source:
utilitiespy/tudelft/utilities/tools/calc.py@
1269
Last change on this file since 1269 was 1207, checked in by , 2 months ago | |
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File size: 258 bytes |
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1 | |
2 | |
3 | def truncate(n:int, nbits: int): |
4 | ''' |
5 | keep only the lowest nbits of n. This effectively keeps the number signed |
6 | but weird things will happen if n does not fit in nbits |
7 | ''' |
8 | half = 1<<(nbits-1) |
9 | return ((n+half)& ((1<<nbits)-1)) - half |
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