diff --git a/ttmath/ttmathbig.h b/ttmath/ttmathbig.h
index 8de297c..56fe1d0 100644
--- a/ttmath/ttmathbig.h
+++ b/ttmath/ttmathbig.h
@@ -3443,13 +3443,13 @@ private:
 	*/
 	int FromString_ReadScientificIfExists(const tchar_t * & source)
 	{
-	int c = 0;
+		uint c = 0;
 
 		bool scientific_read = false;
 		const tchar_t * before_scientific = source;
 
 		if( FromString_TestScientific(source) )
-			c += (size_t)FromString_ReadPartScientific( source, scientific_read );
+			c += FromString_ReadPartScientific( source, scientific_read );
 
 		if( !scientific_read )
 			source = before_scientific;
diff --git a/ttmath/ttmathuint_x86.h b/ttmath/ttmathuint_x86.h
index 88c6e29..e2b404a 100644
--- a/ttmath/ttmathuint_x86.h
+++ b/ttmath/ttmathuint_x86.h
@@ -104,7 +104,7 @@ namespace ttmath
 
 				inc edx
 				dec ecx
-			jnz p
+				jnz p
 
 				setc al
 				movzx eax, al
@@ -192,12 +192,12 @@ namespace ttmath
 
 			p:
 				add [ebx+edx*4], eax
-			jnc end
+				jnc end
 
 				mov eax, 1
 				inc edx
 				dec ecx
-			jnz p
+				jnz p
 
 			end:
 				setc al
@@ -302,12 +302,12 @@ namespace ttmath
 			
 			p:
 				adc [ebx+edx*4], eax
-			jnc end
+				jnc end
 
 				mov eax, 0
 				inc edx
 				dec ecx
-			jnz p
+				jnz p
 
 			end:
 				setc al
@@ -398,7 +398,7 @@ namespace ttmath
 
 				inc edx
 				dec ecx
-			jnz p
+				jnz p
 
 				setc al
 				movzx eax, al
@@ -482,12 +482,12 @@ namespace ttmath
 
 			p:
 				sub [ebx+edx*4], eax
-			jnc end
+				jnc end
 
 				mov eax, 1
 				inc edx
 				dec ecx
-			jnz p
+				jnz p
 
 			end:
 				setc al
@@ -569,7 +569,7 @@ namespace ttmath
 				
 				inc edx
 				dec ecx
-			jnz p
+				jnz p
 
 				setc dl
 				movzx eax, dl
@@ -644,7 +644,7 @@ namespace ttmath
 				rcr dword ptr [ebx+ecx*4-4], 1
 				
 				dec ecx
-			jnz p
+				jnz p
 
 				setc cl
 				movzx eax, cl
@@ -724,7 +724,7 @@ namespace ttmath
 				or eax, eax
 				cmovnz esi, [mask] // if c then old value = mask
 
-		p:
+			p:
 				rol dword ptr [ebx+edx*4], cl
 				
 				mov eax, [ebx+edx*4]
@@ -735,7 +735,7 @@ namespace ttmath
 
 				inc edx
 				dec edi
-			jnz p
+				jnz p
 
 				and eax, 1
 			}
@@ -850,7 +850,7 @@ namespace ttmath
 
 				dec edx
 				dec edi
-			jnz p
+				jnz p
 
 				rol eax, 1    // bit 31 will be bit 0
 				and eax, 1  
@@ -974,14 +974,14 @@ namespace ttmath
 		#ifndef __GNUC__
 			__asm
 			{
-			mov eax, [v]
-			mov ebx, [bit]
-			bts eax, ebx
-			mov [v], eax
+				mov eax, [v]
+				mov ebx, [bit]
+				bts eax, ebx
+				mov [v], eax
 
-			setc bl
-			movzx ebx, bl
-			mov eax, ebx
+				setc bl
+				movzx ebx, bl
+				mov eax, ebx
 			}
 		#endif
 
@@ -1034,11 +1034,11 @@ namespace ttmath
 
 			__asm
 			{
-			mov eax, [a]
-			mul dword ptr [b]
+				mov eax, [a]
+				mul dword ptr [b]
 
-			mov [result2_], edx
-			mov [result1_], eax
+				mov [result2_], edx
+				mov [result1_], eax
 			}
 
 		#endif
diff --git a/ttmath/ttmathuint_x86_amd64_msvc.asm b/ttmath/ttmathuint_x86_amd64_msvc.asm
index 4f246e7..175b544 100644
--- a/ttmath/ttmathuint_x86_amd64_msvc.asm
+++ b/ttmath/ttmathuint_x86_amd64_msvc.asm
@@ -42,11 +42,14 @@ adc_x64				PROC
 		
 		jnz		loop1
 		
-		setc	al
-		movzx	rax, al
+		jc		return_1	; most of the times, there will be NO carry (I hope)
+		xor		rax, rax
+		ret
+	
+  return_1:
+		mov		rax, 1
+		ret
 		
-        ret
-
 adc_x64				ENDP
 
 ;----------------------------------------
@@ -73,10 +76,13 @@ loop1:
 		jnz		loop1
 		
 done:
-		setc	al
-		movzx	rax, al
-		
-        ret
+		jc		return_1	; most of the times, there will be NO carry (I hope)
+		xor		rax, rax
+		ret
+	
+  return_1:
+		mov		rax, 1
+		ret
 
 addindexed_x64	ENDP
 
@@ -110,10 +116,13 @@ loop1:
 		jnz		loop1
 		
 done:
-		setc	al
-		movzx	rax, al
-		
-        ret
+		jc		return_1	; most of the times, there will be NO carry (I hope)
+		xor		rax, rax
+		ret
+	
+  return_1:
+		mov		rax, 1
+		ret
 
 addindexed2_x64	ENDP
 
@@ -144,10 +153,13 @@ sbb_x64				PROC
 		
 		jnz		loop1
 		
-		setc	al
-		movzx	rax, al
-		
-        ret
+		jc		return_1	; most of the times, there will be NO carry (I hope)
+		xor		rax, rax
+		ret
+	
+  return_1:
+		mov		rax, 1
+		ret
 
 sbb_x64				ENDP
 
@@ -174,10 +186,13 @@ loop1:
 		jnz		loop1
 		
 done:
-		setc	al
-		movzx	rax, al
-		
-        ret
+		jc		return_1	; most of the times, there will be NO carry (I hope)
+		xor		rax, rax
+		ret
+	
+  return_1:
+		mov		rax, 1
+		ret
 
 subindexed_x64	ENDP
 
@@ -270,6 +285,8 @@ rcl2_x64	PROC
         ; r8 = bits
         ; r9 = c
         
+        push	rbx
+        
         mov		r10, rcx	; r10 = p1
         xor		rax, rax	
         
@@ -301,6 +318,7 @@ loop1:
 		jnz		loop1
 
 		and		rax, 1
+		pop		rbx
         ret
 				
 rcl2_x64	ENDP				
@@ -317,6 +335,7 @@ rcr2_x64	PROC
         ; r8 = bits
         ; r9 = c
         
+        push	rbx
         mov		r10, rcx	; r10 = p1
         xor		rax, rax	
         
@@ -350,6 +369,7 @@ loop1:
 		
 		rol		rax, 1
 		and		rax, 1
+		pop		rbx
 		
         ret