clean up confusion about function template

Reviewed-on: #12

imath.asm

@@ -1,8 +1,15 @@
+; Multiplies r1 and r2, returning the lower part of the result
+; Arguments:
+; r1 - The first value
+; r2 - The second value
+; Result:
+; r1 - The lower 32 bits of the result
+; Clobbers: r2, r3, r4, r5
 pub mul_low:
 	mov r3, 0 ; result
 	mov r4, 31 ; loop counter
 	
-	mull_loop:
+	mul_low_loop:
 		asr r5, r2, 31
 		and r5, r5, r1
 		lsl r5, r5, r4
@@ -10,14 +17,18 @@ pub mul_low:
 		lsl r2, r2, 1
 		sub r4, r4, 1
 		cmp r4, 0
-		jge mull_loop
+		jge mul_low_loop
 	mov r1, r3
 	
 	jmp r13
 
 ; Calculates the absolute value of the value provided in the r1 register
-; Based on Stanford's BitHacks
-; Clobbers r2
+; Arguments:
+; r1 - The value for which we want the absolute value
+; Result:
+; r1 - The calculated absolute value
+; Clobbers: r2
+; Info: Based on Stanford's BitHacks
 pub abs: ; SHOULD BE INLINED
 	; mask = v >> 31
 	asr r2, r1, 31
@@ -28,8 +39,13 @@ pub abs: ; SHOULD BE INLINED
 	jmp r13
 
 ; Calculates the minimum value of the two values provided in the r1 and r2 registers
-; Based on Stanford's BitHacks
-; Clobbers flags
+; Arguments:
+; r1 - The first value
+; r2 - The second value
+; Result:
+; r1 - The smaller value
+; Clobbers: Nothing
+; Info: Based on Stanford's BitHacks
 pub min: ; SHOULD BE INLINED
 	; x < y
 	cmp r1, r2
@@ -45,8 +61,13 @@ pub min: ; SHOULD BE INLINED
 	jmp r13
 
 ; Calculates the maximum value of the two values provided in the r1 and r2 registers
-; Based on Stanford's BitHacks
-; Clobbers r2 and flags
+; Arguments:
+; r1 - The first value
+; r2 - The second value
+; Result:
+; r1 - The smaller value
+; Clobbers: r2
+; Info: Based on Stanford's BitHacks
 pub max: ; SHOULD BE INLINED
 	; x < y
 	cmp r1, r2