rand(3F)                                                 rand(3F)



NAME
     drand, irand, rand, srand - random number generator

SYNOPSIS
     integer iseed, i
     real r
     double precision dp, drand

     call srand(iseed)

     i = irand()

     r = rand()

     dp = drand()

DESCRIPTION
     irand generates successive pseudo-random numbers in the
     range from 0 to 2**31-1.  rand and drand generate pseudo-
     random numbers distributed in (0, 1.0).  srand uses its
     integer argument to re-initialize the seed for successive
     invocations of irand, rand and drand

SEE ALSO
     rand(3C).

NOTES
     When compiling source with the -Qocs option, an explicit
     underscore needs to be added to the end of the routine
     names.

























Page 1                        CX/UX Hf77 Fortran Reference Manual