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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/tools/testing/selftests/timers/freq-step.c
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * This test checks the response of the system clock to frequency
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  * steps made with adjtimex(). The frequency error and stability of
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  * values from the second interval exceed specified limits.
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  *
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  * Copyright (C) Miroslav Lichvar <mlichvar@redhat.com>  2017
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of version 2 of the GNU General Public License as
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- * published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful, but
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- * 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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- * General Public License for more details.
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  */
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 #include <math.h>
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 #define SAMPLE_READINGS 10
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 #define MEAN_SAMPLE_INTERVAL 0.1
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 #define STEP_INTERVAL 1.0
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-#define MAX_PRECISION 100e-9
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-#define MAX_FREQ_ERROR 10e-6
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-#define MAX_STDDEV 1000e-9
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+#define MAX_PRECISION 500e-9
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+#define MAX_FREQ_ERROR 0.02e-6
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+#define MAX_STDDEV 50e-9
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 #ifndef ADJ_SETOFFSET
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   #define ADJ_SETOFFSET 0x0100