astropy / regions / 818

818

Pull #219

travis-ci

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see commit 63acbd
Pull Request #219: MOCSkyRegion : a region describing Multi-Order Coverage maps

995 of 995 new or added lines in 14 files covered. (100.0%)

2920 of 3433 relevant lines covered (85.06%)

0.85 hits per line

Source File
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95.65
/regions/shapes/moc/utils.py
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def trailing_zeros(x):
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    bits = 0
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    # convention for x == 0 => return 0
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    if x == 0:
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        return 0
×
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    if not (x & 0xFFFFFFFF):




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        bits += 32




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        x >>= 32




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    if not (x & 0xFFFF):




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        bits += 16




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        x >>= 16




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    if not (x & 0xFF):




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        bits += 8




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        x >>= 8




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    if not (x & 0xF):




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        bits += 4




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        x >>= 4




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    if not (x & 0x3):




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        bits += 2




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        x >>= 2




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    if not (x & 1):




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        bits += 1




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        x >>= 1




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    return bits




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