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Extended the range of value inputs for TensorIntDiv to support tensors with more than 4 billion elements.

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This commit is contained in:
Benoit Steiner
2015-07-22 17:02:30 -07:00
parent d259b719d1
commit 4200bdec24
3 changed files with 156 additions and 34 deletions
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46
unsupported/test/cxx11_tensor_intdiv.cpp
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@@ -67,10 +67,46 @@ void test_unsigned_64bit()
}
}
void test_powers_32bit() {
for (int expon = 1; expon < 31; expon++) {
int32_t div = (1ull << expon);
for (int num_expon = 0; num_expon < 32; num_expon++) {
int32_t start_num = (1ull << num_expon) - 100;
int32_t end_num = (1ull << num_expon) + 100;
if (start_num < 0)
start_num = 0;
for (int64_t num = start_num; num < end_num; num++) {
Eigen::internal::TensorIntDivisor<int32_t> divider =
Eigen::internal::TensorIntDivisor<int32_t>(div);
int32_t result = num/div;
int32_t result_op = divider.divide(num);
VERIFY_IS_EQUAL(result_op, result);
}
}
}
}
void test_specific()
{
// A particular combination that exposed a bug in the past.
void test_powers_64bit() {
for (int expon = 0; expon < 63; expon++) {
int64_t div = (1ull << expon);
for (int num_expon = 0; num_expon < 63; num_expon++) {
int64_t start_num = (1ull << num_expon) - 10;
int64_t end_num = (1ull << num_expon) + 10;
if (start_num < 0)
start_num = 0;
for (int64_t num = start_num; num < end_num; num++) {
Eigen::internal::TensorIntDivisor<int64_t> divider =
Eigen::internal::TensorIntDivisor<int64_t>(div);
int64_t result = num/div;
int64_t result_op = divider.divide(num);
VERIFY_IS_EQUAL(result_op, result);
}
}
}
}
void test_specific() {
// A particular combination that was previously failing
int64_t div = 209715200;
int64_t num = 3238002688;
Eigen::internal::TensorIntDivisor<int64_t> divider =
@@ -86,5 +122,7 @@ void test_cxx11_tensor_intdiv()
CALL_SUBTEST_2(test_unsigned_32bit());
CALL_SUBTEST_3(test_signed_64bit());
CALL_SUBTEST_4(test_unsigned_64bit());
CALL_SUBTEST_5(test_specific());
CALL_SUBTEST_5(test_powers_32bit());
CALL_SUBTEST_6(test_powers_64bit());
CALL_SUBTEST_7(test_specific());
}