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checkasm: ac3dsp: Increase the float tolerance for sum_square_butterfly_float

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Accept up to 13 ULP difference.

This fixes running "checkasm --test=ac3dsp 3044836819" on ARM.

Depending on how the SIMD implementations aggregate numbers,
larger/smaller values might not end up accumulated in exactly
the same way; the current NEON implementation for ARM aggregates
into vectors of 2 elements. If it would aggregate into vectors
of 4 elements instead, like the AArch64 version does, this particular
case would end up with a smaller difference.
This commit is contained in:
Martin Storsjö
2025-08-08 13:59:33 +03:00
committed by Kacper Michajłow
parent 0400e05a1a
commit 8e4c904c8e
1 changed files with 1 additions and 1 deletions
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2
tests/checkasm/ac3dsp.c
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@@ -181,7 +181,7 @@ static void check_ac3_sum_square_butterfly_float(AC3DSPContext *c) {
call_ref(v1, lt, rt, ELEMS);
call_new(v2, lt, rt, ELEMS);
if (!float_near_ulp_array(v1, v2, 11, 4))
if (!float_near_ulp_array(v1, v2, 13, 4))
fail();
bench_new(v2, lt, rt, ELEMS);