Library /sys$common/syshlp/helplib.hlb  —  CRTL  rand  Description
    The rand function computes a sequence of pseudorandom integers in
    the range 0 to {RAND_MAX} with a period of at least 2[32].

    The rand_r function computes a sequence of pseudorandom integers
    in the range 0 to {RAND_MAX}. The value of the {RAND_MAX} macro
    will be at least 32767.

    If rand_r is called with the same initial value for the object
    pointed to by seed and that object is not modified between
    successive returns and calls to rand_r, the same sequence is
    generated.

    See also srand.

    For other random-number algorithms, see random and all the *48
    functions.
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