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| author | Damien George <damien.p.george@gmail.com> | 2018-03-01 15:47:17 +1100 |
|---|---|---|
| committer | Damien George <damien.p.george@gmail.com> | 2018-03-01 15:51:03 +1100 |
| commit | bc12eca461a317df842ce2e616afa97670cd0ce3 (patch) | |
| tree | 58d6bfd2ab1ba6e7ecd41730c03923f1dac932d2 /tests/float/float_format.py | |
| parent | 90e719a232dbf4039085d4fea2faf1358e408e40 (diff) | |
| download | micropython-bc12eca461a317df842ce2e616afa97670cd0ce3.tar.gz micropython-bc12eca461a317df842ce2e616afa97670cd0ce3.zip | |
py/formatfloat: Fix rounding of %f format with edge-case FP values.
Prior to this patch the %f formatting of some FP values could be off by up
to 1, eg '%.0f' % 123 would return "122" (unix x64). Depending on the FP
precision (single vs double) certain numbers would format correctly, but
others wolud not. This patch should fix all cases of rounding for %f.
Diffstat (limited to 'tests/float/float_format.py')
| -rw-r--r-- | tests/float/float_format.py | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/tests/float/float_format.py b/tests/float/float_format.py new file mode 100644 index 0000000000..4d5ad1d693 --- /dev/null +++ b/tests/float/float_format.py @@ -0,0 +1,11 @@ +# test float formatting + +# general rounding +for val in (116, 1111, 1234, 5010, 11111): + print('%.0f' % val) + print('%.1f' % val) + print('%.3f' % val) + +# make sure rounding is done at the correct precision +for prec in range(8): + print(('%%.%df' % prec) % 6e-5) |