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| author | Havard Skinnemoen <hskinnemoen@google.com> | 2020-11-02 17:14:55 -0800 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2020-11-10 11:03:48 +0000 |
| commit | 8006c9842bf6f52fdcfb1c8f64c9bd714e661301 (patch) | |
| tree | 4f4a322bf4aaca345860b4b02af5d6fd0bbc1321 /tests/qtest | |
| parent | 0e5dc775736fda574e0df9c4c9a29c92201833fe (diff) | |
tests/qtest/npcm7xx_rng-test: count runs properly
The number of runs is equal to the number of 0-1 and 1-0 transitions,
plus one. Currently, it's counting the number of times these transitions
do _not_ happen, plus one.
Source:
https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-22r1a.pdf
section 2.3.4 point (3).
Signed-off-by: Havard Skinnemoen <hskinnemoen@google.com>
Message-id: 20201103011457.2959989-2-hskinnemoen@google.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'tests/qtest')
| -rw-r--r-- | tests/qtest/npcm7xx_rng-test.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tests/qtest/npcm7xx_rng-test.c b/tests/qtest/npcm7xx_rng-test.c index e7cde85fbb..c614968ffc 100644 --- a/tests/qtest/npcm7xx_rng-test.c +++ b/tests/qtest/npcm7xx_rng-test.c @@ -126,7 +126,7 @@ static double calc_runs_p(const unsigned long *buf, unsigned int nr_bits) pi = (double)nr_ones / nr_bits; for (k = 0; k < nr_bits - 1; k++) { - vn_obs += !(test_bit(k, buf) ^ test_bit(k + 1, buf)); + vn_obs += (test_bit(k, buf) ^ test_bit(k + 1, buf)); } vn_obs += 1; |