Number

• A Number is stored as a 32-bit float.
• Generally, no distinction is made between integers and floating-point values, except in some cases where integers are strictly required.

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Arithmetic

Operator	Description
+	Addition
-	Subtraction
*	Multiply
/	Divide

Info

Number can be added to String to produce a new String:

1 + " Malaysia" is equal to "1 Malaysia"

Warning

Division by zero will result in an error.

Example 1

REPL.IT

Code only

println 1 + 3 / 5;                          // 1.6
println  4 - 3 * (4 - 2 * (6 - 3)) / 3;     // 6
println 0.99999 / 0.99999;                  // 1
println 1 / 0;                              // Division by zero error

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Logical comparisons

Operator	Description
==	Equal to
!=	Not equal to
>	Greater
>=	Greater or equal to
<	Less than
<=	Less or equal to

Info

Logical comparisons return a Boolean.

Example 2

REPL.IT

Code only

println  1 == 1.0;      // true
println 2.999999  < 3;  // true
println 2.9999999 < 3;  // false
println 2.9999999 <= 3; // true
println 2.9999999 > 3;  // false

Question

• From the example above, why is 2.999999 < 3 equal to true

  but

  2.9999999 < 3 equal to false?

• What does this demonstrate about Ari's floating-point numbers?

Answer

Ari's Number is stored as a 32-bit float, so its precision is limited.

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Built-in functions

to_string

to_string(Number) ➟ String

• Converts Number to a String value

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power

power(base: Number, power: Number) ➟ Number

• Returns base ^ power

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log

log(base: Number, value: Number) ➟ Number

• Returns the logarithm of value with the given base

Warning

• The program halts with this error if the log value is invalid (NaN or Inf):

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modulo

modulo(value: Number, modulee: Number) ➟ Number

• Returns the result of value modulo(%) modulee

Warning

• Both value and modulee must be integers. Also, the modulee cannot be zero.

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absolute

absolute(Number) ➟ Number

• Returns the absolute value of the input

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floor

floor(Number) ➟ Number

• Returns the greatest integer less than or equal to the input

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ceiling

ceiling(Number) ➟ Number

• Returns the least integer greater than or equal to the input

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min

min(Number, Number) ➟ Number

• Returns the minimum of the two inputs

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max

max(Number, Number) ➟ Number

• Returns the maximum of the two inputs