diff --git a/Makefile b/Makefile
index 7545a80..a82fecb 100644
--- a/Makefile
+++ b/Makefile
@@ -24,6 +24,8 @@ else
        Q            =
 endif
 
+CFLAGS=-O2
+
 ifeq "${PROFILING}" "1"
 	CFLAGS += -pg
 	LDFLAGS += -pg
diff --git a/cpu.c b/cpu.c
index 5a26219..e114a61 100644
--- a/cpu.c
+++ b/cpu.c
@@ -49,11 +49,11 @@ int decode(struct simdata_t *simdata){
 				case 0x14:
 				case 0x15:
 					switch(opcode){
-						case 0x01: case 0x11: simdata->exec_data->COND=NONE; break;
-						case 0x02: case 0x12: simdata->exec_data->COND=ZERO; break;
-						case 0x03: case 0x13: simdata->exec_data->COND=NZERO; break;
-						case 0x04: case 0x14: simdata->exec_data->COND=CARRY; break;
-						case 0x05: case 0x15: simdata->exec_data->COND=NCARRY; break;
+						case 0x01: case 0x11: simdata->exec_data->COND=COND_NONE; break;
+						case 0x02: case 0x12: simdata->exec_data->COND=COND_ZERO; break;
+						case 0x03: case 0x13: simdata->exec_data->COND=COND_NZERO; break;
+						case 0x04: case 0x14: simdata->exec_data->COND=COND_CARRY; break;
+						case 0x05: case 0x15: simdata->exec_data->COND=COND_NCARRY; break;
 						default: return 1;
 					}
 					simdata->exec_data->out_op->OP_ADDR=IMMEDIATE;
@@ -262,11 +262,11 @@ int exec(struct simdata_t *simdata){
 		case CALL:
 		case JUMP:
 			switch(simdata->exec_data->COND){
-				case NONE:   condition=1;                              break;
-				case ZERO:   condition=simdata->registers->FLAGS&1;    break;
-				case NZERO:  condition=!(simdata->registers->FLAGS&1); break;
-				case CARRY:  condition=simdata->registers->FLAGS&2;    break;
-				case NCARRY: condition=!(simdata->registers->FLAGS&2); break;
+				case COND_NONE:   condition=1;                              break;
+				case COND_ZERO:   condition=simdata->registers->FLAGS&1;    break;
+				case COND_NZERO:  condition=!(simdata->registers->FLAGS&1); break;
+				case COND_CARRY:  condition=simdata->registers->FLAGS&2;    break;
+				case COND_NCARRY: condition=!(simdata->registers->FLAGS&2); break;
 			}
 			if(condition){
 				if(simdata->exec_data->EXEC_ACTION==CALL){
@@ -314,26 +314,26 @@ int exec(struct simdata_t *simdata){
 						result = simdata->registers->GPR[simdata->exec_data->in_op1->data]>>1;
 						break;
 					case ALU_FDIV:
-						*(float*)&result = *(float*)(&simdata->registers->GPR[simdata->exec_data->in_op2->data])/
-							*(float*)(&simdata->registers->GPR[simdata->exec_data->in_op1->data]);
+						result = ieee754_float_to_uint32(uint32_to_ieee754_float(simdata->registers->GPR[simdata->exec_data->in_op2->data])/
+							uint32_to_ieee754_float(simdata->registers->GPR[simdata->exec_data->in_op1->data]));
 						break;
 					case ALU_FMUL:
-						*(float*)&result = *(float*)(&simdata->registers->GPR[simdata->exec_data->in_op1->data])*
-							*(float*)(&simdata->registers->GPR[simdata->exec_data->in_op2->data]);
+						result = ieee754_float_to_uint32(uint32_to_ieee754_float(simdata->registers->GPR[simdata->exec_data->in_op1->data])*
+							 uint32_to_ieee754_float(simdata->registers->GPR[simdata->exec_data->in_op2->data]));
 						break;
 					case ALU_FADD:
-						*(float*)&result = *(float*)(&simdata->registers->GPR[simdata->exec_data->in_op2->data])+
-							*(float*)(&simdata->registers->GPR[simdata->exec_data->in_op1->data]);
+						result = ieee754_float_to_uint32(uint32_to_ieee754_float(simdata->registers->GPR[simdata->exec_data->in_op2->data])+
+							uint32_to_ieee754_float(simdata->registers->GPR[simdata->exec_data->in_op1->data]));
 						break;
 					case ALU_FSUB:
-						*(float*)&result = *(float*)(&simdata->registers->GPR[simdata->exec_data->in_op2->data])-
-							*(float*)(&simdata->registers->GPR[simdata->exec_data->in_op1->data]);
+						result = ieee754_float_to_uint32(uint32_to_ieee754_float(simdata->registers->GPR[simdata->exec_data->in_op2->data])-
+							uint32_to_ieee754_float(simdata->registers->GPR[simdata->exec_data->in_op1->data]));
 						break;
 					case ALU_FSIN:
-						*(float*)&result = sinf(*(float*)(&simdata->registers->GPR[simdata->exec_data->in_op1->data]));
+						result = ieee754_float_to_uint32(sinf(uint32_to_ieee754_float(simdata->registers->GPR[simdata->exec_data->in_op1->data])));
 						break;
 					case ALU_FCOS:
-						*(float*)&result = cosf(*(float*)(&simdata->registers->GPR[simdata->exec_data->in_op1->data]));
+						result = ieee754_float_to_uint32(cosf(uint32_to_ieee754_float(simdata->registers->GPR[simdata->exec_data->in_op1->data])));
 						break;
 					case ALU_DEC:
 						*(uint32_t*)&result = *(uint32_t*)(&simdata->registers->GPR[simdata->exec_data->in_op1->data])-1;
@@ -485,7 +485,7 @@ int cpu_simdata_malloc(struct simdata_t *simdata){
 	simdata->exec_data=malloc_exec_data();
 	simdata->registers=malloc(sizeof(struct registers_t));
 	simdata->registers->PC=0x00000000;
-	simdata->registers->SP&=0x00FFFFFF; //intentionally leave it uninitialised but within the legal range
+	simdata->registers->SP=0;
 	if((simdata->fetch_data!=NULL)&&(simdata->decode_data!=NULL)&&(simdata->exec_data!=NULL))
 		return 1;
 	else
diff --git a/cpu.h b/cpu.h
index e8b2b08..0e398ec 100644
--- a/cpu.h
+++ b/cpu.h
@@ -55,11 +55,11 @@ struct exec_op_t {
 };
 
