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test_simd.cpp
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// SPDX-License-Identifier: Apache-2.0
// ----------------------------------------------------------------------------
// Copyright 2020-2025 Arm Limited
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy
// of the License at:
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
// ----------------------------------------------------------------------------
/**
* @brief Unit tests for the vectorized SIMD functionality.
*/
#include <limits>
#include "gtest/gtest.h"
#include "../astcenc_internal.h"
#include "../astcenc_vecmathlib.h"
namespace astcenc
{
// Misc utility tests - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
#if ASTCENC_SIMD_WIDTH == 8
/**
* @brief Construct from 8 scalar values.
*
* The value of @c a is stored to lane 0 (LSB) in the SIMD register.
*/
static vfloat8 vfloat8_lit(
float a, float b, float c, float d,
float e, float f, float g, float h
) {
alignas(32) float data[8] {
a, b, c, d, e, f, g, h
};
return vfloat8(data);
}
/**
* @brief Construct from 8 scalar values.
*
* The value of @c a is stored to lane 0 (LSB) in the SIMD register.
*/
static vint8 vint8_lit(
int a, int b, int c, int d,
int e, int f, int g, int h
) {
alignas(32) int data[8] {
a, b, c, d, e, f, g, h
};
return vint8(data);
}
#endif
static unsigned int round_down(unsigned int x)
{
unsigned int remainder = x % ASTCENC_SIMD_WIDTH;
return x - remainder;
}
static unsigned int round_up(unsigned int x)
{
unsigned int remainder = x % ASTCENC_SIMD_WIDTH;
if (!remainder)
{
return x;
}
return x - remainder + ASTCENC_SIMD_WIDTH;
}
/** @brief Test VLA loop limit round down. */
TEST(misc, RoundDownVLA)
{
// Static ones which are valid for all VLA widths
EXPECT_EQ(round_down_to_simd_multiple_vla(0), 0u);
EXPECT_EQ(round_down_to_simd_multiple_vla(8), 8u);
EXPECT_EQ(round_down_to_simd_multiple_vla(16), 16u);
// Variable ones which depend on VLA width
EXPECT_EQ(round_down_to_simd_multiple_vla(3), round_down(3));
EXPECT_EQ(round_down_to_simd_multiple_vla(5), round_down(5));
EXPECT_EQ(round_down_to_simd_multiple_vla(7), round_down(7));
EXPECT_EQ(round_down_to_simd_multiple_vla(231), round_down(231));
}
/** @brief Test VLA loop limit round up. */
TEST(misc, RoundUpVLA)
{
// Static ones which are valid for all VLA widths
EXPECT_EQ(round_up_to_simd_multiple_vla(0), 0u);
EXPECT_EQ(round_up_to_simd_multiple_vla(8), 8u);
EXPECT_EQ(round_up_to_simd_multiple_vla(16), 16u);
// Variable ones which depend on VLA width
EXPECT_EQ(round_up_to_simd_multiple_vla(3), round_up(3));
EXPECT_EQ(round_up_to_simd_multiple_vla(5), round_up(5));
EXPECT_EQ(round_up_to_simd_multiple_vla(7), round_up(7));
EXPECT_EQ(round_up_to_simd_multiple_vla(231), round_up(231));
}
#if ASTCENC_SIMD_WIDTH == 1
// VLA (1-wide) tests - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
