lrand48() -- Random-Number Function (libc)

Return a 48-bit pseudo-random number as a non-negative long integer
long lrand48();

Function lrand48() generates a  48-bit random number, then returns its high
31  bits in  the form  of a  non-negative long. The  value returned  is (or
should be) uniformly distributed throughout the range of zero through 2^31.

See Also

libc,
srand48()

© 2012 by Stephen A. Ness