circuitpython/tests/float/float_parse_doubleprec.py
David Lechner 3dc324d3f1 tests: Format all Python code with black, except tests in basics subdir.
This adds the Python files in the tests/ directory to be formatted with
./tools/codeformat.py.  The basics/ subdirectory is excluded for now so we
aren't changing too much at once.

In a few places `# fmt: off`/`# fmt: on` was used where the code had
special formatting for readability or where the test was actually testing
the specific formatting.
2020-03-30 13:21:58 +11:00

22 lines
755 B
Python

# test parsing of floats, requiring double-precision
# very large integer part with a very negative exponent should cancel out
print(float("9" * 400 + "e-100"))
print(float("9" * 400 + "e-200"))
print(float("9" * 400 + "e-400"))
# many fractional digits
print(float("." + "9" * 400))
print(float("." + "9" * 400 + "e100"))
print(float("." + "9" * 400 + "e-100"))
# tiny fraction with large exponent
print("%.14e" % float("." + "0" * 400 + "9e100"))
print("%.14e" % float("." + "0" * 400 + "9e200"))
print("%.14e" % float("." + "0" * 400 + "9e400"))
# ensure that accuracy is retained when value is close to a subnormal
print(float("1.00000000000000000000e-307"))
print(float("10.0000000000000000000e-308"))
print(float("100.000000000000000000e-309"))