---
name: "Math::Fibonacci"
section: "3pm"
platform: "linux"
package: "libmath-fibonacci-perl"
version: "1.5-7"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Math::Fibonacci"
---

# Math::Fibonacci(3pm)

Fibonacci numbers.

## NAME

Math::Fibonacci - Fibonacci numbers.

## VERSION

```
    $Revision: 1.5 $
```

## SYNOPSIS

```
    use Math::Fibonacci qw(term series decompose);
    my $term = term ( 42 );
    my @series = series ( 42 );
    my @sum = decompose ( 65535 );
```

## DESCRIPTION

This module provides a few functions related to Fibonacci numbers.

## EXPORTS ON REQUEST

**term()**, **series()** **decompose()**, **isfibonacci()**

## FUNCTIONS

- **term($n)**

  Returns the `$n`-th term of the Fibonacci sequence. The term is computed using the fast algorithm: `"F(n) ~ g^n/sqrt(5)"`, where g is the golden ratio and ~ means "take the nearest integer".

- **series($n)**

  Computes and returns the first `$n` Fibonacci numbers.

- **decompose($int)**

  Decomposes `$int` into the sum of Fibonacci numbers. Returns the list of Fibonacci numbers.

- **isfibonacci($int)**

  Returns the sequence number of `$int` if it is a Fibonacci number or a non-true value if it is not.

## AUTHOR

Vipul Ved Prakash, \<mail@vipul.net\>

## LICENSE

Copyright (c) 1999-2001, Vipul Ved Prakash.

This code is free software; you can redistribute it and/or modify it under the ARTISTIC license (a copy is included in the distribution) or under the same terms as Perl itself.