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content-type: "page"
title: "num Module"
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{@ _defs_.md || 0 @}

{#op||+||{{n1}} {{n2}}||{{n3}}||
Sums {{n1}} and {{n2}}. #}

{#op||-||{{n1}} {{n2}}||{{n3}}||
Subtracts {{n2}} from {{n1}}. #}

{#op||-inf||{{null}}||{{n}}||
Returns negative infinity. #}

{#op||\*||{{n1}} {{n2}}||{{n3}}||
Multiplies {{n1}} by {{n2}}. #}

{#op||/||{{n1}} {{n2}}||{{n3}}||
Divides {{n1}} by {{n2}}. #}

{#op||even?||{{i}}||{{b}}||
Returns {{t}} if {{i}} is even, {{f}} otherwise. #}

{#op||div||{{i1}} {{i2}}||{{i3}}||
Divides {{i1}} by {{i2}} (integer division). #}

{#op||inf||{{null}}||{{n}}||
Returns infinity. #}

{#op||mod||{{i1}} {{i2}}||{{i3}}||
Returns the integer module of {{i1}} divided by {{i2}}. #}

{#op||nan||{{null}}||nan||
Returns **NaN** (not a number). #}

{#op||odd?||{{i}}||{{b}}||
Returns {{t}} if {{i}} is odd, {{f}} otherwise. #}

{#op||pred||{{i1}}||{{i2}}||
Returns the predecessor of {{i1}}.#}

{#op||random||{{i1}}||{{i2}}||
> Returns a random number {{i2}} between 0 and {{i1}}-1. 
> 
> %note%
> Note
> 
> You must call `randomize` to initialize the random number generator, otherwise the same sequence of numbers will be returned.#}

{#op||randomize||{{null}}||{{null}||
Initializes the random number generator using a seed based on the current timestamp. #}

{#op||succ||{{i1}}||{{i2}}||
Returns the successor of {{i1}}.#}

{#op||sum||{{q}}||{{i}}||
Returns the sum of all items of {{q}}. {{q}} is a quotation of integers. #}