/** @brief Test VLA change_sign. */
TEST(vfloat, ChangeSign)
{
vfloat a0(-1.0f);
vfloat b0(-1.0f);
vfloat r0 = change_sign(a0, b0);
EXPECT_EQ(r0.lane<0>(), 1.0f);
vfloat a1( 1.0f);
vfloat b1(-1.0f);
vfloat r1 = change_sign(a1, b1);
EXPECT_EQ(r1.lane<0>(), -1.0f);
vfloat a2(-3.12f);
vfloat b2( 3.12f);
vfloat r2 = change_sign(a2, b2);
EXPECT_EQ(r2.lane<0>(), -3.12f);
vfloat a3( 3.12f);
vfloat b3( 3.12f);
vfloat r3 = change_sign(a3, b3);
EXPECT_EQ(r3.lane<0>(), 3.12f);
}
/** @brief Test VLA atan. */
TEST(vfloat, Atan)
{
vfloat a0(-0.15f);
vfloat r0 = atan(a0);
EXPECT_NEAR(r0.lane<0>(), -0.149061f, 0.005f);
vfloat a1(0.0f);
vfloat r1 = atan(a1);
EXPECT_NEAR(r1.lane<0>(), 0.000000f, 0.005f);
vfloat a2(0.9f);
vfloat r2 = atan(a2);
EXPECT_NEAR(r2.lane<0>(), 0.733616f, 0.005f);
vfloat a3(2.1f);
vfloat r3 = atan(a3);
EXPECT_NEAR(r3.lane<0>(), 1.123040f, 0.005f);
}
/** @brief Test VLA atan2. */
TEST(vfloat, Atan2)
{
vfloat a0(-0.15f);
vfloat b0( 1.15f);
vfloat r0 = atan2(a0, b0);
EXPECT_NEAR(r0.lane<0>(), -0.129816f, 0.005f);
vfloat a1( 0.0f);
vfloat b1(-3.0f);
vfloat r1 = atan2(a1, b1);
EXPECT_NEAR(r1.lane<0>(), 3.141592f, 0.005f);
vfloat a2( 0.9f);
vfloat b2(-0.9f);
vfloat r2 = atan2(a2, b2);
EXPECT_NEAR(r2.lane<0>(), 2.360342f, 0.005f);
vfloat a3( 2.1f);
vfloat b3( 1.1f);
vfloat r3 = atan2(a3, b3);
EXPECT_NEAR(r3.lane<0>(), 1.084357f, 0.005f);
}
#elif ASTCENC_SIMD_WIDTH == 4
// VLA (4-wide) tests - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
/** @brief Test VLA change_sign. */
TEST(vfloat, ChangeSign)
{
vfloat4 a(-1.0f, 1.0f, -3.12f, 3.12f);
vfloat4 b(-1.0f, -1.0f, 3.12f, 3.12f);
vfloat4 r = change_sign(a, b);
EXPECT_EQ(r.lane<0>(), 1.0f);
EXPECT_EQ(r.lane<1>(), -1.0f);
EXPECT_EQ(r.lane<2>(), -3.12f);
EXPECT_EQ(r.lane<3>(), 3.12f);
}
/** @brief Test VLA atan. */
TEST(vfloat, Atan)
{
vfloat4 a(-0.15f, 0.0f, 0.9f, 2.1f);
vfloat4 r = atan(a);
EXPECT_NEAR(r.lane<0>(), -0.149061f, 0.005f);
EXPECT_NEAR(r.lane<1>(), 0.000000f, 0.005f);
EXPECT_NEAR(r.lane<2>(), 0.733616f, 0.005f);
EXPECT_NEAR(r.lane<3>(), 1.123040f, 0.005f);
}
/** @brief Test VLA atan2. */
TEST(vfloat, Atan2)
{
vfloat4 a(-0.15f, 0.0f, 0.9f, 2.1f);
vfloat4 b(1.15f, -3.0f, -0.9f, 1.1f);
vfloat4 r = atan2(a, b);
EXPECT_NEAR(r.lane<0>(), -0.129816f, 0.005f);
EXPECT_NEAR(r.lane<1>(), 3.141592f, 0.005f);
EXPECT_NEAR(r.lane<2>(), 2.360342f, 0.005f);
EXPECT_NEAR(r.lane<3>(), 1.084357f, 0.005f);
}
#elif ASTCENC_SIMD_WIDTH == 8
// VLA (8-wide) tests - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
/** @brief Test VLA change_sign. */
TEST(vfloat, ChangeSign)
{
vfloat8 a = vfloat8_lit(-1.0f, 1.0f, -3.12f, 3.12f, -1.0f, 1.0f, -3.12f, 3.12f);
vfloat8 b = vfloat8_lit(-1.0f, -1.0f, 3.12f, 3.12f, -1.0f, -1.0f, 3.12f, 3.12f);
vfloat8 r = change_sign(a, b);
alignas(32) float ra[8];
storea(r, ra);
EXPECT_EQ(ra[0], 1.0f);
EXPECT_EQ(ra[1], -1.0f);
EXPECT_EQ(ra[2], -3.12f);
EXPECT_EQ(ra[3], 3.12f);
EXPECT_EQ(ra[4], 1.0f);
