digitalmars.D.bugs - [Issue 3025] New: uniform(float,float) pops first, uniform(int,int) pops last
- d-bugmail puremagic.com (31/31) May 25 2009 http://d.puremagic.com/issues/show_bug.cgi?id=3025
- d-bugmail puremagic.com (10/10) May 25 2009 http://d.puremagic.com/issues/show_bug.cgi?id=3025
- d-bugmail puremagic.com (11/11) Aug 27 2009 http://d.puremagic.com/issues/show_bug.cgi?id=3025
http://d.puremagic.com/issues/show_bug.cgi?id=3025 Summary: uniform(float,float) pops first, uniform(int,int) pops last Product: D Version: 2.030 Platform: PC OS/Version: Windows Status: NEW Severity: normal Priority: P2 Component: Phobos AssignedTo: bugzilla digitalmars.com ReportedBy: lio+bugzilla lunesu.com I noticed in random.d, uniform template, that popFront is called in different locations for integral compared to floating point types: for integral types you .front first and .popFront afterwards, but for floating point types you start with .popFront and then check .front. This has a peculiar effect: for example, if you do uniform(0.0,100.0) followed by uniform(0,100) there's a big chance that the integral part of the first random number is equal to the second random number. import std.stdio, std.random; void main() { writeln(uniform(0.0,100.0)); writeln(uniform(0,100)); } The location of .popFront should be standardized, either before or after any .front. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
May 25 2009
http://d.puremagic.com/issues/show_bug.cgi?id=3025 Andrei Alexandrescu <andrei metalanguage.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED CC| |andrei metalanguage.com AssignedTo|bugzilla digitalmars.com |andrei metalanguage.com -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
May 25 2009
http://d.puremagic.com/issues/show_bug.cgi?id=3025 Andrei Alexandrescu <andrei metalanguage.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |FIXED 22:23:09 PDT --- I always call popFront at the end now. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Aug 27 2009