⚡️ Speed up function format_complex_number by 119% in src/black/numerics.py

[codeflash-ai]

📄 format_complex_number in src/black/numerics.py

✨ Performance Summary:

• Speed Increase: 📈 119% (1.19x faster)
• Runtime Reduction: ⏱️ From 1.19 millisecond down to 545 microseconds (best of 138 runs)

---

📝 Explanation and details

These changes should make the program slightly faster and more efficient in terms of memory usage.

---

✅ Correctness verification

The new optimized code was tested for correctness. The results are listed below:

Test	Status	Details
⚙️ Existing Unit Tests	🔘 None Found
🌀 Generated Regression Tests	✅ 38 Passed	See below
⏪ Replay Tests	🔘 None Found
🔎 Concolic Coverage Tests	✅ 1 Passed
📊 Coverage	100.0%

🌀 Generated Regression Tests Details

Click to view details

import pytest  # used for our unit tests
from black.numerics import format_complex_number

# unit tests

# Basic Test Cases
def test_standard_complex_number():
    codeflash_output = format_complex_number("123.456j")
    codeflash_output = format_complex_number("0.789j")
    codeflash_output = format_complex_number("123j")

def test_complex_number_without_leading_digits():
    codeflash_output = format_complex_number(".456j")

def test_complex_number_without_trailing_digits():
    codeflash_output = format_complex_number("123.j")

# Edge Test Cases
def test_empty_string():
    with pytest.raises(IndexError):
        format_complex_number("")


def test_leading_zeros():
    codeflash_output = format_complex_number("00123.456j")
    codeflash_output = format_complex_number("000.789j")

def test_negative_complex_numbers():
    codeflash_output = format_complex_number("-123.456j")
    codeflash_output = format_complex_number("-0.789j")
    codeflash_output = format_complex_number("-123.j")
    codeflash_output = format_complex_number("-0.j")





def test_whitespace_in_input():
    codeflash_output = format_complex_number("  123.456j  ")
    codeflash_output = format_complex_number(" 0.789j ")




def test_very_large_integer():
    large_number = "1" * 1000000 + "j"
    codeflash_output = format_complex_number(large_number)

def test_very_large_floating_point_number():
    large_number = "1" * 500000 + "." + "1" * 500000 + "j"
    codeflash_output = format_complex_number(large_number)

def test_very_large_negative_floating_point_number():
    large_number = "-" + "1" * 500000 + "." + "1" * 500000 + "j"
    codeflash_output = format_complex_number(large_number)
# codeflash_output is used to check that the output of the original code is the same as that of the optimized code.
import pytest  # used for our unit tests
from black.numerics import format_complex_number

# unit tests

# Basic Valid Inputs
def test_basic_integer_imaginary():
    codeflash_output = format_complex_number("10j")
    codeflash_output = format_complex_number("0j")

def test_basic_float_imaginary():
    codeflash_output = format_complex_number("10.5j")
    codeflash_output = format_complex_number("0.5j")

def test_float_no_integer_part():
    codeflash_output = format_complex_number(".5j")
    codeflash_output = format_complex_number(".0j")

# Edge Cases
def test_missing_fractional_part():
    codeflash_output = format_complex_number("10.j")
    codeflash_output = format_complex_number("0.j")


def test_negative_numbers():
    codeflash_output = format_complex_number("-10j")
    codeflash_output = format_complex_number("-10.5j")
    codeflash_output = format_complex_number("-0.5j")
    codeflash_output = format_complex_number("-0.j")

# Invalid Inputs

def test_empty_string():
    with pytest.raises(IndexError):
        format_complex_number("")

# Large Scale Test Cases
def test_very_large_numbers():
    codeflash_output = format_complex_number("12345678901234567890j")
    codeflash_output = format_complex_number("12345678901234567890.1234567890j")

def test_very_small_numbers():
    codeflash_output = format_complex_number("0.0000000000000001j")
    codeflash_output = format_complex_number("-0.0000000000000001j")

# Boundary Cases
def test_single_digit():
    codeflash_output = format_complex_number("1j")
    codeflash_output = format_complex_number("-1j")


def test_whitespace_handling():
    codeflash_output = format_complex_number(" 10j ".strip())
    codeflash_output = format_complex_number(" 10.5j ".strip())

---

📣 **Feedback**

If you have any feedback or need assistance, feel free to join our Discord community: