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")
|
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 |
|
