RAND(3) RAND(3) NAME rand, lrand, frand, nrand, srand - random number generator SYNOPSIS int rand( ) long lrand( ) double frand( ) int nrand(val) int val; srand(seed) int seed; DESCRIPTION Rand uses a polynominal feedback random number generator with period 2^49-2^32 to return successive uniform pseudo- random numbers x, 0<=x<2^15. Lrand returns a uniform long x, 0<=x<2^31. Frand returns a uniform double x, 0.0<=x<1.0. Nrand returns a uniform integer x, 0<=x<val. The generators are initialized by calling srand with what- ever you like as argument. To get a different starting value each time, srand((int)time(0)) should work as long as it is not called more often than once per second. BUGS Rand and lrand are quite machine-dependent. In principle frand and nrand are more portable, but only the Eighth Edi- tion has them.