RANDLC is a FORTRAN90 library which implements a version of the random number generator (RNG) used by the NAS Parallel Benchmarks.
The generator has the form
X(K+1) = A * X(K) mod 2^46where the suggested value of the multiplier A is 5^13 = 1220703125.
This scheme generates 2^44 numbers before repeating.
The web site for the NAS Parallel Benchmarks is http://www.nas.nasa.gov/Resources/Software/npb.html.
The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.
RANDLC is available in a C version and a C++ version and a FORTRAN77 version and a FORTRAN90 version and a MATLAB version and a Python version.
ASA183, a FORTRAN90 library which implements the Wichman-Hill random number generator (RNG).
F90_RANDOM, FORTRAN90 programs which illustrate the use of Fortran's random number generator (RNG) routines.
NORMAL, a FORTRAN90 library which computes a sequence of pseudorandom normally distributed values.
RANDOM_SORTED, a FORTRAN90 library which generates vectors of random values which are already sorted.
RANLIB, a FORTRAN90 library which produces random samples from Probability Density Functions (PDF's), including Beta, Chi-square Exponential, F, Gamma, Multivariate normal, Noncentral chi-square, Noncentral F, Univariate normal, random permutations, Real uniform, Binomial, Negative Binomial, Multinomial, Poisson and Integer uniform, by Barry Brown and James Lovato.
RNGLIB, a FORTRAN90 library which implements a random number generator (RNG) with splitting facilities, allowing multiple independent streams to be computed, by L'Ecuyer and Cote.
UNIFORM, a FORTRAN09 library which computes elements of a pseudorandom sequence.
You can go up one level to the FORTRAN90 source codes.