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Avoid using the version of TensorIntDiv optimized for 32-bit integers when the divisor can be equal to one since it isn't supported.

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This commit is contained in:
Benoit Steiner
2015-11-18 11:37:58 -08:00
parent 4926251f13
commit 1dd444ea71
2 changed files with 29 additions and 7 deletions
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27
unsupported/test/cxx11_tensor_intdiv.cpp
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@@ -14,8 +14,29 @@
void test_signed_32bit()
{
// Divide by one
const Eigen::internal::TensorIntDivisor<int32_t, false> div(1);
for (int32_t j = 0; j < 25000; ++j) {
const int32_t fast_div = j / div;
const int32_t slow_div = j / 1;
VERIFY_IS_EQUAL(fast_div, slow_div);
}
// Standard divide by 2 or more
for (int32_t i = 2; i < 25000; ++i) {
const Eigen::internal::TensorIntDivisor<int32_t> div(i);
const Eigen::internal::TensorIntDivisor<int32_t, false> div(i);
for (int32_t j = 0; j < 25000; ++j) {
const int32_t fast_div = j / div;
const int32_t slow_div = j / i;
VERIFY_IS_EQUAL(fast_div, slow_div);
}
}
// Optimized divide by 2 or more
for (int32_t i = 2; i < 25000; ++i) {
const Eigen::internal::TensorIntDivisor<int32_t, true> div(i);
for (int32_t j = 0; j < 25000; ++j) {
const int32_t fast_div = j / div;
@@ -42,7 +63,7 @@ void test_unsigned_32bit()
void test_signed_64bit()
{
for (int64_t i = 2; i < 25000; ++i) {
for (int64_t i = 1; i < 25000; ++i) {
const Eigen::internal::TensorIntDivisor<int64_t> div(i);
for (int64_t j = 0; j < 25000; ++j) {
@@ -56,7 +77,7 @@ void test_signed_64bit()
void test_unsigned_64bit()
{
for (uint64_t i = 2; i < 25000; ++i) {
for (uint64_t i = 1; i < 25000; ++i) {
const Eigen::internal::TensorIntDivisor<uint64_t> div(i);
for (uint64_t j = 0; j < 25000; ++j) {