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;;; -*- mode: scheme; coding: utf-8; -*-
;;; Integer arithmetic.
;;;
;;; Copyright 2010, 2012 Free Software Foundation, Inc.
;;;
;;; This program is free software; you can redistribute it and/or
;;; modify it under the terms of the GNU Lesser General Public License
;;; as published by the Free Software Foundation; either version 3, or
;;; (at your option) any later version.
;;;
;;; This program is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU Lesser General Public License for more details.
;;;
;;; You should have received a copy of the GNU Lesser General Public
;;; License along with this software; see the file COPYING.LESSER. If
;;; not, write to the Free Software Foundation, Inc., 51 Franklin
;;; Street, Fifth Floor, Boston, MA 02110-1301 USA
(define-module (benchmarks arithmetic)
#:use-module (benchmark-suite lib))
(define-syntax repeat
(lambda (s)
;; Construct an expression of the form `(OP (OP (OP SEED)))', with a
;; depth of COUNT.
(syntax-case s (<>)
((_ (op x <>) seed count) ;; binary OP
(number? (syntax->datum #'count))
(let loop ((count (syntax->datum #'count))
(result #'seed))
(if (= 0 count)
result
(loop (1- count)
(with-syntax ((result result))
#'(op x result))))))
((_ (op <>) seed count) ;; unary OP
(number? (syntax->datum #'count))
(let loop ((count (syntax->datum #'count))
(result #'seed))
(if (= 0 count)
result
(loop (1- count)
(with-syntax ((result result))
#'(op result)))))))))
(with-benchmark-prefix "fixnum"
(benchmark "1+" #e1e7
(repeat (1+ <>) 2 100))
(benchmark "1-" #e1e7
(repeat (1- <>) 2 100))
(benchmark "+" #e1e7
(repeat (+ 2 <>) 7 100))
(benchmark "-" #e1e7
(repeat (- 2 <>) 7 100))
(benchmark "*" #e1e7
(repeat (* 1 <>) 1 100))
(benchmark "/" #e1e7
(repeat (/ 2 <>) 1 100)))
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