forfudan · forfudan · Mar 15, 2025 · Mar 15, 2025 · Mar 15, 2025 · Mar 15, 2025
diff --git a/docs/todo.md b/docs/todo.md
@@ -2,4 +2,4 @@
 
 This is a to-do list for Yuhao's personal use.
 
-- The `exp()` function performs slower than Python's counterpart in specific cases. Detailed investigation reveals the bottleneck stems from multiplication operations between decimals with significant fractional components. These operations currently rely on UInt256 arithmetic, which introduces performance overhead. Optimization of the `multiply()` function is required to address these performance bottlenecks, particularly for high-precision decimal multiplication with many digits after the decimal point.
+- [x] (#31) The `exp()` function performs slower than Python's counterpart in specific cases. Detailed investigation reveals the bottleneck stems from multiplication operations between decimals with significant fractional components. These operations currently rely on UInt256 arithmetic, which introduces performance overhead. Optimization of the `multiply()` function is required to address these performance bottlenecks, particularly for high-precision decimal multiplication with many digits after the decimal point.
diff --git a/mojoproject.toml b/mojoproject.toml
@@ -40,6 +40,7 @@ test_round = "magic run package && magic run mojo test tests/test_round.mojo &&
 test_creation = "magic run package && magic run mojo test tests/test_creation.mojo && magic run delete_package"
 test_from_float = "magic run package && magic run mojo test tests/test_from_float.mojo && magic run delete_package"
 test_from_string = "magic run package && magic run mojo test tests/test_from_string.mojo && magic run delete_package"
+test_to_float = "magic run package && magic run mojo test tests/test_to_float.mojo && magic run delete_package"
 test_comparison = "magic run package && magic run mojo test tests/test_comparison.mojo && magic run delete_package"
 test_factorial = "magic run package && magic run mojo test tests/test_factorial.mojo && magic run delete_package"
 test_exp = "magic run package && magic run mojo test tests/test_exp.mojo && magic run delete_package"

diff --git a/src/decimojo/__init__.mojo b/src/decimojo/__init__.mojo
@@ -1,5 +1,4 @@
 # ===----------------------------------------------------------------------=== #
-#
 # DeciMojo: A fixed-point decimal arithmetic library in Mojo
 # https://github.com/forFudan/DeciMojo
 #
@@ -16,7 +15,6 @@
 # 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.
-#
 # ===----------------------------------------------------------------------=== #
 
 """

diff --git a/src/decimojo/arithmetics.mojo b/src/decimojo/arithmetics.mojo
@@ -1,5 +1,4 @@
 # ===----------------------------------------------------------------------=== #
-#
 # DeciMojo: A fixed-point decimal arithmetic library in Mojo
 # https://github.com/forFudan/DeciMojo
 #
@@ -16,7 +15,6 @@
 # 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.
-#
 # ===----------------------------------------------------------------------=== #
 #
 # Implements basic arithmetic functions for the Decimal type

diff --git a/src/decimojo/comparison.mojo b/src/decimojo/comparison.mojo
@@ -1,5 +1,4 @@
 # ===----------------------------------------------------------------------=== #
-#
 # DeciMojo: A fixed-point decimal arithmetic library in Mojo
 # https://github.com/forFudan/DeciMojo
 #
@@ -16,7 +15,6 @@
 # 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.
-#
 # ===----------------------------------------------------------------------=== #
 #
 # Implements comparison operations for the Decimal type

diff --git a/src/decimojo/decimal.mojo b/src/decimojo/decimal.mojo
@@ -1,5 +1,4 @@
 # ===----------------------------------------------------------------------=== #
-#
 # DeciMojo: A fixed-point decimal arithmetic library in Mojo
 # https://github.com/forFudan/DeciMojo
 #
@@ -16,7 +15,6 @@
 # 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.
-#
 # ===----------------------------------------------------------------------=== #
 #
 # Implements basic object methods for the Decimal type
@@ -967,7 +965,7 @@ struct Decimal(
             The floating-point representation of this Decimal.
         """
 
