80 lines
2.4 KiB
C++
80 lines
2.4 KiB
C++
/*
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* Copyright 2015 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "SkNx.h"
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#include "Test.h"
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template <int N, typename T>
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static void test_Nf(skiatest::Reporter* r) {
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auto assert_nearly_eq = [&](double eps, const SkNf<N,T>& v, T a, T b, T c, T d) {
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auto close = [=](T a, T b) { return fabs(a-b) <= eps; };
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T vals[4];
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v.store(vals);
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bool ok = close(vals[0], a) && close(vals[1], b)
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&& close(v.template kth<0>(), a) && close(v.template kth<1>(), b);
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REPORTER_ASSERT(r, ok);
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if (N == 4) {
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ok = close(vals[2], c) && close(vals[3], d)
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&& close(v.template kth<2>(), c) && close(v.template kth<3>(), d);
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REPORTER_ASSERT(r, ok);
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}
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};
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auto assert_eq = [&](const SkNf<N,T>& v, T a, T b, T c, T d) {
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return assert_nearly_eq(0, v, a,b,c,d);
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};
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T vals[] = {3, 4, 5, 6};
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SkNf<N,T> a = SkNf<N,T>::Load(vals),
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b(a),
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c = a;
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SkNf<N,T> d;
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d = a;
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assert_eq(a, 3, 4, 5, 6);
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assert_eq(b, 3, 4, 5, 6);
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assert_eq(c, 3, 4, 5, 6);
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assert_eq(d, 3, 4, 5, 6);
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assert_eq(a+b, 6, 8, 10, 12);
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assert_eq(a*b, 9, 16, 25, 36);
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assert_eq(a*b-b, 6, 12, 20, 30);
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assert_eq((a*b).sqrt(), 3, 4, 5, 6);
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assert_eq(a/b, 1, 1, 1, 1);
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assert_eq(-a, -3, -4, -5, -6);
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SkNf<N,T> fours(4);
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assert_eq(fours.sqrt(), 2,2,2,2);
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assert_nearly_eq(0.001, fours.rsqrt(), 0.5, 0.5, 0.5, 0.5);
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assert_eq( fours. invert(), 0.25, 0.25, 0.25, 0.25);
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assert_nearly_eq(0.001, fours.approxInvert(), 0.25, 0.25, 0.25, 0.25);
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assert_eq(SkNf<N,T>::Min(a, fours), 3, 4, 4, 4);
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assert_eq(SkNf<N,T>::Max(a, fours), 4, 4, 5, 6);
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// Test some comparisons. This is not exhaustive.
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REPORTER_ASSERT(r, (a == b).allTrue());
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REPORTER_ASSERT(r, (a+b == a*b-b).anyTrue());
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REPORTER_ASSERT(r, !(a+b == a*b-b).allTrue());
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REPORTER_ASSERT(r, !(a+b == a*b).anyTrue());
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REPORTER_ASSERT(r, !(a != b).anyTrue());
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REPORTER_ASSERT(r, (a < fours).anyTrue());
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REPORTER_ASSERT(r, (a <= fours).anyTrue());
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REPORTER_ASSERT(r, !(a > fours).allTrue());
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REPORTER_ASSERT(r, !(a >= fours).allTrue());
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}
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DEF_TEST(SkNf, r) {
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test_Nf<2, float>(r);
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test_Nf<2, double>(r);
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test_Nf<4, float>(r);
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test_Nf<4, double>(r);
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}
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