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Implement more bigint operations

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This commit is contained in:
Victor Zverovich
2019-10-06 12:34:02 -07:00
parent c41cea8b18
commit b60114533f
2 changed files with 121 additions and 44 deletions
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21
test/format-impl-test.cc
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@@ -35,6 +35,21 @@ TEST(BigIntTest, Construct) {
EXPECT_EQ("123456789abcedf0", fmt::format("{}", bigint(0x123456789abcedf0)));
}
TEST(BigIntTest, LessEqual) {
bigint n1(42);
bigint n2(42);
EXPECT_TRUE(n1 <= n2);
n2 <<= 32;
EXPECT_TRUE(n1 <= n2);
EXPECT_FALSE(n2 <= n1);
bigint n3(43);
EXPECT_TRUE(n1 <= n3);
EXPECT_FALSE(n3 <= n1);
bigint n4(42 * 0x100000001);
EXPECT_TRUE(n2 <= n4);
EXPECT_FALSE(n4 <= n2);
}
TEST(BigIntTest, ShiftLeft) {
bigint n(0x42);
n <<= 0;
@@ -89,6 +104,9 @@ TEST(BigIntTest, Square) {
bigint n3(max_value<uint64_t>());
n3.square();
EXPECT_EQ("fffffffffffffffe0000000000000001", fmt::format("{}", n3));
bigint n4;
n4.assign_pow10(10);
EXPECT_EQ("2540be400", fmt::format("{}", n4));
}
template <bool is_iec559> void test_construct_from_double() {
@@ -321,8 +339,7 @@ TEST(FormatTest, CountCodePoints) {
// Tests fmt::internal::count_digits for integer type Int.
template <typename Int> void test_count_digits() {
for (Int i = 0; i < 10; ++i) EXPECT_EQ(1u, fmt::internal::count_digits(i));
for (Int i = 1, n = 1, end = max_value<Int>() / 10; n <= end;
++i) {
for (Int i = 1, n = 1, end = max_value<Int>() / 10; n <= end; ++i) {
n *= 10;
EXPECT_EQ(i, fmt::internal::count_digits(n - 1));
EXPECT_EQ(i + 1, fmt::internal::count_digits(n));