 
 	val = 1 + (status->int_/6) + (status->max_sp/100);
 	if( status->int_ >= 120 )
-		val += ((status->int_-120)>>1) + 4;
+		val += ((status->int_-120) / 2) + 4;
 
 	if( sd && sd->sprecov_rate != 100 )
 		val = val*sd->sprecov_rate/100;
@@ -5724,7 +5724,7 @@ void status_calc_bl_main(struct block_list *bl, std::bitset<SCB_MAX> flag)
 #ifdef RENEWAL
 			+ (int)( ((float)status->dex/5 - (float)b_status->dex/5) + ((float)status->vit/5 - (float)b_status->vit/5) )
 #else
-			+ ((status->vit - b_status->vit)>>1)
+			+ ((status->vit - b_status->vit) / 2)
 #endif
 			);
 	}
@@ -5754,7 +5754,7 @@ void status_calc_bl_main(struct block_list *bl, std::bitset<SCB_MAX> flag)
 		/// After status_calc_critical so the bonus is applied despite if you have or not a sc bugreport:5240
 		if (sd) {
 			if (sd->status.weapon == W_KATAR)
-				status->cri <<= 1;
+				status->cri *= 2;
 		}
 	}
 
@@ -7558,7 +7558,7 @@ static defType status_calc_def(struct block_list *bl, status_change *sc, int def
 		if (bl->type == BL_PC)
 			return 0;
 		else
-			return def >>= 1;
+			return def /= 2;
 	}
 	if(sc->getSCE(SC_DEFSET))
 		return sc->getSCE(SC_DEFSET)->val1;
@@ -7583,15 +7583,15 @@ static defType status_calc_def(struct block_list *bl, status_change *sc, int def
 	if(sc->getSCE(SC_STONEHARDSKIN))
 		def += sc->getSCE(SC_STONEHARDSKIN)->val1;
 	if(sc->getSCE(SC_STONE))
-		def >>=1;
+		def /= 2;
 	if(sc->getSCE(SC_FREEZE))
-		def >>=1;
+		def /= 2;
 	if(sc->getSCE(SC_SIGNUMCRUCIS))
 		def -= def * sc->getSCE(SC_SIGNUMCRUCIS)->val2/100;
 	if(sc->getSCE(SC_CONCENTRATION))
 		def -= def * sc->getSCE(SC_CONCENTRATION)->val4/100;
 	if(sc->getSCE(SC_SKE))
-		def >>=1;
+		def /= 2;
 	if(sc->getSCE(SC_PROVOKE) && bl->type != BL_PC) // Provoke doesn't alter player defense->
 		def -= def * sc->getSCE(SC_PROVOKE)->val3/100;
 	if(sc->getSCE(SC_STRIPSHIELD) && bl->type != BL_PC) // Player doesn't have def reduction only equip removed
@@ -7737,7 +7737,7 @@ static defType status_calc_mdef(struct block_list *bl, status_change *sc, int md
 		if (bl->type == BL_PC)
 			return 0;
 		else
-			return mdef >>= 1;
+			return mdef / 2;
 	}
 	if(sc->getSCE(SC_MDEFSET))
 		return sc->getSCE(SC_MDEFSET)->val1;
@@ -9408,7 +9408,7 @@ t_tick status_get_sc_def(struct block_list *src, struct block_list *bl, enum sc_
 				tick_def2 = status->luk*100;
 			} else {
 				// For monsters: 30000 - 200*vit
-				tick>>=1;
+				tick /= 2;
 				tick_def = (status->vit*200)/3;
 			}
 #else
@@ -9512,7 +9512,7 @@ t_tick status_get_sc_def(struct block_list *src, struct block_list *bl, enum sc_
 			break;
 		case SC_DECREASEAGI:
 			if (sd)
-				tick >>= 1; // Half duration for players.
+				tick /= 2; // Half duration for players.
 			sc_def2 = status->mdef*100;
 			break;
 		case SC_ANKLE:
@@ -10496,7 +10496,7 @@ int status_change_start(struct block_list* src, struct block_list* bl,enum sc_ty
 				tick = INFINITE_TICK;
 			break;
 		case SC_AUTOBERSERK:
-			if (status->hp < status->max_hp>>2 &&
+			if (status->hp < status->max_hp / 4 &&
 				(!sc->getSCE(SC_PROVOKE) || sc->getSCE(SC_PROVOKE)->val4==0))
 					sc_start4(src,bl,SC_PROVOKE,100,10,0,0,1,60000);
 			tick = INFINITE_TICK;
@@ -10785,10 +10785,10 @@ int status_change_start(struct block_list* src, struct block_list* bl,enum sc_ty
 
 		case SC_DPOISON:
 			// Lose 10/15% of your life as long as it doesn't brings life below 25%
-			if (status->hp > status->max_hp>>2) {
+			if (status->hp > status->max_hp / 4) {
 				int diff = status->max_hp*(bl->type==BL_PC?10:15)/100;
-				if (status->hp - diff < status->max_hp>>2)
-					diff = status->hp - (status->max_hp>>2);
+				if (status->hp - diff < status->max_hp / 4)
+					diff = status->hp - (status->max_hp / 4);
 				status_zap(bl, diff, 0);
 			}
 			// Fall through
@@ -10909,7 +10909,7 @@ int status_change_start(struct block_list* src, struct block_list* bl,enum sc_ty
 				map_session_data *tsd;
 				int i;
 				for( i = val2 = 0; i < val1; i++) {
-					int t = 5-(i>>1);
+					int t = 5-(i / 2);
 					val2 += (t < 0)? 1:t;
 				}
 
@@ -12255,7 +12255,7 @@ int status_change_start(struct block_list* src, struct block_list* bl,enum sc_ty
 		case SC_TUNAPARTY:
 			val2 = (status->max_hp * (val1 * 10) / 100); // Max HP% to absorb
 			if (sd && pc_checkskill(sd, SU_SPIRITOFSEA))
-				val2 <<= 1; // Double the shield life
+				val2 *= 2; // Double the shield life
 			break;
 		case SC_HISS:
 			val2 = 50; // Perfect Dodge
@@ -14967,7 +14967,7 @@ static int status_natural_heal(struct block_list* bl, va_list args)
 		if(flag&(RGN_SHP)) { // Sitting HP regen
 			rate = (int)(natural_heal_diff_tick * (sregen->rate.hp / 100.));
 			if (regen->state.overweight)
-				rate >>= 1; // Half as fast when overweight.
+				rate /= 2; // Half as fast when overweight.
 			sregen->tick.hp += rate;
 			while(sregen->tick.hp >= (unsigned int)battle_config.natural_heal_skill_interval) {
 				sregen->tick.hp -= battle_config.natural_heal_skill_interval;
@@ -14980,7 +14980,7 @@ static int status_natural_heal(struct block_list* bl, va_list args)
 		if(flag&(RGN_SSP)) { // Sitting SP regen
 			rate = (int)(natural_heal_diff_tick * (sregen->rate.sp / 100.));
 			if (regen->state.overweight)
-				rate >>= 1; // Half as fast when overweight.
+				rate /= 2; // Half as fast when overweight.
 			sregen->tick.sp += rate;
 			while(sregen->tick.sp >= (unsigned int)battle_config.natural_heal_skill_interval) {
 				sregen->tick.sp -= battle_config.natural_heal_skill_interval;