--- title: Internal Functions slug: gpc/gpc-scripting-internal-functions description: Here are the Cronus Zen Internal Functions. icon: ◼️ docTags: createdAt: 2021-12-04T12:30:39.000Z --- Within this section of the guide, you will find the functions and commands the Virtual Machine uses to handle data in GPC scripts. # BIT Functions | Function | Description | | ---------- | -------------------------------- | | set\_bit | Sets one Bit. | | clear\_bit | Clears one Bit. | | test\_bit | Tests a Bit. | | set\_bits | Stores a value into a Bit Index. | | get\_bits | Gets a value from the Bit Index. | Internal functions for Bit Functions can be found here: [Bit Functions](docId\:h1DkY5ZMfXzAblNLU22PS) # Combo Functions | Function | Description | | ----------------------- | --------------------------------------------------------- | | combo\_run | Runs a combo. | | combo\_running | Checks if a combo is running. | | combo\_stop | Stops a running combo. | | combo\_restart | Restarts a running combo. | | combo\_suspend | Suspends (pauses) a combo. | | combo\_suspended | Checks if a combo is in the suspended state. | | combo\_current\_step | keywords returning the current step. | | combo\_step\_time\_left | the time left of the currently executed step. | | combo\_stop\_all | Stops all combos. | | combo\_suspend\_all | Suspends (pauses) all combos. | | combo\_resume | Resumes the suspended combo or the already running combo. | | combo\_resume\_all | Resumes all suspended combos. | Internal functions for Combo Functions can be found here: [Combo Functions](docId:-m1iBXQjaDRiv0mvlFexT) # Math Functions | Function | Description | | -------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | abs | Returns an absolute value of a number. | | inv | Returns the inverse value of a number. | | pow | Raise and value to the specified power. | | isqrt | Calculates an integer square root. | | random | Generates a random value between the specified range. | | clamp | The clamp() function clamps a value between an upper and lower bound. clamp() enables selecting a middle value within a range of values between a defined minimum and maximum. It takes three parameters: a minimum value, a preferred value, and a maximum allowed value. | | min | Gets the minimum of two values. | | max | Gets the maximum of two values. | Internal functions for Math Functions can be found here: [Math Functions](docId:7B7TaVhfM58PGrKpQ40xY) # Device Functions | Function | Description | | --------------- | ------------------------------------------------------------------------------------------ | | get\_rtime | Returns the elapsed time between **main** iterations in milliseconds | | get\_slot | Returns the active slot number. | | load\_slot | Loads a specified slot. | | get\_ctrlbutton | Returns the identifier of the controller button. | | vm\_tctrl | Sets the vm timeout for the next iteration. | | set\_polar | Sets the stick output at a given angle and radius with a high resolution value. | | get\_polar | Retrieves the current angle or radius of either the left or right analog stick. | | get\_ipolar | Retrieves the current unmodified angle or radius of either the left or right analog stick. | | set\_rgb | Sets the LED on the ZEN to the supplied RGB color. | | set\_hsb | Sets the LED on the ZEN to the supplied HSB color. | | get\_info | Detects the state of the MK Profile in use. | Internal functions for Device Functions can be found here: [Device Functions](docId\:MnByBJvuA-70EtUwsB-J8) # LED Display Functions | Function | Description | | ------------ | ------------------------------------------------------------------- | | pixel\_oled | Draws a pixel on the OLED display. | | line\_oled | Draws a line on the OLED display. | | rect\_oled | Draws a rectangle on the OLED display. | | circle\_oled | Draws a circle on the OLED display. | | putc\_oled | Puts a character into the string buffer for puts\_oled. | | puts\_oled | Draws the characters supplied using putc\_oled on the OLED display. | | cls\_oled | Sets the entire OLED display to a single color. | | print | Draws a string on the OLED display. | Internal functions for OLED Display Functions can be found here: [OLED Display Functions](docId\:kefHSOSOdthztS87OP_sZ)