-        var result = Float64(self.coefficient()) / (10 ** self.scale())
+        var result = Float64(self.coefficient()) / (Float64(10) ** self.scale())
         result = -result if self.is_negative() else result
 
         return result

diff --git a/src/decimojo/exponential.mojo b/src/decimojo/exponential.mojo
@@ -1,5 +1,4 @@
 # ===----------------------------------------------------------------------=== #
-#
 # DeciMojo: A fixed-point decimal arithmetic library in Mojo
 # https://github.com/forFudan/DeciMojo
 #
@@ -16,7 +15,6 @@
 # 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.
-#
 # ===----------------------------------------------------------------------=== #
 #
 # Implements exponential functions for the Decimal type

diff --git a/src/decimojo/prelude.mojo b/src/decimojo/prelude.mojo
@@ -1,5 +1,4 @@
 # ===----------------------------------------------------------------------=== #
-#
 # DeciMojo: A fixed-point decimal arithmetic library in Mojo
 # https://github.com/forFudan/DeciMojo
 #
@@ -16,7 +15,6 @@
 # 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.
-#
 # ===----------------------------------------------------------------------=== #
 
 """

diff --git a/src/decimojo/rounding.mojo b/src/decimojo/rounding.mojo
@@ -1,5 +1,4 @@
 # ===----------------------------------------------------------------------=== #
-#
 # DeciMojo: A fixed-point decimal arithmetic library in Mojo
 # https://github.com/forFudan/DeciMojo
 #
@@ -16,7 +15,6 @@
 # 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.
-#
 # ===----------------------------------------------------------------------=== #
 #
 # Implements basic object methods for the Decimal type

diff --git a/src/decimojo/rounding_mode.mojo b/src/decimojo/rounding_mode.mojo
@@ -1,5 +1,4 @@
 # ===----------------------------------------------------------------------=== #
-#
 # DeciMojo: A fixed-point decimal arithmetic library in Mojo
 # https://github.com/forFudan/DeciMojo
 #
@@ -16,7 +15,6 @@
 # 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.
-#
 # ===----------------------------------------------------------------------=== #
 
 

diff --git a/src/decimojo/special.mojo b/src/decimojo/special.mojo
@@ -1,5 +1,4 @@
 # ===----------------------------------------------------------------------=== #
-#
 # DeciMojo: A fixed-point decimal arithmetic library in Mojo
 # https://github.com/forFudan/DeciMojo
 #
@@ -16,7 +15,6 @@
 # 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.
-#
 # ===----------------------------------------------------------------------=== #
 #
 # Implements special functions for the Decimal type

diff --git a/src/decimojo/utility.mojo b/src/decimojo/utility.mojo
@@ -1,5 +1,4 @@
 # ===----------------------------------------------------------------------=== #
-#
 # DeciMojo: A fixed-point decimal arithmetic library in Mojo
 # https://github.com/forFudan/DeciMojo
 #
@@ -16,7 +15,6 @@
 # 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.
-#
 # ===----------------------------------------------------------------------=== #
 #
 # Implements internal utility functions for the Decimal type

diff --git a/tests/test_conversions.mojo b/tests/test_conversions.mojo
Original file line number	Diff line number	Diff line change
Expand Up		@@ -2,4 +2,4 @@

		This is a to-do list for Yuhao's personal use.

		- The `exp()` function performs slower than Python's counterpart in specific cases. Detailed investigation reveals the bottleneck stems from multiplication operations between decimals with significant fractional components. These operations currently rely on UInt256 arithmetic, which introduces performance overhead. Optimization of the `multiply()` function is required to address these performance bottlenecks, particularly for high-precision decimal multiplication with many digits after the decimal point.
		- [x] (#31) The `exp()` function performs slower than Python's counterpart in specific cases. Detailed investigation reveals the bottleneck stems from multiplication operations between decimals with significant fractional components. These operations currently rely on UInt256 arithmetic, which introduces performance overhead. Optimization of the `multiply()` function is required to address these performance bottlenecks, particularly for high-precision decimal multiplication with many digits after the decimal point.