Compute Fibonacci and Lucas numbers

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Description

fibnum compute n-th Fibonacci number. fibnum2 compute (n-1)-th and n-th Fibonacci number. lucnum compute n-th lucas number. lucnum2 compute (n-1)-th and n-th lucas number.

Fibonacci numbers are define by: Fn=Fn-1 + Fn-2 Lucas numbers are define by: Ln=Fn + 2Fn-1

Usage

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Arguments

n

Integer

Value

Fibonacci numbers and Lucas number.

Author(s)

Antoine Lucas

References

The GNU MP Library, see http://gmplib.org

Examples

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fibnum(10)
fibnum2(10)
lucnum(10)
lucnum2(10)

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