Added floor(), ceil() and log() functions for usage in scripts.

doc/script_commands.txt

@@ -7646,6 +7646,34 @@ Example:
 
 ---------------------------------------
 
+
+*floor(<number>)
+
+Returns the number rounded down.
+
+Example:
+	.@i = floor(2.5); // .@i will be 2
+
+---------------------------------------
+
+*ceil(<number>)
+
+Returns the number rounded up.
+
+Example:
+	.@i = ceil(2.5); // .@i will be 3
+
+---------------------------------------
+
+*log(<number>)
+
+Returns log base 10 of the number.
+
+Example:
+	.@i = log(100); // .@i will be 2
+
+---------------------------------------
+
 *sqrt(<number>)
 
 Returns square-root of number.

src/map/script.c

@@ -15476,8 +15476,35 @@ BUILDIN(compare)
 	return true;
 }
 
-// [zBuffer] List of mathematics commands --->
-BUILDIN(sqrt)
+// List of mathematics commands --->
+BUILDIN(floor)
+{
+	double i, a;
+	i = script_getnum(st,2);
+	a = floor(i);
+	script_pushint(st,(int)a);
+	return true;
+}
+
+BUILDIN(ceil)
+{
+	double i, a;
+	i = script_getnum(st,2);
+	a = ceil(i);
+	script_pushint(st,(int)a);
+	return true;
+}
+
+BUILDIN(log)
+{
+	double i, a;
+	i = script_getnum(st,2);
+	a = log(i);
+	script_pushint(st,(int)a);
+	return true;
+}
+
+BUILDIN(sqrt) //[zBuffer]
 {
 	double i, a;
 	i = script_getnum(st,2);
@@ -15486,7 +15513,7 @@ BUILDIN(sqrt)
 	return true;
 }
 
-BUILDIN(pow)
+BUILDIN(pow) //[zBuffer]
 {
 	double i, a, b;
 	a = script_getnum(st,2);
@@ -15496,7 +15523,7 @@ BUILDIN(pow)
 	return true;
 }
 
-BUILDIN(distance)
+BUILDIN(distance) //[zBuffer]
 {
 	int x0, y0, x1, y1;
 
@@ -15509,7 +15536,7 @@ BUILDIN(distance)
 	return true;
 }
 
-// <--- [zBuffer] List of mathematics commands
+// <--- List of mathematics commands
 
 BUILDIN(min)
 {
@@ -20052,11 +20079,14 @@ void script_parse_builtin(void) {
 		BUILDIN_DEF(getiteminfo,"ii"), //[Lupus] returns Items Buy / sell Price, etc info
 		BUILDIN_DEF(setiteminfo,"iii"), //[Lupus] set Items Buy / sell Price, etc info
 		BUILDIN_DEF(getequipcardid,"ii"), //[Lupus] returns CARD ID or other info from CARD slot N of equipped item
-		// [zBuffer] List of mathematics commands --->
-		BUILDIN_DEF(sqrt,"i"),
-		BUILDIN_DEF(pow,"ii"),
-		BUILDIN_DEF(distance,"iiii"),
-		// <--- [zBuffer] List of mathematics commands
+		// List of mathematics commands --->
+		BUILDIN_DEF(floor,"i"),
+		BUILDIN_DEF(ceil,"i"),
+		BUILDIN_DEF(log,"i"),
+		BUILDIN_DEF(sqrt,"i"), //[zBuffer]
+		BUILDIN_DEF(pow,"ii"), //[zBuffer]
+		BUILDIN_DEF(distance,"iiii"), //[zBuffer]
+		// <--- List of mathematics commands
 		BUILDIN_DEF(min, "i*"),
 		BUILDIN_DEF(max, "i*"),
 		BUILDIN_DEF(md5,"s"),