|
|
|
|
|
|
|
Usage: h$=HEX$(x&)
Returns a string containing the hexadecimal (base 16) representation of integer or long integer x&.
For example HEX$(255) returns the string "FF".
To enter integer hexadecimal constants (16 bit) put a $ in front of them. For example $FF is 255 in decimal. (Don’t confuse this use of $ with string variable names.)
To enter long integer hexadecimal constants (32 bit) put a & in front of them. For example &FFFFF is 1048575 in decimal.
Counting in hexadecimal is done like this: 0 1 2 3 4 5 6 7 8 9 A B C D E F 10... where A stands for decimal 10, B for decimal 11, C for decimal 12 ... up to F for decimal 15. After F comes 10, which is equivalent to decimal 16. To understand numbers greater than hexadecimal 10, again compare hexadecimals with decimals. In these examples, 102 means 10 × 10, 103 means 10 × 10 × 10 and so on.
253 in decimal is:
(2 × 102)+(5 × 101)+(3 × 100) = (2 × 100)+(5 × 10)+(3 × 1) = 200+50+3
By analogy, &253 in hexadecimal is:
(&2 × 162)+(&5 × 161)+(&3 × 160) =(2 × 256)+(5 × 16)+(3 × 1) =512+80+3 = 595 in decimal.
Similarly, &A6B in hexadecimal is:
(&A × 162)+(&6 × 161)+(&B × 160) =(10 × 256)+(6 × 16)+(11 × 1) =2560+96+11 = 2667 in decimal.
You may also find this table useful for converting between hex and decimal:
|
hex |
decimal |
|
|
&1 |
1 |
=160 |
|
&10 |
16 |
=161 |
|
&100 |
256 |
=162 |
|
&1000 |
4096 |
=163 |
For example, &20F9 is
(2 × &1000)+(0 × &100)+(15 × &10)+9 which in decimal is: (2 × 4096)+(0 × 256)+(15 × 16)+9 = 8441.
All hexadecimal constants are integers ($) or long integers (&). So arithmetic operations involving hexadecimal numbers behave in the usual way. For example, &3/&2 returns 1, &3/2.0 returns 1.5, 3/$2 returns 1.
Usage: h%=HOUR
Returns the number of the current hour from the system clock as an integer between 0 and 23.
|
|
|
|
|
|
|