13 static bool eq(const SkM44& a, const SkM44& b, float tol) {  in eq()
26     SkM44 m, im;  in DEF_TEST()
28     REPORTER_ASSERT(reporter, SkM44(1, 0, 0, 0,  in DEF_TEST()
32     REPORTER_ASSERT(reporter, SkM44() == m);  in DEF_TEST()
34     REPORTER_ASSERT(reporter, SkM44() == im);  in DEF_TEST()
37     REPORTER_ASSERT(reporter, SkM44(1, 0, 0, 3,  in DEF_TEST()
43     m = SkM44::ColMajor(f);  in DEF_TEST()
44     REPORTER_ASSERT(reporter, SkM44(f[0], f[4], f[ 8], f[12],  in DEF_TEST()
50         SkM44 t = m.transpose();  in DEF_TEST()
53         SkM44 tt = t.transpose();  in DEF_TEST()
57     m = SkM44::RowMajor(f);  in DEF_TEST()
58     REPORTER_ASSERT(reporter, SkM44(f[ 0], f[ 1], f[ 2], f[ 3],  in DEF_TEST()
67     REPORTER_ASSERT(reporter, eq(SkM44(), m, 0.0000005f));  in DEF_TEST()
68     REPORTER_ASSERT(reporter, SkM44() != m);  in DEF_TEST()
82     SkM44 m = {  in DEF_TEST()
96     SkM44 m( 1,  2,  3,  4,  in DEF_TEST()
111     REPORTER_ASSERT(reporter, SkM44::Rows(r0, r1, r2, r3) == m);  in DEF_TEST()
123     REPORTER_ASSERT(reporter, SkM44::Cols(c0, c1, c2, c3) == m);  in DEF_TEST()
170         SkM44 m(SkM44::kNaN_Constructor);  in DEF_TEST()
203     auto map2d = [&](const SkM44& m, SkV2 p) {  in DEF_TEST()
234         SkM44 m = SkM44::RectToRect(src, dst);  in DEF_TEST()
266     auto assertMapRect = [&](const SkM44& m, const SkRect& src, const SkRect* expected) {  in DEF_TEST()
339     assertMapRect(SkM44(), src, &src);  in DEF_TEST()
343     assertMapRect(SkM44::Scale(2.f, 4.f).postTranslate(10.f, 8.f), src, &st);  in DEF_TEST()
345     assertMapRect(SkM44::Rotate({0.f, 0.f, 1.f}, SK_ScalarPI / 4.f)  in DEF_TEST()
351     SkM44 p = SkM44::Perspective(0.01f, 10.f, SK_ScalarPI / 3.f);  in DEF_TEST()
353     p.preConcat(SkM44::Rotate({0.f, 1.f, 0.f}, 0.008f /* radians */));  in DEF_TEST()
369     SkM44 m(SkMatrix::MakeAll( 0.000152695269f, 0.00000000f,     -6.53848401e-05f,  in DEF_TEST()