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⚡️ Speed up function _depth by 26% #205

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⚡️ Speed up function _depth by 26% #205

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8 changes: 7 additions & 1 deletion keras/src/applications/mobilenet_v3.py
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Original file line number Diff line number Diff line change
Expand Up @@ -561,7 +561,13 @@ def hard_swish(x):
def _depth(v, divisor=8, min_value=None):
if min_value is None:
min_value = divisor
new_v = max(min_value, int(v + divisor / 2) // divisor * divisor)
# Compute new_v without creating intermediate float; avoid float division
# by using integer math where possible
vd = int(v)
new_v = ((vd + divisor // 2) // divisor) * divisor
if new_v < min_value:
new_v = min_value
# Make sure that round down does not go down by more than 10%.
# Make sure that round down does not go down by more than 10%.
if new_v < 0.9 * v:
new_v += divisor
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