EXPECT_EQ(ra[5], -1.0f);
EXPECT_EQ(ra[6], -3.12f);
EXPECT_EQ(ra[7], 3.12f);
}
/** @brief Test VLA atan. */
TEST(vfloat, Atan)
{
vfloat8 a = vfloat8_lit(-0.15f, 0.0f, 0.9f, 2.1f, -0.15f, 0.0f, 0.9f, 2.1f);
vfloat8 r = atan(a);
alignas(32) float ra[8];
storea(r, ra);
EXPECT_NEAR(ra[0], -0.149061f, 0.005f);
EXPECT_NEAR(ra[1], 0.000000f, 0.005f);
EXPECT_NEAR(ra[2], 0.733616f, 0.005f);
EXPECT_NEAR(ra[3], 1.123040f, 0.005f);
EXPECT_NEAR(ra[4], -0.149061f, 0.005f);
EXPECT_NEAR(ra[5], 0.000000f, 0.005f);
EXPECT_NEAR(ra[6], 0.733616f, 0.005f);
EXPECT_NEAR(ra[7], 1.123040f, 0.005f);
}
/** @brief Test VLA atan2. */
TEST(vfloat, Atan2)
{
vfloat8 a = vfloat8_lit(-0.15f, 0.0f, 0.9f, 2.1f, -0.15f, 0.0f, 0.9f, 2.1f);
vfloat8 b = vfloat8_lit(1.15f, -3.0f, -0.9f, 1.1f, 1.15f, -3.0f, -0.9f, 1.1f);
vfloat8 r = atan2(a, b);
alignas(32) float ra[8];
storea(r, ra);
EXPECT_NEAR(ra[0], -0.129816f, 0.005f);
EXPECT_NEAR(ra[1], 3.141592f, 0.005f);
EXPECT_NEAR(ra[2], 2.360342f, 0.005f);
EXPECT_NEAR(ra[3], 1.084357f, 0.005f);
EXPECT_NEAR(ra[4], -0.129816f, 0.005f);
EXPECT_NEAR(ra[5], 3.141592f, 0.005f);
EXPECT_NEAR(ra[6], 2.360342f, 0.005f);
EXPECT_NEAR(ra[7], 1.084357f, 0.005f);
}
#endif
static const float qnan = std::numeric_limits<float>::quiet_NaN();
alignas(32) static const float f32_data[9] {
0.0f, 1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f, 7.0f, 8.0f
};
alignas(32) static const int s32_data[9] {
0, 1, 2, 3, 4, 5 , 6, 7, 8
};
alignas(32) static const uint8_t u8_data[9] {
0, 1, 2, 3, 4, 5 , 6, 7, 8
};
// VFLOAT4 tests - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
/** @brief Test unaligned vfloat4 data load. */
TEST(vfloat4, UnalignedLoad)
{
vfloat4 a(&(f32_data[1]));
EXPECT_EQ(a.lane<0>(), 1.0f);
EXPECT_EQ(a.lane<1>(), 2.0f);
EXPECT_EQ(a.lane<2>(), 3.0f);
EXPECT_EQ(a.lane<3>(), 4.0f);
}
/** @brief Test scalar duplicated vfloat4 load. */
TEST(vfloat4, ScalarDupLoad)
{
vfloat4 a(1.1f);
EXPECT_EQ(a.lane<0>(), 1.1f);
EXPECT_EQ(a.lane<1>(), 1.1f);
EXPECT_EQ(a.lane<2>(), 1.1f);
EXPECT_EQ(a.lane<3>(), 1.1f);
}
/** @brief Test scalar vfloat4 load. */
TEST(vfloat4, ScalarLoad)
{
vfloat4 a(1.1f, 2.2f, 3.3f, 4.4f);
EXPECT_EQ(a.lane<0>(), 1.1f);
EXPECT_EQ(a.lane<1>(), 2.2f);
EXPECT_EQ(a.lane<2>(), 3.3f);
EXPECT_EQ(a.lane<3>(), 4.4f);
}
/** @brief Test copy vfloat4 load. */
TEST(vfloat4, CopyLoad)
{
vfloat4 s(1.1f, 2.2f, 3.3f, 4.4f);
vfloat4 a(s.m);
EXPECT_EQ(a.lane<0>(), 1.1f);
EXPECT_EQ(a.lane<1>(), 2.2f);
EXPECT_EQ(a.lane<2>(), 3.3f);
EXPECT_EQ(a.lane<3>(), 4.4f);
}
/** @brief Test vfloat4 scalar lane set. */
TEST(vfloat4, SetLane)
{
vfloat4 a(0.0f);
a.set_lane<0>(1.0f);
EXPECT_EQ(a.lane<0>(), 1.0f);
EXPECT_EQ(a.lane<1>(), 0.0f);
EXPECT_EQ(a.lane<2>(), 0.0f);
EXPECT_EQ(a.lane<3>(), 0.0f);
a.set_lane<1>(2.0f);
EXPECT_EQ(a.lane<0>(), 1.0f);
EXPECT_EQ(a.lane<1>(), 2.0f);
EXPECT_EQ(a.lane<2>(), 0.0f);
EXPECT_EQ(a.lane<3>(), 0.0f);
a.set_lane<2>(3.0f);
