doc: pseudo-random-generator-next! can't return 0.0 #803
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According to the code of
S_random_state_next_double
atChezScheme/c/random.c
Lines 108 to 109 in 1f5adec
pseudo-random-generator-next!
), the value is in the range (inclusively) 1 / (m1 + 1) to m1 / (m1 + 1). Therefore, 0.0 cannot be the result.