Predefined functions

HBasic provides some predefined functions for different purposes. This document list all this functions and their parameter types.
Contents:

Handling integer and double numbers
String handling
Type conversion
Trigonometric functions
Logarithmic functions
Bit manipulation
Date and Time
System information
Other functions

Some base-types like Date, Time or File have been dropped from the normal HBasic type list and replaced by a component type. You can find the methods to work with this types in the package description of the matching packages.

See also: Predefined constants

Handling integer and double numbers

Min	Returns minimum of 2 integer values
Max	Returns maximum of 2 integer values
SQrt	Returns squareroot of a double number
Abs	Returns absolute value of a number
And
Or
Xor
Not

String handling

Len	Returns length of a string
Left	Returns leftmost substring from string
Right	Returns rightmost substring from string
Mid	Return substring of string
Lower	Returns string converted to lowercase letters
Upper	Returns string converted to uppercase letters

Type conversion

Str	Returns a string from an integer or double number
ToLong	Return an integer number from a string
ToDouble	Returns a double number from a string

Trigonometric functions

Sin	Return a double specifying the sine of an angle
Cos	Return a double specifying the cosine of an angle
Tan	Return a double specifying the tangent of an angle
ASin	Return a double specifying the arcsine of an angle
ACos	Return a double specifying the arc cosine of an angle
ATan	Return a double specifying the arc tangent of an angle
Sinh	Return a double specifying the sine hyperbolic of an angle
Cosh	Return a double specifying the cosine hyperbolic of an angle
Tanh	Return a double specifying the tangent hyperbolic of an angle
ASinh	Return a double specifying the arc sine hyperbolic of an angle
ACosh	Return a double specifying the arc cosine hyperbolic of an angle
ATanh	Return a double specifying the arc tangent hyperbolic of an angle

Logarithmic functions

Log	Returns a double specifying the natural logarithm of a number
Log2
Log10
Exp	Returns a Double specifying e (the base of natural logarithm) raised to a power
Exp2	Returns a Double specifying 2 raised to a power
Exp10	Returns a Double specifying 10 raised to a power

Bit manipulation

BSet	Set bit in number at a given position
BClr	Clear bit in number at a given position
BChg	Change bit 0<->1 in number at given position
BTst	Check if bit at position is set (=1)
Bit	Return number with 1 bit set to 1

Date and Time

Day	Return current day in month
Month	Return current month
Year	Return current year
Hour	Return hour from current time
Minute	Return minute from current time
Second	Return second from current time
DayOfWeek	Return current day in week as number
DayOfYear	Return current day of year
DaysInMonth	Return number of days in current month
DaysInYear	Return number of days in current year
WeekNumber	Return week number for current date
DayName	Return name of day
MonthName	Return name of month
ShortDayName	Return 3 character name of day
ShortMonthName	Return 3 character name of month

System information

BufferRam	Get memory used by buffers
FreeHigh	Get available high memory size
FreeRam	Get size of free memory
FreeSwap	Get available swap memory size
MemUnit	Get memory unit size
NumProcs	Get number of running processes
Sleep	Let process sleep some time
SharedRam	Get shared ram total size
Sysload1	Get average system load of last minute
Sysload5	Get average system load of last 5 minutes
Sysload15	Get average system load of last 15 minutes
TotalHigh	Get total high memory size
TotalSwap	Get total swap size
TotalRam	Get total ram size
Uptime	Get uptime of computer in seconds

Other functions

MsgBox	Display messagebox in current window
Seed	Set seed for random number generator
Rand	Get random number
System	Start Linux shell command
Load	Load another form
Abort	Abort program with error state
Sleep	Let process sleep some time