EXPECT_EQ(a.lane<0>(), 1.0f);
EXPECT_EQ(a.lane<1>(), 2.0f);
EXPECT_EQ(a.lane<2>(), 3.0f);
EXPECT_EQ(a.lane<3>(), 0.0f);
a.set_lane<3>(4.0f);
EXPECT_EQ(a.lane<0>(), 1.0f);
EXPECT_EQ(a.lane<1>(), 2.0f);
EXPECT_EQ(a.lane<2>(), 3.0f);
EXPECT_EQ(a.lane<3>(), 4.0f);
}
/** @brief Test vfloat4 zero. */
TEST(vfloat4, Zero)
{
vfloat4 a = vfloat4::zero();
EXPECT_EQ(a.lane<0>(), 0.0f);
EXPECT_EQ(a.lane<1>(), 0.0f);
EXPECT_EQ(a.lane<2>(), 0.0f);
EXPECT_EQ(a.lane<3>(), 0.0f);
}
/** @brief Test vfloat4 load1. */
TEST(vfloat4, Load1)
{
float s = 3.14f;
vfloat4 a = vfloat4::load1(&s);
EXPECT_EQ(a.lane<0>(), 3.14f);
EXPECT_EQ(a.lane<1>(), 3.14f);
EXPECT_EQ(a.lane<2>(), 3.14f);
EXPECT_EQ(a.lane<3>(), 3.14f);
}
/** @brief Test vfloat4 loada. */
TEST(vfloat4, Loada)
{
vfloat4 a = vfloat4::loada(&(f32_data[0]));
EXPECT_EQ(a.lane<0>(), 0.0f);
EXPECT_EQ(a.lane<1>(), 1.0f);
EXPECT_EQ(a.lane<2>(), 2.0f);
EXPECT_EQ(a.lane<3>(), 3.0f);
}
/** @brief Test vfloat4 swz to float4. */
TEST(vfloat4, swz4)
{
vfloat4 a(1.0f, 2.0f, 3.0f, 4.0f);
vfloat4 r = a.swz<0, 3, 2, 1>();
EXPECT_EQ(r.lane<0>(), 1.0f);
EXPECT_EQ(r.lane<1>(), 4.0f);
EXPECT_EQ(r.lane<2>(), 3.0f);
EXPECT_EQ(r.lane<3>(), 2.0f);
r = a.swz<3, 1, 1, 0>();
EXPECT_EQ(r.lane<0>(), 4.0f);
EXPECT_EQ(r.lane<1>(), 2.0f);
EXPECT_EQ(r.lane<2>(), 2.0f);
EXPECT_EQ(r.lane<3>(), 1.0f);
}
/** @brief Test vfloat4 swz to float3. */
TEST(vfloat4, swz3)
{
vfloat4 a(1.0f, 2.0f, 3.0f, 4.0f);
vfloat4 r = a.swz<0, 3, 2>();
EXPECT_EQ(r.lane<0>(), 1.0f);
EXPECT_EQ(r.lane<1>(), 4.0f);
EXPECT_EQ(r.lane<2>(), 3.0f);
EXPECT_EQ(r.lane<3>(), 0.0f);
r = a.swz<3, 1, 1>();
EXPECT_EQ(r.lane<0>(), 4.0f);
EXPECT_EQ(r.lane<1>(), 2.0f);
EXPECT_EQ(r.lane<2>(), 2.0f);
EXPECT_EQ(r.lane<3>(), 0.0f);
}
/** @brief Test vfloat4 swz to float2. */
TEST(vfloat4, swz2)
{
vfloat4 a(1.0f, 2.0f, 3.0f, 4.0f);
vfloat4 r = a.swz<0, 3>();
EXPECT_EQ(r.lane<0>(), 1.0f);
EXPECT_EQ(r.lane<1>(), 4.0f);
r = a.swz<2, 1>();
EXPECT_EQ(r.lane<0>(), 3.0f);
EXPECT_EQ(r.lane<1>(), 2.0f);
}
/** @brief Test vfloat4 add. */
TEST(vfloat4, vadd)
{
vfloat4 a(1.0f, 2.0f, 3.0f, 4.0f);
vfloat4 b(0.1f, 0.2f, 0.3f, 0.4f);
a = a + b;
EXPECT_EQ(a.lane<0>(), 1.0f + 0.1f);
EXPECT_EQ(a.lane<1>(), 2.0f + 0.2f);
EXPECT_EQ(a.lane<2>(), 3.0f + 0.3f);
EXPECT_EQ(a.lane<3>(), 4.0f + 0.4f);
}
/** @brief Test vfloat4 self-add. */
TEST(vfloat4, vselfadd1)
{
vfloat4 a(1.0f, 2.0f, 3.0f, 4.0f);
vfloat4 b(0.1f, 0.2f, 0.3f, 0.4f);
// Test increment by another variable
a += b;
EXPECT_EQ(a.lane<0>(), 1.0f + 0.1f);
EXPECT_EQ(a.lane<1>(), 2.0f + 0.2f);
EXPECT_EQ(a.lane<2>(), 3.0f + 0.3f);
EXPECT_EQ(a.lane<3>(), 4.0f + 0.4f);
// Test increment by an expression
a += b + b;
EXPECT_NEAR(a.lane<0>(), 1.0f + 0.3f, 0.001f);
EXPECT_NEAR(a.lane<1>(), 2.0f + 0.6f, 0.001f);
EXPECT_NEAR(a.lane<2>(), 3.0f + 0.9f, 0.001f);
EXPECT_NEAR(a.lane<3>(), 4.0f + 1.2f, 0.001f);
}
/** @brief Test vfloat4 sub. */
TEST(vfloat4, vsub)
{
vfloat4 a(1.0f, 2.0f, 3.0f, 4.0f);
