kopia lustrzana https://github.com/peterhinch/micropython-samples
24 wiersze
487 B
Python
24 wiersze
487 B
Python
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@micropython.asm_thumb
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def reverse(r0, r1): # bytearray, len(bytearray)
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add(r4, r0, r1)
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sub(r4, 1) # end address
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label(LOOP)
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ldrb(r5, [r0, 0])
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ldrb(r6, [r4, 0])
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strb(r6, [r0, 0])
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strb(r5, [r4, 0])
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add(r0, 1)
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sub(r4, 1)
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cmp(r4, r0)
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bpl(LOOP)
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def test():
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a = bytearray([0, 1, 2, 3]) # even length
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reverse(a, len(a))
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print(a)
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a = bytearray([0, 1, 2, 3, 4]) # odd length
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reverse(a, len(a))
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print(a)
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