Syntax:
1+ number => successor
1- number => predecessor
Arguments and Values:
number---a number.
successor, predecessor---a number.
Description:
1+ returns a number that is one more than its argument number. 1- returns a number that is one less than its argument number.
Examples:
(1+ 99) => 100 (1- 100) => 99 (1+ (complex 0.0)) => #C(1.0 0.0) (1- 5/3) => 2/3
Affected By: None.
Exceptional Situations:
Might signal type-error if its argument is not a number. Might signal arithmetic-error.
See Also:
Notes:
(1+ number) == (+ number 1) (1- number) == (- number 1)Implementors are encouraged to make the performance of both the previous expressions be the same.
RetroSearch is an open source project built by @garambo | Open a GitHub Issue
Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4