3-202 Full Command and Function Reference
Input/Output:
Level 1/Argument 1 Level 2/Item 1 Level 1/Item 2
“string”
→
1
“string”
→
“substring
unsent
” 0
See also: BUFLEN, SBRK, SRECV, STIME
XNUM
CAS: Convert objects to 12-digit decimal numeric values.
XOR
Type: Function
Description: Exclusive OR Function: Returns the logical exclusive OR of two arguments.
When the arguments are binary integers or strings, XOR does a bit-by-bit (base 2) logical
comparison:
• Binary integer arguments are treated as sequences of bits with length equal to the current
wordsize. Each bit in the result is determined by comparing the corresponding bits (bit
1
and
bit
2
) in the two arguments, as shown in the following table:
bit
1
bit
2
bit
1
XOR bit
2
0 0 0
0 1 1
1 0 1
1 1 0
• String arguments are treated as sequences of bits, using 8 bits per character (that is, using the
binary version of the character code). The two string arguments must be the same length.
When the arguments are real numbers or symbolics, XOR simply does a true/false test. The
result is 1 (true) if either, but not both, arguments are nonzero; it is 0 (false) if both arguments
are nonzero or zero. This test is usually done to compare two test results.
If either or both of the arguments are algebraic objects, then the result is an algebraic of the form
symb
1
XOR symb
2
. Execute →NUM (or set flag –3 before executing XOR) to produce a numeric
result from the algebraic result.
Access: …ã
L LOGIC XOR (ã is the right-shift of the 3key).
!´
BASE L LOGIC XOR ( ´ is the left-shift of the Pkey).
Flags: Binary Integer Wordsize (-5 through -10), Binary Integer Base (-11, -12)
Input/Output:
Level 2/Argument 1 Level 1/Argument 2 Level 1/Item 1
#n
1
#n
2
→
#n
3
“string
1
” “string
2
”
→
“string
3
”
T/F
1
T/F
2
→
0/1
T/F 'symb'
→
'T/F XOR symb'
'symb' T/F
→
'symb XOR T/F'
'symb
1
' 'symb
2
'
→
'symb
1
XOR symb
2
'
See also: AND, NOT, OR
XPON
Type: Function
Description: Exponent Function: Returns the exponent of the argument.