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  2. Exponentiation by squaring - Wikipedia

    en.wikipedia.org/wiki/Exponentiation_by_squaring

    Yao's method collects in u first those x i that appear to the highest power ⁠ ⁠; in the next round those with power ⁠ ⁠ are collected in u as well etc. The variable y is multiplied ⁠ h − 1 {\displaystyle h-1} ⁠ times with the initial u , ⁠ h − 2 {\displaystyle h-2} ⁠ times with the next highest powers, and so on.

  3. Kent Recursive Calculator - Wikipedia

    en.wikipedia.org/wiki/Kent_Recursive_Calculator

    KRC (Kent Recursive Calculator) is a lazy functional language developed by David Turner from November 1979 to October 1981 [1] based on SASL, with pattern matching, guards and ZF expressions [2] (now more usually called list comprehensions).

  4. Recursion (computer science) - Wikipedia

    en.wikipedia.org/wiki/Recursion_(computer_science)

    The recursive program above is tail-recursive; it is equivalent to an iterative algorithm, and the computation shown above shows the steps of evaluation that would be performed by a language that eliminates tail calls. Below is a version of the same algorithm using explicit iteration, suitable for a language that does not eliminate tail calls.

  5. Kent Recursive Calculator - en.wikipedia.org

    en.wikipedia.org/.../Kent_Recursive_Calculator

    Kent Recursive Calculator Add article description KRC ( Kent Recursive Calculator ) is a lazy functional language developed by David Turner from November 1979 to October 1981 [1] based on SASL , with pattern matching , guards and ZF expressions [2] (now more usually called list comprehensions ).

  6. Ackermann function - Wikipedia

    en.wikipedia.org/wiki/Ackermann_function

    All primitive recursive functions are total and computable, but the Ackermann function illustrates that not all total computable functions are primitive recursive. After Ackermann's publication [ 2 ] of his function (which had three non-negative integer arguments), many authors modified it to suit various purposes, so that today "the Ackermann ...

  7. Primitive recursive function - Wikipedia

    en.wikipedia.org/wiki/Primitive_recursive_function

    A total recursive function is a partial recursive function that is defined for every input. Every primitive recursive function is total recursive, but not all total recursive functions are primitive recursive. The Ackermann function A(m,n) is a well-known example of a total recursive function (in fact, provable total), that is not primitive ...

  8. Modular exponentiation - Wikipedia

    en.wikipedia.org/wiki/Modular_exponentiation

    Modular exponentiation is the remainder when an integer b (the base) is raised to the power e (the exponent), and divided by a positive integer m (the modulus); that is, c = b e mod m. From the definition of division, it follows that 0 ≤ c < m .

  9. Karatsuba algorithm - Wikipedia

    en.wikipedia.org/wiki/Karatsuba_algorithm

    Karatsuba multiplication of az+b and cz+d (boxed), and 1234 and 567 with z=100. Magenta arrows denote multiplication, amber denotes addition, silver denotes subtraction and cyan denotes left shift. (A), (B) and (C) show recursion with z=10 to obtain intermediate values. The Karatsuba algorithm is a fast multiplication algorithm.