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44 lines
1.0 KiB
44 lines
1.0 KiB
""" Layer/Module Helpers
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Hacked together by / Copyright 2020 Ross Wightman
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"""
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from itertools import repeat
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import collections.abc
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# From PyTorch internals
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def _ntuple(n):
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def parse(x):
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if isinstance(x, collections.abc.Iterable) and not isinstance(x, str):
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return tuple(x)
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return tuple(repeat(x, n))
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return parse
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to_1tuple = _ntuple(1)
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to_2tuple = _ntuple(2)
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to_3tuple = _ntuple(3)
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to_4tuple = _ntuple(4)
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to_ntuple = _ntuple
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def make_divisible(v, divisor=8, min_value=None, round_limit=.9):
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min_value = min_value or divisor
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new_v = max(min_value, int(v + divisor / 2) // divisor * divisor)
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# Make sure that round down does not go down by more than 10%.
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if new_v < round_limit * v:
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new_v += divisor
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return new_v
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def extend_tuple(x, n):
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# pdas a tuple to specified n by padding with last value
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if not isinstance(x, (tuple, list)):
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x = (x,)
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else:
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x = tuple(x)
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pad_n = n - len(x)
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if pad_n <= 0:
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return x[:n]
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return x + (x[-1],) * pad_n
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