vfloat4 b(0.1f, 0.2f, 0.3f, 0.4f);
a = a - b;
EXPECT_EQ(a.lane<0>(), 1.0f - 0.1f);
EXPECT_EQ(a.lane<1>(), 2.0f - 0.2f);
EXPECT_EQ(a.lane<2>(), 3.0f - 0.3f);
EXPECT_EQ(a.lane<3>(), 4.0f - 0.4f);
}
/** @brief Test vfloat4 mul. */
TEST(vfloat4, vmul)
{
vfloat4 a(1.0f, 2.0f, 3.0f, 4.0f);
vfloat4 b(0.1f, 0.2f, 0.3f, 0.4f);
a = a * b;
EXPECT_EQ(a.lane<0>(), 1.0f * 0.1f);
EXPECT_EQ(a.lane<1>(), 2.0f * 0.2f);
EXPECT_EQ(a.lane<2>(), 3.0f * 0.3f);
EXPECT_EQ(a.lane<3>(), 4.0f * 0.4f);
}
/** @brief Test vfloat4 mul. */
TEST(vfloat4, vsmul)
{
vfloat4 a(1.0f, 2.0f, 3.0f, 4.0f);
float b = 3.14f;
a = a * b;
EXPECT_EQ(a.lane<0>(), 1.0f * 3.14f);
EXPECT_EQ(a.lane<1>(), 2.0f * 3.14f);
EXPECT_EQ(a.lane<2>(), 3.0f * 3.14f);
EXPECT_EQ(a.lane<3>(), 4.0f * 3.14f);
}
/** @brief Test vfloat4 mul. */
TEST(vfloat4, svmul)
{
float a = 3.14f;
vfloat4 b(1.0f, 2.0f, 3.0f, 4.0f);
b = a * b;
EXPECT_EQ(b.lane<0>(), 3.14f * 1.0f);
EXPECT_EQ(b.lane<1>(), 3.14f * 2.0f);
EXPECT_EQ(b.lane<2>(), 3.14f * 3.0f);
EXPECT_EQ(b.lane<3>(), 3.14f * 4.0f);
}
/** @brief Test vfloat4 div. */
TEST(vfloat4, vdiv)
{
vfloat4 a(1.0f, 2.0f, 3.0f, 4.0f);
vfloat4 b(0.1f, 0.2f, 0.3f, 0.4f);
a = a / b;
EXPECT_EQ(a.lane<0>(), 1.0f / 0.1f);
EXPECT_EQ(a.lane<1>(), 2.0f / 0.2f);
EXPECT_EQ(a.lane<2>(), 3.0f / 0.3f);
EXPECT_EQ(a.lane<3>(), 4.0f / 0.4f);
}
/** @brief Test vfloat4 div. */
TEST(vfloat4, vsdiv)
{
vfloat4 a(1.0f, 2.0f, 3.0f, 4.0f);
float b = 0.3f;
a = a / b;
EXPECT_EQ(a.lane<0>(), 1.0f / 0.3f);
EXPECT_EQ(a.lane<1>(), 2.0f / 0.3f);
EXPECT_EQ(a.lane<2>(), 3.0f / 0.3f);
EXPECT_EQ(a.lane<3>(), 4.0f / 0.3f);
}
/** @brief Test vfloat4 div. */
TEST(vfloat4, svdiv)
{
float a = 3.0f;
vfloat4 b(0.1f, 0.2f, 0.3f, 0.4f);
b = a / b;
EXPECT_EQ(b.lane<0>(), 3.0f / 0.1f);
EXPECT_EQ(b.lane<1>(), 3.0f / 0.2f);
EXPECT_EQ(b.lane<2>(), 3.0f / 0.3f);
EXPECT_EQ(b.lane<3>(), 3.0f / 0.4f);
}
/** @brief Test vfloat4 ceq. */
TEST(vfloat4, ceq)
{
vfloat4 a1(1.0f, 2.0f, 3.0f, 4.0f);
vfloat4 b1(0.1f, 0.2f, 0.3f, 0.4f);
vmask4 r1 = a1 == b1;
EXPECT_EQ(0u, mask(r1));
EXPECT_EQ(false, any(r1));
EXPECT_EQ(false, all(r1));
vfloat4 a2(1.0f, 2.0f, 3.0f, 4.0f);
vfloat4 b2(1.0f, 0.2f, 0.3f, 0.4f);
vmask4 r2 = a2 == b2;
EXPECT_EQ(0x1u, mask(r2));
EXPECT_EQ(true, any(r2));
EXPECT_EQ(false, all(r2));
vfloat4 a3(1.0f, 2.0f, 3.0f, 4.0f);
vfloat4 b3(1.0f, 0.2f, 3.0f, 0.4f);
vmask4 r3 = a3 == b3;
EXPECT_EQ(0x5u, mask(r3));
EXPECT_EQ(true, any(r3));
EXPECT_EQ(false, all(r3));
vfloat4 a4(1.0f, 2.0f, 3.0f, 4.0f);
vmask4 r4 = a4 == a4;
EXPECT_EQ(0xFu, mask(r4));
EXPECT_EQ(true, any(r4));
EXPECT_EQ(true, all(r4));
}
/** @brief Test vfloat4 cne. */
TEST(vfloat4, cne)
{
vfloat4 a1(1.0f, 2.0f, 3.0f, 4.0f);
vfloat4 b1(0.1f, 0.2f, 0.3f, 0.4f);
vmask4 r1 = a1 != b1;
EXPECT_EQ(0xFu, mask(r1));
EXPECT_EQ(true, any(r1));
EXPECT_EQ(true, all(r1));
vfloat4 a2(1.0f, 2.0f, 3.0f, 4.0f);
vfloat4 b2(1.0f, 0.2f, 0.3f, 0.4f);
vmask4 r2 = a2 != b2;
