src/gromacs/simd/tests/scalar_util.cpp

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  35 #include "gmxpre.h"
  36
  37 #include <cmath>
  38
  39 #include <gtest/gtest.h>
  40
  41 #include "gromacs/simd/simd.h"
  42 #include "gromacs/utility/basedefinitions.h"
  43
  44 namespace gmx
  45 {
  46 namespace test
  47 {
  48
  49 namespace
  50 {
  51
  52 /*! \cond internal */
  53 /*! \addtogroup module_simd */
  54 /*! \{ */
  55
  56 TEST(SimdScalarUtilTest, gatherLoadTranspose)
  57 {
  58     real         data[8] = {1, 2, 3, 4, 5, 6, 7, 8};
  59     std::int32_t offset  = 1;
  60     real         v0, v1, v2, v3;
  61
  62     gatherLoadTranspose<4>(data, &offset, &v0, &v1, &v2, &v3);
  63
  64     EXPECT_EQ(data[4], v0);
  65     EXPECT_EQ(data[5], v1);
  66     EXPECT_EQ(data[6], v2);
  67     EXPECT_EQ(data[7], v3);
  68
  69     gatherLoadTranspose<2>(data, &offset, &v0, &v1);
  70
  71     EXPECT_EQ(data[2], v0);
  72     EXPECT_EQ(data[3], v1);
  73 }
  74
  75 TEST(SimdScalarUtilTest, gatherLoadUTranspose)
  76 {
  77     real         data[6] = {1, 2, 3, 4, 5, 6};
  78     std::int32_t offset  = 1;
  79     real         v0, v1, v2;
  80
  81     gatherLoadUTranspose<3>(data, &offset, &v0, &v1, &v2);
  82
  83     EXPECT_EQ(data[3], v0);
  84     EXPECT_EQ(data[4], v1);
  85     EXPECT_EQ(data[5], v2);
  86 }
  87
  88 TEST(SimdScalarUtilTest, transposeScatterStoreU)
  89 {
  90     real         data[9] = {0, 0, 0, 0, 0, 0, 0, 0, 0};
  91     std::int32_t offset  = 1;
  92     real         v0      = 1;
  93     real         v1      = 2;
  94     real         v2      = 3;
  95
  96     transposeScatterStoreU<3>(data, &offset, v0, v1, v2);
  97
  98     EXPECT_EQ(real(0.0), data[0]);
  99     EXPECT_EQ(real(0.0), data[1]);
 100     EXPECT_EQ(real(0.0), data[2]);
 101     EXPECT_EQ(v0, data[3]);
 102     EXPECT_EQ(v1, data[4]);
 103     EXPECT_EQ(v2, data[5]);
 104     EXPECT_EQ(real(0.0), data[6]);
 105     EXPECT_EQ(real(0.0), data[7]);
 106     EXPECT_EQ(real(0.0), data[8]);
 107 }
 108
 109 TEST(SimdScalarUtilTest, transposeScatterIncrU)
 110 {
 111     real         data[9] = {10, 20, 30, 40, 50, 60, 70, 80, 90};
 112     std::int32_t offset  = 1;
 113     real         v0      = 1;
 114     real         v1      = 2;
 115     real         v2      = 3;
 116
 117     transposeScatterIncrU<3>(data, &offset, v0, v1, v2);
 118
 119     EXPECT_EQ(real(10), data[0]);
 120     EXPECT_EQ(real(20), data[1]);
 121     EXPECT_EQ(real(30), data[2]);
 122     EXPECT_EQ(real(41), data[3]);
 123     EXPECT_EQ(real(52), data[4]);
 124     EXPECT_EQ(real(63), data[5]);
 125     EXPECT_EQ(real(70), data[6]);
 126     EXPECT_EQ(real(80), data[7]);
 127     EXPECT_EQ(real(90), data[8]);
 128 }
 129
 130 TEST(SimdScalarUtilTest, transposeScatterDecrU)
 131 {
 132     real         data[9] = {10, 20, 30, 40, 50, 60, 70, 80, 90};
 133     std::int32_t offset  = 1;
 134     real         v0      = 1;
 135     real         v1      = 2;
 136     real         v2      = 3;
 137
 138     transposeScatterDecrU<3>(data, &offset, v0, v1, v2);
 139
 140     EXPECT_EQ(real(10), data[0]);
 141     EXPECT_EQ(real(20), data[1]);
 142     EXPECT_EQ(real(30), data[2]);
 143     EXPECT_EQ(real(39), data[3]);
 144     EXPECT_EQ(real(48), data[4]);
 145     EXPECT_EQ(real(57), data[5]);
 146     EXPECT_EQ(real(70), data[6]);
 147     EXPECT_EQ(real(80), data[7]);
 148     EXPECT_EQ(real(90), data[8]);
 149 }
 150
 151
 152 TEST(SimdScalarTest, expandScalarsToTriplets)
 153 {
 154     real scalar = 1.234;
 155     real t0, t1, t2;
 156
 157     expandScalarsToTriplets(scalar, &t0, &t1, &t2);
 158
 159     EXPECT_EQ(scalar, t0);
 160     EXPECT_EQ(scalar, t1);
 161     EXPECT_EQ(scalar, t2);
 162 }
 163
 164 TEST(SimdScalarUtilTest, gatherLoadBySimdIntTranspose)
 165 {
 166     real         data[8] = {1, 2, 3, 4, 5, 6, 7, 8};
 167     std::int32_t offset  = 1;
 168     real         v0, v1, v2, v3;
 169
 170     gatherLoadBySimdIntTranspose<4>(data, offset, &v0, &v1, &v2, &v3);
 171
 172     EXPECT_EQ(data[4], v0);
 173     EXPECT_EQ(data[5], v1);
 174     EXPECT_EQ(data[6], v2);
 175     EXPECT_EQ(data[7], v3);
 176
 177     gatherLoadBySimdIntTranspose<2>(data, offset, &v0, &v1);
 178
 179     EXPECT_EQ(data[2], v0);
 180     EXPECT_EQ(data[3], v1);
 181 }
 182
 183 TEST(SimdScalarUtilTest, gatherLoadUBySimdIntTranspose)
 184 {
 185     real         data[8] = {1, 2, 3, 4, 5, 6, 7, 8};
 186     std::int32_t offset  = 1;
 187     real         v0, v1;
 188
 189     gatherLoadUBySimdIntTranspose<4>(data, offset, &v0, &v1);
 190
 191     EXPECT_EQ(data[4], v0);
 192     EXPECT_EQ(data[5], v1);
 193 }
 194
 195 TEST(SimdScalarUtilTest, reduceIncr4ReturnSum)
 196 {
 197     real data[6] = {0, 0, 0, 0, 0, 0};
 198     real v0      = 1;
 199     real v1      = 2;
 200     real v2      = 3;
 201     real v3      = 4;
 202     real sum;
 203
 204     sum = reduceIncr4ReturnSum(data+1, v0, v1, v2, v3);
 205
 206     EXPECT_EQ(real(0.0), data[0]);
 207     EXPECT_EQ(v0, data[1]);
 208     EXPECT_EQ(v1, data[2]);
 209     EXPECT_EQ(v2, data[3]);
 210     EXPECT_EQ(v3, data[4]);
 211     EXPECT_EQ(real(0.0), data[5]);
 212
 213     EXPECT_EQ(real(v0+v1+v2+v3), sum);
 214 }
 215
 216 /*! \} */
 217 /*! \endcond internal */
 218
 219 }      // namespace anonymous
 220 }      // namespace test
 221 }      // namespace gmx