digitalmars.D.bugs - [Issue 9955] New: std.math.feqrel for numbers close to zero
- d-bugmail puremagic.com (34/34) Apr 18 2013 http://d.puremagic.com/issues/show_bug.cgi?id=9955
- d-bugmail puremagic.com (14/14) Apr 18 2013 http://d.puremagic.com/issues/show_bug.cgi?id=9955
http://d.puremagic.com/issues/show_bug.cgi?id=9955 Summary: std.math.feqrel for numbers close to zero Product: D Version: D2 Platform: x86 OS/Version: Windows Status: NEW Severity: normal Priority: P2 Component: Phobos AssignedTo: nobody puremagic.com ReportedBy: bearophile_hugs eml.cc I think feqrel is not working well when numbers are close to 0.0: import std.stdio: writeln; import std.math: feqrel; void main() { feqrel(1.000000000000001, 1.0).writeln; feqrel(1.00000000001, 1.0).writeln; feqrel(1.1, 1.0).writeln; feqrel(0.000000000000001, 0.0).writeln; feqrel(0.00000000001, 0.0).writeln; feqrel(0.1, 0.0).writeln; } Prints, dmd 2.063alpha: 50 37 4 0 0 0 -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Apr 18 2013
http://d.puremagic.com/issues/show_bug.cgi?id=9955 Don <clugdbug yahoo.com.au> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |INVALID No, it's correct. They have no equal bits. What you have is something like this: 0.00000000000000100000000000000000000 0.000000000000000000000000000000000000000000000000000000000000000000000 -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Apr 18 2013