Updates/fixes to NTSL

- Fixed NTSL division
  - Added new NTSL math functions
  - Added changelog information

code/modules/scripting/Implementations/Telecomms.dm

@@ -190,6 +190,11 @@
 		interpreter.SetProc("randseed", /proc/n_randseed)
 		interpreter.SetProc("min", /proc/n_min)
 		interpreter.SetProc("max", /proc/n_max)
+		interpreter.SetProc("sin", /proc/n_sin)
+		interpreter.SetProc("cos", /proc/n_cos)
+		interpreter.SetProc("asin", /proc/n_asin)
+		interpreter.SetProc("acos", /proc/n_acos)
+		interpreter.SetProc("log", /proc/n_log)
 
 		// Time
 		interpreter.SetProc("time", /proc/n_time)

code/modules/scripting/Implementations/_Logic.dm

@@ -262,6 +262,31 @@
 	if(isnum(num)&&isnum(min)&&isnum(max))
 		return ((min <= num) && (num <= max))
 
+// Returns the sine of num
+/proc/n_sin(var/num)
+	if(isnum(num))
+		return sin(num)
+
+// Returns the cosine of num
+/proc/n_cos(var/num)
+	if(isnum(num))
+		return cos(num)
+
+// Returns the arcsine of num
+/proc/n_asin(var/num)
+	if(isnum(num)&&-1<=num&&num<=1)
+		return arcsin(num)
+
+// Returns the arccosine of num
+/proc/n_acos(var/num)
+	if(isnum(num)&&-1<=num&&num<=1)
+		return arccos(num)
+
+// Returns the natural log of num
+/proc/n_log(var/num)
+	if(isnum(num)&&0<num)
+		return log(num)
+
 // Replace text
 /proc/n_replace(text, find, replacement)
 	if(istext(text) && istext(find) && istext(replacement))

code/modules/scripting/Interpreter/Evaluation.dm

@@ -134,7 +134,7 @@
 			else if(isobject(b) && !isobject(a))
 				RaiseError(new/runtimeError/TypeMismatch("/", a, b))
 				return null
-			if(b==0)
+			if(b==0 || b==null)
 				RaiseError(new/runtimeError/DivisionByZero())
 				return null
 			return a/b
@@ -166,4 +166,4 @@
 	//Unary//
 		Minus(a)						return -a
 		LogicalNot(a)				return !a
-		BitwiseNot(a)				return ~a
+		BitwiseNot(a)				return ~a

code/modules/scripting/Scanner/Scanner.dm

@@ -118,13 +118,14 @@
 		for(, src.codepos<=lentext(code), src.codepos++)
 
 			var/char=copytext(code, codepos, codepos+1)
+			var/nextchar=copytext(code, codepos+1, codepos+2)
 			if(char=="\n")
 				line++
 				linepos=codepos
 
 			if(ignore.Find(char))
 				continue
-			else if(char == "/")
+			else if(char == "/" && (nextchar == "/" || nextchar == "*"))
 				ReadComment()
 			else if(end_stmt.Find(char))
 				tokens+=new /token/end(char, line, COL)