Tag Archives: STACKFREE

CT_STACKFREE

Posted on by vivaclipper 
 STACKFREE()
 Determines the remaining stack space
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 Syntax

     STACKFREE() --> nFreeByte

 Returns

     STACKFREE() returns the number of bytes available on the stack.

 Description

     This function helps avoid system crashes.  If the returned value falls
     below 100, do not permit deeper branching.  Either change the program so
     that a large nesting depth cannot be reached, or increase the stack size
     when linking.

 Note

     .  The stack is a low-level system area.  Each DO requires some
        memory bytes, before a RETURN can ensue.

 Examples

     .  Query the stack size:

        ? STACKFREE()               // < 100 ??

     .  Link the application within increased stack size:

        RTLINK FI Test /ST:8000

See Also: ALLOFREE()*

 

Tools – Miscellaneous Functions

Posted on by vivaclipper 
Introduction Miscellaneous Functions
ALLOFREE()*  Determines the maximum memory size allocation
BLANK()      Creates a blank value for each data type
COMPLEMENT() Forms the complement value of a data type
DATATYPE()*  Determines the data type of a variable or UDF
GETTIC()     Determines the number of timer ticks
KBDDISABLE() Locks/unlocks the keyboard
KBDEMULATE() Inserts characters into BIOS keyboard buffer to emulate input
KBDSPEED()   Sets keyboard auto repeat speed
KBDSTAT()    Tests for key shift state status, such as Ctrl and Shift
KBDTYPE()    Determines the type of keyboard in use
KEYSEC()     Triggers a key trap after a time delay
KEYTIME()    Triggers a key trap at a specific clock time
MILLISEC()   Time delay in milliseconds
NUL()        Converts the value returned by a function into a null string
SCANKEY()    Queries scan code of keyboard input
SETTIC()     Increases number of time ticks
SHOWKEY()    Continuously displays the INSERT and LOCK status
SOUND()      Creates tones (melodies) by designating frequency and duration
SPEED()      A comparison value used to determine the processor speed
STACKFREE()  Determines the remaining stack space
TOOLVER()    Queries the version number of the Clipper Tools in use
XTOC()       Converts an expression of any data type into a string