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[util] Clean up some ULP errors in tests 

The problem with floating point in unit tests is, well, comparisons are
finicky.
This commit is contained in:
Bill Currie 2023-03-25 17:35:14 +09:00 committed by Bill Currie
parent f18837f195
commit f098bbf48b
2 changed files with 30 additions and 12 deletions
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2
libs/util/test/test-quat.c
View File

@ -352,7 +352,7 @@ static struct {
{0, 0, 1,
1, 0, 0,
0, 1, 0}},
#if defined(__i686__) && defined(__OPTIMIZE__)
#if (defined(__i686__) || defined(__aarch64__)) && defined(__OPTIMIZE__)
// the fp unit carries more precision than a 32-bit float, so
// the close-to-zero errors are different
{{s05, 0.0, 0.0, s05},

40
libs/util/test/test-simd.c
View File

@ -191,7 +191,11 @@ static vec4d_test_t vec4d_tests[] = {
T(crossd, one, up, { 1, -1, 0} ),
// This one fails when optimizing with -mfma (which is why fma is not
// used): ulp errors in z and w
T(crossd, qtest, qtest, {0, 0, 0, 0} ),
T(crossd, qtest, qtest, {0, 0, 0, 0},
#if defined(__aarch64__)
{0, 0, -2.1938006966593093e-17, 1.3322676295501878e-17},
#endif
),
T(qmuld, qident, qident, qident ),
T(qmuld, qident, right, right ),
@ -213,7 +217,11 @@ static vec4d_test_t vec4d_tests[] = {
T(qmuld, one, { 2, 2, 2, -2 }, { 0, 0, 0, -8 } ),
// This one fails when optimizing with -mfma (which is why fma is not
// used): ulp error in z
T(qmuld, qtest, qtest, {0.768, 0.576, 0, -0.28} ),
T(qmuld, qtest, qtest, {0.768, 0.576, 0, -0.28},
#if defined(__aarch64__)
{0, 0, -2.1938006966593093e-17, 0},
#endif
),
// The one vector is not unit (magnitude 2), so using it as a rotation
// quaternion results in scaling by 4. However, it still has the effect
@ -316,12 +324,16 @@ static vec4f_test_t vec4f_tests[] = {
T(crossf, one, right, { 0, 1, -1} ),
T(crossf, one, forward, {-1, 0, 1} ),
T(crossf, one, up, { 1, -1, 0} ),
#ifdef __aarch64__
T(crossf, qtest, qtest, {0, 0, -1.47819534e-09, -1.43051153e-08} ),
#else
#if !defined(__SSE__) && !defined(__OPTIMIZE__)
// when not optimizing and SSE is not available (but ok when
// optimizing)
T(crossf, qtest, qtest, {0, 0, -1.47819534e-09, 0} ),
#else
T(crossf, qtest, qtest, {0, 0, 0, 0} ),
#endif
#endif
T(qmulf, qident, qident, qident ),
@ -343,14 +355,18 @@ static vec4f_test_t vec4f_tests[] = {
T(qmulf, one, one, { 2, 2, 2, -2 } ),
T(qmulf, one, { 2, 2, 2, -2 }, { 0, 0, 0, -8 } ),
T(qmulf, qtest, qtest, {0.768, 0.576, 0, -0.28},
#ifdef __aarch64__
{0, 6e-8, -1.47819534e-09, 2.98023224e-08}
#else
#if !defined(__SSE__) && !defined(__OPTIMIZE__)
// when not optimizing and SSE is not available (but ok when
// optimizing)
{0, 6e-8, -1.47819534e-09, 3e-8}
#elif !defined( __SSE__)
#elif !defined(__SSE__)
{0, 6e-8, 0, 6e-8}
#else
{0, 6e-8, 0, 3e-8}
#endif
#endif
),
@ -373,18 +389,18 @@ static vec4f_test_t vec4f_tests[] = {
T(qvmulf, qtest, right, {0.5392, 0.6144, -0.576, 0},
{0, -5.9e-8, -6e-8, 0} ),
T(qvmulf, qtest, forward, {0.6144, 0.1808, 0.768, 0},
#if !defined(__SSE__) && !defined(__OPTIMIZE__)
#if !(defined(__SSE__) || defined(__aarch64__)) && !defined(__OPTIMIZE__)
{-5.9e-8, 0, 0, 0}
#elif !defined(__SSE__)
#elif !(defined(__SSE__) || defined(__aarch64__))
{-5.9e-8, 3e-8, 0, 0}
#else
{-5.9e-8, 1.5e-8, 0, 0}
#endif
),
T(qvmulf, qtest, up, {0.576, -0.768, -0.28, 0},
#if !defined(__SSE__) && !defined(__OPTIMIZE__)
#if !(defined(__SSE__) || defined(__aarch64__)) && !defined(__OPTIMIZE__)
{6e-8, 0, 3e-8, 0}
#elif !defined(__SSE__)
#elif !(defined(__SSE__) || defined(__aarch64__))
{6e-8, 0, 6e-8, 0}
#else
{6e-8, 0, 3e-8, 0}
@ -393,18 +409,18 @@ static vec4f_test_t vec4f_tests[] = {
T(vqmulf, right, qtest, {0.5392, 0.6144, 0.576, 0},
{0, -5.9e-8, 5.9e-8, 0} ),
T(vqmulf, forward, qtest, {0.6144, 0.1808, -0.768, 0},
#if !defined(__SSE__) && !defined(__OPTIMIZE__)
#if !(defined(__SSE__) || defined(__aarch64__)) && !defined(__OPTIMIZE__)
{-5.9e-8, 0, 0, 0}
#elif !defined(__SSE__)
#elif !(defined(__SSE__) || defined(__aarch64__))
{-5.9e-8, 3e-8, 0, 0}
#else
{-5.9e-8, 1.5e-8, 0, 0}
#endif
),
T(vqmulf, up, qtest, {-0.576, 0.768, -0.28, 0},
#if !defined(__SSE__) && !defined(__OPTIMIZE__)
#if !(defined(__SSE__) || defined(__aarch64__)) && !defined(__OPTIMIZE__)
{-5.9e-8, 0, 3e-8, 0}
#elif !defined(__SSE__)
#elif !(defined(__SSE__) || defined(__aarch64__))
{-5.9e-8, 0, 6e-8, 0}
#else
{-5.9e-8, 0, 3e-8, 0}
@ -501,6 +517,7 @@ run_vec4d_tests (void)
printf ("E: " VEC4D_FMT "\n", VEC4_EXP(expect));
printf ("e: " VEC4D_FMT "\n", VEC4_EXP(test->expect));
printf ("u: " VEC4D_FMT "\n", VEC4_EXP(test->ulp_errors));
printf ("U: " VEC4D_FMT "\n", VEC4_EXP(result - test->expect));
}
}
return ret;
@ -526,6 +543,7 @@ run_vec4f_tests (void)
printf ("E: " VEC4F_FMT "\n", VEC4_EXP(expect));
printf ("e: " VEC4F_FMT "\n", VEC4_EXP(test->expect));
printf ("u: " VEC4F_FMT "\n", VEC4_EXP(test->ulp_errors));
printf ("U: " VEC4F_FMT "\n", VEC4_EXP(result - test->expect));
}
}
return ret;