EXPECT_EQ(0xEu, mask(r2));
EXPECT_EQ(true, any(r2));
EXPECT_EQ(false, all(r2));
vfloat4 a3(1.0f, 2.0f, 3.0f, 4.0f);
vfloat4 b3(1.0f, 0.2f, 3.0f, 0.4f);
vmask4 r3 = a3 != b3;
EXPECT_EQ(0xAu, mask(r3));
EXPECT_EQ(true, any(r3));
EXPECT_EQ(false, all(r3));
vfloat4 a4(1.0f, 2.0f, 3.0f, 4.0f);
vmask4 r4 = a4 != a4;
EXPECT_EQ(0u, mask(r4));
EXPECT_EQ(false, any(r4));
EXPECT_EQ(false, all(r4));
}
/** @brief Test vfloat4 clt. */
TEST(vfloat4, clt)
{
vfloat4 a(1.0f, 2.0f, 3.0f, 4.0f);
vfloat4 b(0.9f, 2.1f, 3.0f, 4.1f);
vmask4 r = a < b;
EXPECT_EQ(0xAu, mask(r));
}
/** @brief Test vfloat4 cle. */
TEST(vfloat4, cle)
{
vfloat4 a(1.0f, 2.0f, 3.0f, 4.0f);
vfloat4 b(0.9f, 2.1f, 3.0f, 4.1f);
vmask4 r = a <= b;
EXPECT_EQ(0xEu, mask(r));
}
/** @brief Test vfloat4 cgt. */
TEST(vfloat4, cgt)
{
vfloat4 a(1.0f, 2.0f, 3.0f, 4.0f);
vfloat4 b(0.9f, 2.1f, 3.0f, 4.1f);
vmask4 r = a > b;
EXPECT_EQ(0x1u, mask(r));
}
/** @brief Test vfloat4 cge. */
TEST(vfloat4, cge)
{
vfloat4 a(1.0f, 2.0f, 3.0f, 4.0f);
vfloat4 b(0.9f, 2.1f, 3.0f, 4.1f);
vmask4 r = a >= b;
EXPECT_EQ(0x5u, mask(r));
}
/** @brief Test vfloat4 min. */
TEST(vfloat4, min)
{
vfloat4 a(1.0f, 2.0f, 3.0f, 4.0f);
vfloat4 b(0.9f, 2.1f, 3.0f, 4.1f);
vfloat4 r = min(a, b);
EXPECT_EQ(r.lane<0>(), 0.9f);
EXPECT_EQ(r.lane<1>(), 2.0f);
EXPECT_EQ(r.lane<2>(), 3.0f);
EXPECT_EQ(r.lane<3>(), 4.0f);
float c = 0.3f;
r = min(a, c);
EXPECT_EQ(r.lane<0>(), 0.3f);
EXPECT_EQ(r.lane<1>(), 0.3f);
EXPECT_EQ(r.lane<2>(), 0.3f);
EXPECT_EQ(r.lane<3>(), 0.3f);
float d = 1.5f;
r = min(a, d);
EXPECT_EQ(r.lane<0>(), 1.0f);
EXPECT_EQ(r.lane<1>(), 1.5f);
EXPECT_EQ(r.lane<2>(), 1.5f);
EXPECT_EQ(r.lane<3>(), 1.5f);
}
/** @brief Test vfloat4 max. */
TEST(vfloat4, max)
{
vfloat4 a(1.0f, 2.0f, 3.0f, 4.0f);
vfloat4 b(0.9f, 2.1f, 3.0f, 4.1f);
vfloat4 r = max(a, b);
EXPECT_EQ(r.lane<0>(), 1.0f);
EXPECT_EQ(r.lane<1>(), 2.1f);
EXPECT_EQ(r.lane<2>(), 3.0f);
EXPECT_EQ(r.lane<3>(), 4.1f);
float c = 4.3f;
r = max(a, c);
EXPECT_EQ(r.lane<0>(), 4.3f);
EXPECT_EQ(r.lane<1>(), 4.3f);
EXPECT_EQ(r.lane<2>(), 4.3f);
EXPECT_EQ(r.lane<3>(), 4.3f);
float d = 1.5f;
r = max(a, d);
EXPECT_EQ(r.lane<0>(), 1.5f);
EXPECT_EQ(r.lane<1>(), 2.0f);
EXPECT_EQ(r.lane<2>(), 3.0f);
EXPECT_EQ(r.lane<3>(), 4.0f);
}
/** @brief Test vfloat4 clamp. */
TEST(vfloat4, clamp)
{
vfloat4 a1(1.0f, 2.0f, 3.0f, 4.0f);
vfloat4 r1 = clamp(2.1f, 3.0f, a1);
EXPECT_EQ(r1.lane<0>(), 2.1f);
EXPECT_EQ(r1.lane<1>(), 2.1f);
EXPECT_EQ(r1.lane<2>(), 3.0f);
EXPECT_EQ(r1.lane<3>(), 3.0f);
vfloat4 a2(1.0f, 2.0f, qnan, 4.0f);
vfloat4 r2 = clamp(2.1f, 3.0f, a2);
EXPECT_EQ(r2.lane<0>(), 2.1f);
EXPECT_EQ(r2.lane<1>(), 2.1f);
EXPECT_EQ(r2.lane<2>(), 2.1f);
EXPECT_EQ(r2.lane<3>(), 3.0f);
}
/** @brief Test vfloat4 clampz. */
TEST(vfloat4, clampzo)
{
vfloat4 a1(-1.0f, 0.0f, 0.1f, 4.0f);
vfloat4 r1 = clampzo(a1);
EXPECT_EQ(r1.lane<0>(), 0.0f);
EXPECT_EQ(r1.lane<1>(), 0.0f);
EXPECT_EQ(r1.lane<2>(), 0.1f);
EXPECT_EQ(r1.lane<3>(), 1.0f);
