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D.2.3.12 primes
Procedure from librarygeneral.lib (see general_lib).
- Usage:
- primes(n,m); n,m integers
- Return:
- intvec, consisting of all primes p, prime(n)<=p<=m, in increasing
order if n<=m, resp. prime(m)<=p<=n, in decreasing order if m<n.
- Note:
- prime(n); returns the biggest prime number <= min(n,32003)
if n>=2, else 2
LIB "general.lib"; primes(50,100);""; ==> 47,53,59,61,67,71,73,79,83,89,97 ==> intvec v = primes(37,1); v; ==> 37,31,29,23,19,17,13,11,7,5,3,2 |