The portable rand() functions specified by ANSI C has poor randomness. The better BSD/UNIX rand48() functions are not portable.
mt is a very slightly amended version of the fast, portable and high-quality Mersenne Twister pseudo-random number mt19937ar by Makoto Matsumoto and Takuji Nishimura.
This version contains the two essential functions: mt_init() to initalize the generator and mt_drand53() to generate a random number between 0 and 1 with 53 random bits, the maximum possible uniform randomness in double précision.
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There are no reported vulnerabilities