test-suite/tests/random.test

   1 ;;;; random.test --- tests guile's uniform arrays     -*- scheme -*-
   2 ;;;;
   3 ;;;; Copyright 2013 Free Software Foundation, Inc.
   4 ;;;;
   5 ;;;; This library is free software; you can redistribute it and/or
   6 ;;;; modify it under the terms of the GNU Lesser General Public
   7 ;;;; License as published by the Free Software Foundation; either
   8 ;;;; version 3 of the License, or (at your option) any later version.
   9 ;;;;
  10 ;;;; This library is distributed in the hope that it will be useful,
  11 ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 ;;;; Lesser General Public License for more details.
  14 ;;;;
  15 ;;;; You should have received a copy of the GNU Lesser General Public
  16 ;;;; License along with this library; if not, write to the Free Software
  17 ;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  18
  19 (define-module (test-suite test-random)
  20   #:use-module ((system base compile) #:select (compile))
  21   #:use-module (test-suite lib)
  22   #:use-module (srfi srfi-4)
  23   #:use-module (srfi srfi-4 gnu))
  24
  25 ; see strings.test, arrays.test.
  26 (define exception:wrong-type-arg
  27   (cons #t "Wrong type"))
  28
  29 ;;;
  30 ;;; random:normal-vector!
  31 ;;;
  32
  33 (with-test-prefix "random:normal-vector!"
  34
  35   ;; FIXME need proper function test.
  36
  37   (pass-if "non uniform"
  38     (let ((a (make-vector 4 0))
  39           (b (make-vector 4 0))
  40           (c (make-shared-array (make-vector 8 0)
  41                                 (lambda (i) (list (+ 1 (* 2 i)))) 4)))
  42       (begin
  43         (random:normal-vector! b (random-state-from-platform))
  44         (random:normal-vector! c (random-state-from-platform))
  45         (and (not (equal? a b)) (not (equal? a c))))))
  46
  47   (pass-if "uniform (f64)"
  48     (let ((a (make-f64vector 4 0))
  49           (b (make-f64vector 4 0))
  50           (c (make-shared-array (make-f64vector 8 0)
  51                                 (lambda (i) (list (+ 1 (* 2 i)))) 4)))
  52       (begin
  53         (random:normal-vector! b (random-state-from-platform))
  54         (random:normal-vector! c (random-state-from-platform))
  55         (and (not (equal? a b)) (not (equal? a c)))))))