 enum COND_t{
-	NONE,
-	ZERO,
-	NZERO,
-	CARRY,
-	NCARRY
+	COND_NONE,
+	COND_ZERO,
+	COND_NZERO,
+	COND_CARRY,
+	COND_NCARRY
 };
 
 struct exec_data_t {
diff --git a/gui.c b/gui.c
index 08a14a2..21f0df7 100644
--- a/gui.c
+++ b/gui.c
@@ -417,7 +417,7 @@ int update_general_memdump(struct simdata_t *simdata){
 		uint32_t ADDRESS=(simdata->registers->PC-n*usable_height/2)&0x00FFFFFF;
 
 		uint32_t color_addr;
-		int have_color;
+		int have_color=0;
 		for(int h=0;h<usable_height;h++){
 			wmove(general_memdump,h+2,2+(width-12)%2);
 			wattroff(general_memdump,A_BOLD);
@@ -597,6 +597,7 @@ void braille_frame_buffer_line(uint8_t *buffer,int buffer_width,int buffer_heigh
 	}
 }
 
+
 int update_general_terminal_output(struct simdata_t *simdata){
 	int width,height;
 	werase(general_terminal_output);
@@ -630,19 +631,19 @@ int update_general_terminal_output(struct simdata_t *simdata){
 						vstate++;
 					break;
 				case 1: /*x of start*/
-					x0=*(float*)&c;
+					x0=uint32_to_ieee754_float(c);
 					vstate++;
 					break;
 				case 2: /*y of start*/
-					y0=*(float*)&c;
+					y0=uint32_to_ieee754_float(c);
 					vstate++;
 					break;
 				case 3: /*x of end*/
-					x1=*(float*)&c;
+					x1=uint32_to_ieee754_float(c);
 					vstate++;
 					break;
 				case 4: /*y of end*/
-					y1=*(float*)&c;
+					y1=uint32_to_ieee754_float(c);
 					float min_dim=(vfb_width>vfb_height)?vfb_height:vfb_width;
 					int xoff=0,yoff=0;
 					x0*=1.25;
diff --git a/simdata.c b/simdata.c
index 1af7b73..4d8c2f9 100644
--- a/simdata.c
+++ b/simdata.c
@@ -85,3 +85,22 @@ void free_simdata(struct simdata_t *p){
 	free(p->terminal_output);
 	free(p);
 }
+
+#if defined ( __STDC_IEC_559__ )
+union U32FLOAT_RETURN{
+	float f;
+	uint32_t u;
+};
+float uint32_to_ieee754_float(uint32_t in){
+	union U32FLOAT_RETURN ret;
+	ret.u=in;
+	return ret.f;
+}
+uint32_t ieee754_float_to_uint32(float in){
+	union U32FLOAT_RETURN ret;
+	ret.f=in;
+	return ret.u;
+}
+#else
+#error Your libc/compiler/architecture doesnt support IEEE 457/IEC 559 Please write a software alternative here
+#endif
diff --git a/simdata.h b/simdata.h
index 9fc78b6..0c76494 100644
--- a/simdata.h
+++ b/simdata.h
@@ -40,6 +40,8 @@ void free_simdata(struct simdata_t *);
 int add_to_instr_list(struct instr_list_t **addr_of_toadd,uint32_t address);
 void free_instr_list(struct instr_list_t **addr_of_tofree);
 int terminal_output(uint32_t c,struct simdata_t *simdata);
+float uint32_to_ieee754_float(uint32_t in);
+uint32_t ieee754_float_to_uint32(float in);
 
 enum GUI_CPU_STATE_t{
 	GUI_CPU_RUNNING,