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e78d4bf9a9
* libguile/vm-i-scheme.c (INUM_MAX, INUM_MIN): New macros.
(add1, sub1): Add/subtract without untagging the operand. This leads
to a 44% run time improvement compared to the previous
implementation.
* libguile/vm.c: Include <stdint.h>.
* test-suite/tests/numbers.test ("1+", "1-"): Add tests for
MOST-POSITIVE-FIXNUM, resp. MOST-NEGATIVE-FIXNUM, for 32-bit and
34-bit values thereof.
* benchmark-suite/benchmarks/arithmetic.bm: New file.
* benchmark-suite/Makefile.am (SCM_BENCHMARKS): Add it.
46 lines
1.5 KiB
Scheme
46 lines
1.5 KiB
Scheme
;;; -*- mode: scheme; coding: utf-8; -*-
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;;; Integer arithmetic.
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;;;
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;;; Copyright 2010 Free Software Foundation, Inc.
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;;;
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;;; This program is free software; you can redistribute it and/or
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;;; modify it under the terms of the GNU Lesser General Public License
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;;; as published by the Free Software Foundation; either version 3, or
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;;; (at your option) any later version.
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;;;
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;;; This program is distributed in the hope that it will be useful,
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;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU Lesser General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU Lesser General Public
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;;; License along with this software; see the file COPYING.LESSER. If
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;;; not, write to the Free Software Foundation, Inc., 51 Franklin
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;;; Street, Fifth Floor, Boston, MA 02110-1301 USA
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(define-module (benchmarks arithmetic)
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#:use-module (benchmark-suite lib))
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(define-syntax repeat
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(lambda (s)
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;; Construct an expression of the form `(OP (OP (OP BODY)))', with a
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;; depth of COUNT.
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(syntax-case s ()
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((_ op body count)
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(number? (syntax->datum #'count))
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(let loop ((count (syntax->datum #'count))
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(result #'body))
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(if (= 0 count)
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result
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(loop (1- count)
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(with-syntax ((result result))
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#'(op result)))))))))
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(with-benchmark-prefix "fixnum"
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(benchmark "1+" 1e7
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(repeat 1+ 2 100))
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(benchmark "1-" 1e7
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(repeat 1- 2 100)))
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