On 12/17/2023 6:13 AM, Rémi Denis-Courmont wrote:
--- tests/checkasm/lpc.c | 47 ++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 45 insertions(+), 2 deletions(-)diff --git a/tests/checkasm/lpc.c b/tests/checkasm/lpc.c index 592e34c03d..9b33f8a3b0 100644 --- a/tests/checkasm/lpc.c +++ b/tests/checkasm/lpc.c @@ -57,10 +57,46 @@ static void test_window(int len) bench_new(src, len, dst1); }+static void test_compute_autocorr(ptrdiff_t len, int lag)+{ + LOCAL_ALIGNED(32, double, src, [5000 + 2 + MAX_LPC_ORDER]); + LOCAL_ALIGNED(16, double, dst0, [MAX_LPC_ORDER + 1]); + LOCAL_ALIGNED(16, double, dst1, [MAX_LPC_ORDER + 1]); + + declare_func(void, const double *in, ptrdiff_t len, int lag, double *out); + + av_assert0(lag >= 0 && lag <= MAX_LPC_ORDER); + + for (int i = 0; i < MAX_LPC_ORDER; i++) + src[i] = 0.; + + src += MAX_LPC_ORDER; + + for (ptrdiff_t i = 0; i < len; i++) { + src[i] = (double)rnd() / (double)UINT_MAX; + } + + call_ref(src, len, lag, dst0); + call_new(src, len, lag, dst1); + + for (size_t i = 0; i < lag; i++) { + if (!double_near_abs_eps(dst0[i], dst1[i], EPS)) {
checkasm: using random seed 2504816888 SSE2: - lpc.apply_welch_window_even [OK] - lpc.apply_welch_window_odd [OK] 0: 770.224646270451 - 770.382378714191 = -0.15773244374 autocorr_10_sse2 (lpc.c:86) - lpc.compute_autocorr_10 [FAILED] 0: 807.574416481743 - 807.732148925482 = -0.157732443739 autocorr_30_sse2 (lpc.c:86) - lpc.compute_autocorr_30 [FAILED] 0: 787.329053288888 - 787.486785732628 = -0.15773244374 autocorr_32_sse2 (lpc.c:86) - lpc.compute_autocorr_32 [FAILED] checkasm: using random seed 827008587 SSE2: - lpc.apply_welch_window_even [OK] - lpc.apply_welch_window_odd [OK] - lpc.compute_autocorr_10 [OK] - lpc.compute_autocorr_30 [OK] - lpc.compute_autocorr_32 [OK] Some seeds work, others don't. So i guess EPS is too small.
+ fprintf(stderr, "%zu: %- .12f - %- .12f = % .12g\n", + i, dst0[i], dst1[i], dst0[i] - dst1[i]); + fail(); + break; + } + } + + bench_new(src, len, lag, dst1); +} + void checkasm_check_lpc(void) { LPCContext ctx; - int len = rnd() % 5000; + int len = 2000 + (rnd() % 3000); + static const int lags[] = { 10, 30, 32 }; + ff_lpc_init(&ctx, 32, 16, FF_LPC_TYPE_DEFAULT);if (check_func(ctx.lpc_apply_welch_window, "apply_welch_window_even")) {@@ -72,6 +108,13 @@ void checkasm_check_lpc(void) test_window(len | 1); } report("apply_welch_window_odd"); - ff_lpc_end(&ctx); + + for (size_t i = 0; i < FF_ARRAY_ELEMS(lags); i++) { + ff_lpc_init(&ctx, len, lags[i], FF_LPC_TYPE_DEFAULT); + if (check_func(ctx.lpc_compute_autocorr, "autocorr_%d", lags[i])) + test_compute_autocorr(len, lags[i]); + report("compute_autocorr_%d", lags[i]); + ff_lpc_end(&ctx); + } }
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