SWC LISP
Main page - trying to reorganise the LISP content
Operators
Arithmetic Operators
Function Name | Required &Optional ("&") Parameters | Description | Example Text | Example Evaluation | Module |
---|---|---|---|---|---|
+ | number1 number2 &numberN | Adds numbers together | (+ 5 2) | 7 | |
- | number1 number2 &numberN | Subtracts numbers | (- 5 2) | 3 | |
* | number1 number2 &numberN | Multiplies numbers | (* 5 2) | 10 | |
/ | number1 number2 | Divides numbers | (/ 10 2) | 5 | |
abs | number | Returns the absolute value of number | (abs -10) | 10 | (load "mathematics") |
power | number exponent | Returns the value of numberexponent | (power 2 3) | 8 | (load "mathematics") |
minof | list-of-numbers | Returns the minimum value from a list of numbers | (minof '(2 3 7 9 1 18)) | 1 | (load "mathematics") |
maxof | list-of-numbers | Returns the maximum value from a list of numbers | (maxof '(2 3 27 9 1 18)) | 27 | (load "mathematics") |
neg? | number | Returns true if number is negative, nil if positive | (neg? -1) | #t | (load "mathematics") |
pos? | number | Returns true if number is positive, nil if negative | (pos? 1) | #t | (load "mathematics") |
zero? | number | Returns true if number is 0, nil if otherwise | (zero? 0) | #t | (load "mathematics") |
factorial | number | Returns !number | (factorial 5) | 120 | (load "mathematics") |
common-number-format | number | Returns a string with commas separating the thousands | (common-number-format 10000.51) | "10,000.51" | (load "mathematics") |
add-leading-zeros | number &HowManyDigits | Returns a string of value = number, with optional integer HowManyDigits leading zeros. HowManyDigits defaults to 1 | 1. (add-leading-zeros 3) 2. (add-leading-zeros 30) 3. (add-leading-zeros 3 2) 4. (add-leading-zeros 30 2) |
1. "03" 2. "30" 3. "003" 4. "030" |
(load "mathematics") |
Comparison Operators
Function Name | Required &Optional ("&") Parameters | Description | Example Text | Example Evaluation | Testing Status |
---|---|---|---|---|---|
ge? | number1 number2 | Is number1 equal to or greater than number2? | (ge? 5 2) | #t | |
le? | number1 number2 | Is number1 equal to or less than number2? | (le? 5 2) | #f | |
gt? | number1 number2 | Is number1 greater than number2? | (gt? 5 2) | #t | |
lt? | number1 number2 | Is number1 less than number2? | (lt? 5 2) | #f |
Logic Operators
Function Name | Required &Optional ("&") Parameters | Description | Example Text | Example Evaluation | Testing Status |
---|---|---|---|---|---|
and | boolean-expression1 boolean-expression2 &boolean-expressionN | TRUE if all exprs are TRUE | (and? #t #f) | #f | |
or | boolean-expression1 boolean-expression2 &boolean-expressionN | TRUE if one expr is TRUE | (or #t #f) | #t | |
not | boolean-expression1 boolean-expression2 &boolean-expressionN | TRUE if expr is not TRUE | (not #t) | #f |