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volume-test: Allow rounding without having to allow a random number of errors

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This commit is contained in:
Joseph Herlant 2018-10-11 11:46:54 -07:00 • committed by Arun Raghavan
parent b176c84a85
commit 5f727f0faf
1 changed files with 20 additions and 17 deletions
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37
src/tests/volume-test.c
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@ -111,6 +111,7 @@ START_TEST (volume_test) {
double t = pa_sw_volume_to_linear(w);
double db2 = pa_sw_volume_to_dB(w);
pa_volume_t p, p1, p2;
pa_volume_t md_local = 0;
double q, qq;
p = pa_sw_volume_multiply(v, w);
@ -122,30 +123,32 @@ START_TEST (volume_test) {
q = l*t;
p1 = pa_sw_volume_from_linear(q);
if (p2 > p && p2 - p > md)
md = p2 - p;
if (p2 < p && p - p2 > md)
md = p - p2;
if (p1 > p && p1 - p > md)
md = p1 - p;
if (p1 < p && p - p1 > md)
md = p - p1;
if (p2 > p)
md_local = p2 - p;
else
md_local = p - p2;
if (p1 != p || p2 != p)
if (p1 > p && p1 - p > md_local)
md_local = p1 - p;
if (p1 < p && p - p1 > md_local)
md_local = p - p1;
/* compute the number of times the deviation is over the acceptable threshold */
if (md_local > 1)
mdn++;
if (md_local > md)
md = md_local;
}
}
pa_log("max deviation: %lu n=%lu", (unsigned long) md, (unsigned long) mdn);
/*
* As the hardware, the compiler version and the compilation flags may
* generate rounding issues, we allow p1 and p2 to have a difference of + or - 1.
*/
pa_log("max deviation: %lu, number of times over 1:%lu", (unsigned long) md, (unsigned long) mdn);
fail_unless(md <= 1);
/* mdn counts the times there were rounding errors during the test. The
* number of rounding errors seems to vary slightly depending on the
* hardware. The original limit was 251 errors, but it was increased to 253
* when the test was failing on Tanu's laptop.
* See https://bugs.freedesktop.org/show_bug.cgi?id=72374 */
fail_unless(mdn <= 253);
}
END_TEST