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# pyboard testing functions for CPython
import time
def delay(n):
time.sleep(float(n) / 1000)
rand_seed = 1
def rand():
global rand_seed
# for these choice of numbers, see P L'Ecuyer, "Tables of linear congruential generators of different sizes and good lattice structure"
rand_seed = (rand_seed * 653276) % 8388593
return rand_seed
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