Refactor Sk2x<T> + Sk4x<T> into SkNf<N,T> and SkNi<N,T>

tests/Sk4xTest.cpp

-#include "Test.h"
-#include "Sk4x.h"
-
-#define ASSERT_EQ(a, b) REPORTER_ASSERT(r, a.equal(b).allTrue())
-#define ASSERT_NE(a, b) REPORTER_ASSERT(r, a.notEqual(b).allTrue())
-
-DEF_TEST(Sk4x_Construction, r) {
-    Sk4f uninitialized;
-    Sk4f zero(0,0,0,0);
-    Sk4f foo(1,2,3,4),
-         bar(foo),
-         baz = bar;
-    ASSERT_EQ(foo, bar);
-    ASSERT_EQ(bar, baz);
-    ASSERT_EQ(baz, foo);
-}
-
-struct AlignedFloats {
-    Sk4f forces16ByteAlignment;   // On 64-bit machines, the stack starts 128-bit aligned,
-    float fs[5];                  // but not necessarily so on 32-bit.  Adding an Sk4f forces it.
-};
-
-DEF_TEST(Sk4x_LoadStore, r) {
-    AlignedFloats aligned;
-    // fs will be 16-byte aligned, fs+1 not.
-    float* fs = aligned.fs;
-    for (int i = 0; i < 5; i++) {  // set to 5,6,7,8,9
-        fs[i] = float(i+5);
-    }
-
-    Sk4f foo = Sk4f::Load(fs);
-    Sk4f bar = Sk4f::LoadAligned(fs);
-    ASSERT_EQ(foo, bar);
-
-    foo = Sk4f::Load(fs+1);
-    ASSERT_NE(foo, bar);
-
-    foo.storeAligned(fs);
-    bar.store(fs+1);
-    REPORTER_ASSERT(r, fs[0] == 6 &&
-                       fs[1] == 5 &&
-                       fs[2] == 6 &&
-                       fs[3] == 7 &&
-                       fs[4] == 8);
-}
-
-DEF_TEST(Sk4x_Conversions, r) {
-    // Assuming IEEE floats.
-    Sk4f zerof(0,0,0,0);
-    Sk4i zeroi(0,0,0,0);
-    ASSERT_EQ(zeroi, zerof.cast<Sk4i>());
-    ASSERT_EQ(zeroi, zerof.reinterpret<Sk4i>());
-    ASSERT_EQ(zerof, zeroi.cast<Sk4f>());
-    ASSERT_EQ(zerof, zeroi.reinterpret<Sk4f>());
-
-    Sk4f twof(2,2,2,2);
-    Sk4i twoi(2,2,2,2);
-    ASSERT_EQ(twoi, twof.cast<Sk4i>());
-    ASSERT_NE(twoi, twof.reinterpret<Sk4i>());
-    ASSERT_EQ(twof, twoi.cast<Sk4f>());
-    ASSERT_NE(twof, twoi.reinterpret<Sk4f>());
-
-    ASSERT_EQ(Sk4i(0,0,0,0), Sk4f(0.5f, 0.49f, 0.51f, 0.99f).cast<Sk4i>());
-    ASSERT_EQ(Sk4i(1,1,1,1), Sk4f(1.5f, 1.49f, 1.51f, 1.99f).cast<Sk4i>());
-}
-
-DEF_TEST(Sk4x_Bits, r) {
-    ASSERT_EQ(Sk4i(0,0,0,0).bitNot(), Sk4i(-1,-1,-1,-1));
-
-    Sk4i a(2,3,4,5),
-         b(1,3,5,7);
-    ASSERT_EQ(Sk4i(0,3,4,5), a & b);
-    ASSERT_EQ(Sk4i(3,3,5,7), a | b);
-}
-
-DEF_TEST(Sk4x_Arith, r) {
-    ASSERT_EQ(Sk4f(4,6,8,10),    Sk4f(1,2,3,4) + Sk4f(3,4,5,6));
-    ASSERT_EQ(Sk4f(-2,-2,-2,-2), Sk4f(1,2,3,4) - Sk4f(3,4,5,6));
-    ASSERT_EQ(Sk4f(3,8,15,24),   Sk4f(1,2,3,4) * Sk4f(3,4,5,6));
-
-    ASSERT_EQ(Sk4f(-1,-2,-3,-4), -Sk4f(1,2,3,4));
-
-    float third = 1.0f/3.0f;
-    ASSERT_EQ(Sk4f(1*third, 0.5f, 0.6f, 2*third), Sk4f(1,2,3,4) / Sk4f(3,4,5,6));
-    ASSERT_EQ(Sk4i(4,6,8,10),    Sk4i(1,2,3,4) + Sk4i(3,4,5,6));
-    ASSERT_EQ(Sk4i(-2,-2,-2,-2), Sk4i(1,2,3,4) - Sk4i(3,4,5,6));
-    ASSERT_EQ(Sk4i(3,8,15,24),   Sk4i(1,2,3,4) * Sk4i(3,4,5,6));
-}
-
-DEF_TEST(Sk4x_ExplicitPromotion, r) {
-    ASSERT_EQ(Sk4f(2,4,6,8), Sk4f(1,2,3,4) * Sk4f(2.0f));
-}
-
-DEF_TEST(Sk4x_Sqrt, r) {
-    Sk4f squares(4, 16, 25, 121),
-           roots(2,  4,  5,  11);
-    // .sqrt() should be pretty precise.
