mirror of git://sourceware.org/git/glibc.git
58 lines
2.0 KiB
C
58 lines
2.0 KiB
C
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/* Test that rand () evaluates to a special expected sequence.
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Copyright (C) 2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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/* This test is borderline invalid because the rand function is not
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guaranteed to produce the same sequence of numbers on every
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architecture or glibc build. However, some software packages have
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test suites that depend on the specific sequence of numbers return
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here, so this test verifies that they do not change unexpectedly. */
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#include <stdlib.h>
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#include <support/check.h>
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static int
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do_test (void)
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{
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TEST_COMPARE (rand (), 1804289383);
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TEST_COMPARE (rand (), 846930886);
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TEST_COMPARE (rand (), 1681692777);
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TEST_COMPARE (rand (), 1714636915);
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TEST_COMPARE (rand (), 1957747793);
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TEST_COMPARE (rand (), 424238335);
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TEST_COMPARE (rand (), 719885386);
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TEST_COMPARE (rand (), 1649760492);
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TEST_COMPARE (rand (), 596516649);
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TEST_COMPARE (rand (), 1189641421);
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srand (1009);
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TEST_COMPARE (rand (), 176208083);
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TEST_COMPARE (rand (), 1650100842);
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TEST_COMPARE (rand (), 1813188575);
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TEST_COMPARE (rand (), 2064804480);
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TEST_COMPARE (rand (), 1944264725);
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TEST_COMPARE (rand (), 1673642853);
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TEST_COMPARE (rand (), 1582759448);
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TEST_COMPARE (rand (), 309901569);
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TEST_COMPARE (rand (), 444031692);
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TEST_COMPARE (rand (), 1926035991);
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return 0;
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}
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#include <support/test-driver.c>
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