note
	description: "Prime number properties"
	library: "Free implementation of ELKS library"
	status: "See notice at end of class."
	legal: "See notice at end of class."
	names: primes
	date: "$Date: 2018-10-03 13:41:17 +0000 (Wed, 03 Oct 2018) $"
	revision: "$Revision: 102260 $"

class interface
	PRIMES

create 
	default_create

feature -- Access

	Smallest_prime: INTEGER_32 = 2

	Smallest_odd_prime: INTEGER_32 = 3

	higher_prime (n: INTEGER_32): INTEGER_32
			-- Lowest prime greater than or equal to n
		ensure
			instance_free: class

	lower_prime (n: INTEGER_32): INTEGER_32
			-- Greatest prime lower than or equal to n
		require
			argument_big_enough: n >= Smallest_prime
		ensure
			instance_free: class

	all_lower_primes (n: INTEGER_32): ARRAY [BOOLEAN]
			-- Array of n boolean values, where the
			-- value at index i is true if and only if
			-- i is prime.
		ensure
			instance_free: class

	is_prime (n: INTEGER_32): BOOLEAN
			-- Is n a prime number?
		ensure then
			instance_free: class

	i_th (i: INTEGER_32): INTEGER_32
			-- The i-th prime number
		ensure then
			instance_free: class
	
feature -- Iteration

	new_cursor: PRIMES
			-- Fresh cursor associated with current structure
		ensure then
			instance_free: class
	
note
	copyright: "Copyright (c) 1984-2018, Eiffel Software and others"
	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
	source: "[
		Eiffel Software
		5949 Hollister Ave., Goleta, CA 93117 USA
		Telephone 805-685-1006, Fax 805-685-6869
		Website http://www.eiffel.com
		Customer support http://support.eiffel.com
	]"

end -- class PRIMES

Generated by ISE EiffelStudio