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| author | Scott Shawcroft <scott@tannewt.org> | 2018-07-30 12:33:44 -0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-07-30 12:33:44 -0700 |
| commit | a6d94b68453b8535398ff0b61cd6c4a0c7f77f8b (patch) | |
| tree | 8defd6392975b8145dc11f0cce9c39a4e440b32a /tests/float/float_parse_doubleprec.py | |
| parent | 433a29bb70d51abb84c77a911ced43c6ff14706e (diff) | |
| parent | b1006170f1dcfa3a9499ef31c19c8f20736b136a (diff) | |
Merge pull request #1068 from dhalbert/micropython-25ae98f-merge
Micropython 25ae98f merge
Diffstat (limited to 'tests/float/float_parse_doubleprec.py')
| -rw-r--r-- | tests/float/float_parse_doubleprec.py | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/tests/float/float_parse_doubleprec.py b/tests/float/float_parse_doubleprec.py new file mode 100644 index 000000000..dcc0dd592 --- /dev/null +++ b/tests/float/float_parse_doubleprec.py @@ -0,0 +1,21 @@ +# 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')) |