From 28f540f45bbacd939bfd07f213bcad2bf730b1bf Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sat, 18 Feb 1995 01:27:10 +0000 Subject: initial import --- stdlib/testrand.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 stdlib/testrand.c (limited to 'stdlib/testrand.c') diff --git a/stdlib/testrand.c b/stdlib/testrand.c new file mode 100644 index 0000000000..b66dca9899 --- /dev/null +++ b/stdlib/testrand.c @@ -0,0 +1,51 @@ +/* Copyright (C) 1992 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include +#include +#include + +int +DEFUN_VOID(main) +{ + int i1, i2; + int j1, j2; + + /* The C standard says that "If rand is called before any calls to + srand have been made, the same sequence shall be generated as + when srand is first called with a seed value of 1." */ + i1 = rand(); + i2 = rand(); + srand (1); + j1 = rand(); + j2 = rand(); + if (j1 == i1 && j2 == i2) + { + puts ("Test succeeded."); + return 0; + } + else + { + if (j1 != i1) + printf ("%d != %d\n", j1, i1); + if (j2 != i2) + printf ("%d != %d\n", j2, i2); + puts ("Test FAILED!"); + return 1; + } +} -- cgit v1.2.3