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From: ghe@physics.orst.edu (Guangliang He)
Newsgroups: comp.unix.aix
Subject: drand48()
Keywords: BUG, work as designed
Message-ID: <1991May08.214654.26143@lynx.CS.ORST.EDU>
Date: 8 May 91 21:46:54 GMT
Sender: @lynx.CS.ORST.EDU
Reply-To: ghe@physics.orst.edu
Organization: Dept. of Physics, Oregon State University
Lines: 45
Nntp-Posting-Host: thyphy.physics.orst.edu

Can anyone tell me what kind result I should expect from the following little
C program?
-----
#include <stdio.h>

main()
{
    int i;

    for (i = 0; i < 10; i++)
        printf("%e\n", drand48());
}
-----

The answer I got from a RS/6000 is following:
1.531272e-154
1.531272e-154
1.531272e-154
1.531272e-154
1.531272e-154
1.531272e-154
1.531272e-154
1.531272e-154
1.531272e-154
1.531272e-154

While the answer from a SUN is
3.964646e-01
8.404851e-01
3.533361e-01
4.465833e-01
3.186927e-01
8.864284e-01
1.558284e-02
5.840898e-01
1.593685e-01
3.837159e-01


What is the problem on RS/6000? Is it a BUG in drand48() or is it 'work
as designed'??? :-( :-(

---
  Guangliang He                |  -----Go Blazers!-----
  ghe@physics.orst.edu         |  -----Go Blazers!-----