fib

Calculate fibonacci sequence value at the nth position

This function computes the fibonacci number at position n using a recursive approach. The sequence starts with the provided initial values a and b, and continues according to the fibonacci rule where each number is the sum of the two preceding ones.

Arguments

• a - The first number in the sequence (F₀)
• b - The second number in the sequence (F₁)
• n - The position in the sequence to calculate (0-indexed)

Returns

• felt252 - The nth number in the fibonacci sequence

Fully qualified path: alexandria_math::fibonacci::fib

pub fn fib(a: felt252, b: felt252, n: felt252) -> felt252