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eina_test_fp: Test multiplication and division as well 

Signed-off-by: Daniel Willmann <d.willmann@samsung.com>
This commit is contained in:
Daniel Willmann 2013-05-17 16:46:23 +01:00
parent 6667acf5a2
commit 7c20a90c3d
1 changed files with 98 additions and 0 deletions
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98
src/tests/eina/eina_test_fp.c
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@ -85,9 +85,107 @@ START_TEST(eina_fp_sin)
}
END_TEST
START_TEST(eina_fp_mul)
{
Eina_F32p32 fc1, fc2;
Eina_F32p32 fresult;
double dc1, dc2;
double dl1, dl2;
double step1, step2;
double dresult;
double delta, delta_per;
double maxdelta = 0;
double maxdelta_per = 0;
fail_if(!eina_init());
dl1 = 10;
step1 = 0.001;
dl2 = 1000;
step2 = 0.01;
for (dc1 = 0; dc1 < dl1; dc1 += step1)
{
for (dc2 = 0; dc2 < dl2; dc2 += step2)
{
dresult = dc1 * dc2;
fc1 = eina_f32p32_double_from(dc1);
fc2 = eina_f32p32_double_from(dc2);
fresult = eina_f32p32_mul(fc1, fc2);
delta = fabs(dresult - eina_f32p32_double_to(fresult));
delta_per = delta/dresult;
if (delta > 0.008 || delta_per > 0.01)
{
printf("%f*%f = %f (delta: %f, %f%%)\n", dc1, dc2, dresult, delta, delta_per*100);
fail_if(delta > 0.005 || delta_per > 0.01);
}
if (delta > maxdelta)
maxdelta = delta;
if (delta_per > maxdelta_per)
maxdelta_per = delta_per;
}
}
printf("Max delta(multiplication): %f (%f%%)\n", maxdelta, maxdelta_per*100);
eina_shutdown();
}
END_TEST
START_TEST(eina_fp_div)
{
Eina_F32p32 fc1, fc2;
Eina_F32p32 fresult;
double dc1, dc2;
double dl1, dl2;
double step1, step2;
double dresult;
double delta, delta_per;
double maxdelta = 0;
double maxdelta_per = 0;
fail_if(!eina_init());
dl1 = 10;
step1 = 0.001;
dl2 = 1000;
step2 = 0.01;
for (dc1 = 0; dc1 < dl1; dc1 += step1)
{
for (dc2 = step2; dc2 < dl2; dc2 += step2)
{
dresult = dc1 / dc2;
fc1 = eina_f32p32_double_from(dc1);
fc2 = eina_f32p32_double_from(dc2);
fresult = eina_f32p32_div(fc1, fc2);
delta = fabs(dresult - eina_f32p32_double_to(fresult));
delta_per = delta/dresult;
if (delta > 0.005 || delta_per > 0.03)
{
printf("%f/%f = %f (delta %f, %f%%)\n", dc1, dc2, dresult, delta, delta_per*100);
fail_if(delta > 0.005 || delta_per > 0.03);
}
if (delta > maxdelta)
maxdelta = delta;
if (delta_per > maxdelta_per)
maxdelta_per = delta_per;
}
}
printf("Max delta(division): %f (%f%%)\n", maxdelta, maxdelta_per*100);
eina_shutdown();
}
END_TEST
void
eina_test_fp(TCase *tc)
{
tcase_add_test(tc, eina_fp_cos);
tcase_add_test(tc, eina_fp_sin);
tcase_add_test(tc, eina_fp_mul);
tcase_add_test(tc, eina_fp_div);
}