vfloat4 a2(-1.0f, 0.0f, qnan, 4.0f);
vfloat4 r2 = clampzo(a2);
EXPECT_EQ(r2.lane<0>(), 0.0f);
EXPECT_EQ(r2.lane<1>(), 0.0f);
EXPECT_EQ(r2.lane<2>(), 0.0f);
EXPECT_EQ(r2.lane<3>(), 1.0f);
}
/** @brief Test vfloat4 abs. */
TEST(vfloat4, abs)
{
vfloat4 a(-1.0f, 0.0f, 0.1f, 4.0f);
vfloat4 r = abs(a);
EXPECT_EQ(r.lane<0>(), 1.0f);
EXPECT_EQ(r.lane<1>(), 0.0f);
EXPECT_EQ(r.lane<2>(), 0.1f);
EXPECT_EQ(r.lane<3>(), 4.0f);
}
/** @brief Test vfloat4 round. */
TEST(vfloat4, round)
{
vfloat4 a1(1.1f, 1.5f, 1.6f, 4.0f);
vfloat4 r1 = round(a1);
EXPECT_EQ(r1.lane<0>(), 1.0f);
EXPECT_EQ(r1.lane<1>(), 2.0f);
EXPECT_EQ(r1.lane<2>(), 2.0f);
EXPECT_EQ(r1.lane<3>(), 4.0f);
vfloat4 a2(-2.5f, -2.5f, -3.5f, -3.5f);
vfloat4 r2 = round(a2);
EXPECT_EQ(r2.lane<0>(), -2.0f);
EXPECT_EQ(r2.lane<2>(), -4.0f);
}
/** @brief Test vfloat4 hmin. */
TEST(vfloat4, hmin)
{
vfloat4 a1(1.1f, 1.5f, 1.6f, 4.0f);
vfloat4 r1 = hmin(a1);
EXPECT_EQ(r1.lane<0>(), 1.1f);
EXPECT_EQ(r1.lane<1>(), 1.1f);
EXPECT_EQ(r1.lane<2>(), 1.1f);
EXPECT_EQ(r1.lane<3>(), 1.1f);
vfloat4 a2(1.1f, 1.5f, 1.6f, 0.2f);
vfloat4 r2 = hmin(a2);
EXPECT_EQ(r2.lane<0>(), 0.2f);
EXPECT_EQ(r2.lane<1>(), 0.2f);
EXPECT_EQ(r2.lane<2>(), 0.2f);
EXPECT_EQ(r2.lane<3>(), 0.2f);
}
/** @brief Test vfloat4 hmin_s. */
TEST(vfloat4, hmin_s)
{
vfloat4 a1(1.1f, 1.5f, 1.6f, 4.0f);
float r1 = hmin_s(a1);
EXPECT_EQ(r1, 1.1f);
vfloat4 a2(1.1f, 1.5f, 1.6f, 0.2f);
float r2 = hmin_s(a2);
EXPECT_EQ(r2, 0.2f);
}
/** @brief Test vfloat4 hmin_rgb_s. */
TEST(vfloat4, hmin_rgb_s)
{
vfloat4 a1(1.1f, 1.5f, 1.6f, 0.2f);
float r1 = hmin_rgb_s(a1);
EXPECT_EQ(r1, 1.1f);
vfloat4 a2(1.5f, 0.9f, 1.6f, 1.2f);
float r2 = hmin_rgb_s(a2);
EXPECT_EQ(r2, 0.9f);
}
/** @brief Test vfloat4 hmax. */
TEST(vfloat4, hmax)
{
vfloat4 a1(1.1f, 1.5f, 1.6f, 4.0f);
vfloat4 r1 = hmax(a1);
EXPECT_EQ(r1.lane<0>(), 4.0f);
EXPECT_EQ(r1.lane<1>(), 4.0f);
EXPECT_EQ(r1.lane<2>(), 4.0f);
EXPECT_EQ(r1.lane<3>(), 4.0f);
vfloat4 a2(1.1f, 1.5f, 1.6f, 0.2f);
vfloat4 r2 = hmax(a2);
EXPECT_EQ(r2.lane<0>(), 1.6f);
EXPECT_EQ(r2.lane<1>(), 1.6f);
EXPECT_EQ(r2.lane<2>(), 1.6f);
EXPECT_EQ(r2.lane<3>(), 1.6f);
}
/** @brief Test vfloat4 hmax_s. */
TEST(vfloat4, hmax_s)
{
vfloat4 a1(1.1f, 1.5f, 1.6f, 4.0f);
float r1 = hmax_s(a1);
EXPECT_EQ(r1, 4.0f);
vfloat4 a2(1.1f, 1.5f, 1.6f, 0.2f);
float r2 = hmax_s(a2);
EXPECT_EQ(r2, 1.6f);
}
/** @brief Test vfloat4 hadd_s. */
TEST(vfloat4, hadd_s)
{
vfloat4 a1(1.1f, 1.5f, 1.6f, 4.0f);
float sum = 1.1f + 1.5f + 1.6f + 4.0f;
float r = hadd_s(a1);
EXPECT_NEAR(r, sum, 0.005f);
}
/** @brief Test vfloat4 hadd_rgb_s. */
TEST(vfloat4, hadd_rgb_s)
{
vfloat4 a1(1.1f, 1.5f, 1.6f, 4.0f);
float sum = 1.1f + 1.5f + 1.6f;
float r = hadd_rgb_s(a1);
EXPECT_NEAR(r, sum, 0.005f);
}
/** @brief Test vfloat4 sqrt. */
TEST(vfloat4, sqrt)
{
vfloat4 a(1.0f, 2.0f, 3.0f, 4.0f);
vfloat4 r = sqrt(a);
EXPECT_EQ(r.lane<0>(), std::sqrt(1.0f));
EXPECT_EQ(r.lane<1>(), std::sqrt(2.0f));
