Theory Code_Timing

(*  Title: HOL/ex/Code_Timing.thy
    Author: Florian Haftmann, TU Muenchen, 2016
*)

section ‹Examples for code generation timing measures›

theory Code_Timing
imports "HOL-Number_Theory.Eratosthenes"
begin

declare [[code_timing]]

definition primes_upto :: "nat ⇒ int list"
where
  "primes_upto = map int ∘ Eratosthenes.primes_upto"

definition "required_symbols _ = (primes_upto, 0 :: nat, Suc, 1 :: nat,
  numeral :: num ⇒ nat, Num.One, Num.Bit0, Num.Bit1,
  Code_Evaluation.TERM_OF_EQUAL :: int list itself)"

ML ‹
local
  val ctxt = \<^context>;
  val consts = [\<^const_name>‹required_symbols›];
in
  val simp = Code_Simp.static_conv
    { ctxt = ctxt, consts = consts, simpset = NONE };
  val nbe = Nbe.static_conv
    { ctxt = ctxt, consts = consts };
end;
›

ML_val ‹
  simp \<^context> \<^cterm>‹primes_upto 100›
›

ML_val ‹
  simp \<^context> \<^cterm>‹primes_upto 200›
›

ML_val ‹
  nbe \<^context> \<^cterm>‹primes_upto 200›
›

ML_val ‹
  nbe \<^context> \<^cterm>‹primes_upto 400›
›

ML_val ‹
  nbe \<^context> \<^cterm>‹primes_upto 600›
›

end