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float_parse_doubleprec.py

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# 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"))