-    Sk4f error = roots.subtract(squares.sqrt());
-    REPORTER_ASSERT(r, (error > Sk4f(-0.000001f)).allTrue());
-    REPORTER_ASSERT(r, (error < Sk4f(+0.000001f)).allTrue());
-
-    // .rsqrt() isn't so precise (for SSE), but should be pretty close.
-    error = roots.subtract(squares.multiply(squares.rsqrt()));
-    REPORTER_ASSERT(r, (error > Sk4f(-0.01f)).allTrue());
-    REPORTER_ASSERT(r, (error < Sk4f(+0.01f)).allTrue());
-}
-
-DEF_TEST(Sk4x_Comparison, r) {
-    ASSERT_EQ(Sk4f(1,2,3,4), Sk4f(1,2,3,4));
-    ASSERT_NE(Sk4f(4,3,2,1), Sk4f(1,2,3,4));
-
-    ASSERT_EQ(Sk4i(-1,-1,0,-1), Sk4f(1,2,5,4) == Sk4f(1,2,3,4));
-
-    ASSERT_EQ(Sk4i(-1,-1,-1,-1), Sk4f(1,2,3,4) <  Sk4f(2,3,4,5));
-    ASSERT_EQ(Sk4i(-1,-1,-1,-1), Sk4f(1,2,3,4) <= Sk4f(2,3,4,5));
-    ASSERT_EQ(Sk4i(0,0,0,0),     Sk4f(1,2,3,4) >  Sk4f(2,3,4,5));
-    ASSERT_EQ(Sk4i(0,0,0,0),     Sk4f(1,2,3,4) >= Sk4f(2,3,4,5));
-
-    ASSERT_EQ(Sk4i(1,2,3,4), Sk4i(1,2,3,4));
-    ASSERT_NE(Sk4i(4,3,2,1), Sk4i(1,2,3,4));
-
-    ASSERT_EQ(Sk4i(-1,-1,0,-1), Sk4i(1,2,5,4) == Sk4i(1,2,3,4));
-
-    ASSERT_EQ(Sk4i(-1,-1,-1,-1), Sk4i(1,2,3,4) <  Sk4i(2,3,4,5));
-    ASSERT_EQ(Sk4i(-1,-1,-1,-1), Sk4i(1,2,3,4) <= Sk4i(2,3,4,5));
-    ASSERT_EQ(Sk4i(0,0,0,0),     Sk4i(1,2,3,4) >  Sk4i(2,3,4,5));
-    ASSERT_EQ(Sk4i(0,0,0,0),     Sk4i(1,2,3,4) >= Sk4i(2,3,4,5));
-}
-
-DEF_TEST(Sk4x_MinMax, r) {
-    ASSERT_EQ(Sk4f(1,2,2,1), Sk4f::Min(Sk4f(1,2,3,4), Sk4f(4,3,2,1)));
-    ASSERT_EQ(Sk4f(4,3,3,4), Sk4f::Max(Sk4f(1,2,3,4), Sk4f(4,3,2,1)));
-    ASSERT_EQ(Sk4i(1,2,2,1), Sk4i::Min(Sk4i(1,2,3,4), Sk4i(4,3,2,1)));
-    ASSERT_EQ(Sk4i(4,3,3,4), Sk4i::Max(Sk4i(1,2,3,4), Sk4i(4,3,2,1)));
-}
-
-DEF_TEST(Sk4x_Swizzle, r) {
-    ASSERT_EQ(Sk4f(1,2,3,4).badc(), Sk4f(2,1,4,3));
-    ASSERT_EQ(Sk4f(1,2,3,4).aacc(), Sk4f(1,1,3,3));
-    ASSERT_EQ(Sk4f(1,2,3,4).bbdd(), Sk4f(2,2,4,4));
-
-    ASSERT_EQ(Sk4i(1,2,3,4).badc(), Sk4i(2,1,4,3));
-    ASSERT_EQ(Sk4i(1,2,3,4).aacc(), Sk4i(1,1,3,3));
-    ASSERT_EQ(Sk4i(1,2,3,4).bbdd(), Sk4i(2,2,4,4));
-}