Date/Time and Environment
|
Date and time functions read the system time and convert time values in seconds to the familiar human readable forms and vice versa.
|
Operator
|
Meaning
|
Example
|
Result
|
|
DATE
|
String to seconds
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DATE("1 JAN 1980")
|
2.11182336E+11
|
|
DATE$
|
Seconds to string
|
DATE$(2.11182336E+11)
|
"1 JAN 1980"
|
|
TIME
|
String to seconds
|
TIME("01:00:00")
|
3600
|
|
TIME$
|
Seconds to string
|
TIME$(2.11182336E+11)
|
"00:00:00"
|
|
TIMEDATE
|
Present time/date
|
TIMEDATE
|
seconds
|
Environment functions return information about the HTBasic environment. The SYSTEM$ function, particularly, provides a wealth of information and is explained in detail later in this section.
|
Operator
|
Meaning
|
Example
|
Result
|
|
CHRX
|
Character cell width
|
CHRX
|
8
|
|
CHRY
|
Character cell height
|
CHRY
|
14
|
|
COMMAND$
|
Command line
|
COMMAND$
|
"-O -Z 2"
|
|
CRT
|
Display ISC
|
CRT
|
1
|
|
ENVIRON$
|
Environment variable
|
ENVIRON$("PATH")
|
"C:\;C:\Windows"
|
|
FRE
|
Available Memory
|
FRE
|
300000
|
|
KBD
|
Keyboard ISC
|
KBD
|
2
|
|
MAXREAL
|
Largest REAL number
|
MAXREAL
|
1.798E+308
|
|
MINREAL
|
Smallest REAL number
|
MINREAL
|
2.225E-308
|
|
NPAR
|
Number of parameters
|
NPAR
|
0
|
|
PRT
|
Printer device selector
|
PRT
|
10
|
|
RATIO
|
Graphic screen ratio
|
RATIO
|
1.48
|
|
SYSTEM$
|
System information
|
SYSTEM$("MSI")
|
"C:\"
|