| 1768 | |
| 1769 | template <typename T> |
| 1770 | AccuracyResult measure_acos_t() { |
| 1771 | AccuracyResult r = {}; |
| 1772 | const int N = 10; // Spot testing: 10 key points adequate for [-1, 1] range (was 50) |
| 1773 | const float lo = -1.0f; |
| 1774 | const float hi = 1.0f; |
| 1775 | float sumErr = 0; |
| 1776 | for (int i = 0; i < N; ++i) { |
| 1777 | float x = lo + (hi - lo) * i / (N - 1); |
| 1778 | float ref = fl::acosf(x); |
| 1779 | float got = T::acos(T(x)).to_float(); |
| 1780 | float err = fl::fabsf(got - ref); |
| 1781 | sumErr += err; |
| 1782 | if (err > r.maxErr) { r.maxErr = err; r.worstInput = x; } |
| 1783 | } |
| 1784 | r.avgErr = sumErr / N; |
| 1785 | r.nSamples = N; |
| 1786 | return r; |
| 1787 | } |
| 1788 | |
| 1789 | template <typename T> |
| 1790 | AccuracyResult measure_sqrt_t() { |