EXPECT_EQ(r.lane<2>(), std::sqrt(3.0f));
EXPECT_EQ(r.lane<3>(), std::sqrt(4.0f));
}
/** @brief Test vfloat4 select. */
TEST(vfloat4, select)
{
vfloat4 m1(1.0f, 1.0f, 1.0f, 1.0f);
vfloat4 m2(1.0f, 2.0f, 1.0f, 2.0f);
vmask4 cond = m1 == m2;
vfloat4 a(1.0f, 3.0f, 3.0f, 1.0f);
vfloat4 b(4.0f, 2.0f, 2.0f, 4.0f);
// Select in one direction
vfloat4 r1 = select(a, b, cond);
EXPECT_EQ(r1.lane<0>(), 4.0f);
EXPECT_EQ(r1.lane<1>(), 3.0f);
EXPECT_EQ(r1.lane<2>(), 2.0f);
EXPECT_EQ(r1.lane<3>(), 1.0f);
// Select in the other
vfloat4 r2 = select(b, a, cond);
EXPECT_EQ(r2.lane<0>(), 1.0f);
EXPECT_EQ(r2.lane<1>(), 2.0f);
EXPECT_EQ(r2.lane<2>(), 3.0f);
EXPECT_EQ(r2.lane<3>(), 4.0f);
}
/** @brief Test vfloat4 gatherf. */
TEST(vfloat4, gatherf)
{
vint4 indices(0, 4, 3, 2);
vfloat4 r = gatherf(f32_data, indices);
EXPECT_EQ(r.lane<0>(), 0.0f);
EXPECT_EQ(r.lane<1>(), 4.0f);
EXPECT_EQ(r.lane<2>(), 3.0f);
EXPECT_EQ(r.lane<3>(), 2.0f);
}
/** @brief Test vfloat4 storea. */
TEST(vfloat4, storea)
{
ASTCENC_ALIGNAS float out[4];
vfloat4 a(f32_data);
storea(a, out);
EXPECT_EQ(out[0], 0.0f);
EXPECT_EQ(out[1], 1.0f);
EXPECT_EQ(out[2], 2.0f);
EXPECT_EQ(out[3], 3.0f);
}
/** @brief Test vfloat4 store. */
TEST(vfloat4, store)
{
ASTCENC_ALIGNAS float out[5];
vfloat4 a(f32_data);
store(a, &(out[1]));
EXPECT_EQ(out[1], 0.0f);
EXPECT_EQ(out[2], 1.0f);
EXPECT_EQ(out[3], 2.0f);
EXPECT_EQ(out[4], 3.0f);
}
/** @brief Test vfloat4 dot. */
TEST(vfloat4, dot)
{
vfloat4 a1(1.0f, 2.0f, 4.0f, 8.0f);
vfloat4 b1(1.0f, 0.5f, 0.25f, 0.125f);
vfloat4 r1 = dot(a1, b1);
EXPECT_EQ(r1.lane<0>(), 4.0f);
EXPECT_EQ(r1.lane<1>(), 4.0f);
EXPECT_EQ(r1.lane<2>(), 4.0f);
EXPECT_EQ(r1.lane<3>(), 4.0f);
// These values will fail to add to the same value if reassociated
float l0 = 141.2540435791015625f;
float l1 = 5345345.5000000000000000f;
float l2 = 234234.7031250000000000f;
float l3 = 124353454080.0000000000000000f;
vfloat4 a2(1.0f, 1.0f, 1.0f, 1.0f);
vfloat4 b2(l0, l1, l2, l3);
vfloat4 r2 = dot(a2, b2);
// Test that reassociation causes a failure with the numbers we chose
EXPECT_FALSE(any(r2 == vfloat4(l0 + l1 + l2 + l3)));
// Test that the sum works, for the association pattern we want used
EXPECT_TRUE(all(r2 == vfloat4((l0 + l2) + (l1 + l3))));
}
/** @brief Test vfloat4 dot_s. */
TEST(vfloat4, dot_s)
{
vfloat4 a1(1.0f, 2.0f, 4.0f, 8.0f);
vfloat4 b1(1.0f, 0.5f, 0.25f, 0.125f);
float r1 = dot_s(a1, b1);
EXPECT_EQ(r1, 4.0f);
// These values will fail to add to the same value if reassociated
float l0 = 141.2540435791015625f;
float l1 = 5345345.5000000000000000f;
float l2 = 234234.7031250000000000f;
float l3 = 124353454080.0000000000000000f;
vfloat4 a2(1.0f, 1.0f, 1.0f, 1.0f);
vfloat4 b2(l0, l1, l2, l3);
float r2 = dot_s(a2, b2);
// Test that reassociation causes a failure with the numbers we chose
EXPECT_NE(r2, l0 + l1 + l2 + l3);
// Test that the sum works, for the association pattern we want used
EXPECT_EQ(r2, (l0 + l2) + (l1 + l3));