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20 lines
436 B
Cython
20 lines
436 B
Cython
from libc.stdint cimport *
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cdef uint32_t A = 1664525
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cdef uint32_t C = 1013904223
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cdef uint32_t state = C
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cdef int32_t MAX_INT = 2**31 - 1
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cpdef uint32_t nextFastRand():
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global state
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state = A * state + C
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return state
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cpdef uint32_t rand_int(uint32_t range):
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return nextFastRand() % range
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cpdef double rand_double(double range):
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return nextFastRand() * range / MAX_INT
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cpdef bint rand_bool():
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return nextFastRand() % 2
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