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digitalmars.D.bugs - [Issue 9742] New: std.math.floor returns 0 for any value x > -1 and x < 0

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=9742

           Summary: std.math.floor returns 0 for any value x > -1 and x <
                    0
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: regression
          Priority: P2
         Component: Phobos
        AssignedTo: nobody puremagic.com
        ReportedBy: code benjamin-thaut.de


--- Comment #0 from Benjamin Thaut <code benjamin-thaut.de> 2013-03-17 11:39:26
PDT ---
The documentation says that std.math.floor

Returns the value of x rounded downward to the next integer (toward negative
infinity).

But it returns 0 for any value x > -1 and x < 0. This used to work correctly in
earlier versions of phobos.

Repro case:

import std.math;
import core.stdc.stdio;

void main(string[] args)
{
    assert(std.math.floor(-0.002f) == -1.0f);
}

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--- Comment #1 from Don <clugdbug yahoo.com.au> 2013-04-22 23:50:42 PDT ---
Using current git DMD and Phobos, works for me on D2 Linux with both 32 bit and
64bit, with and without -O.
Perhaps this is OS-specific. Can you give more details?

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--- Comment #2 from Benjamin Thaut <code benjamin-thaut.de> 2013-05-08 06:31:13
PDT ---
Yes happend to me on Windows, might be platform specific.

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Tiberiu Gal <galtiberiu gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |galtiberiu gmail.com


--- Comment #3 from Tiberiu Gal <galtiberiu gmail.com> 2013-05-26 14:14:59 PDT
---
it works on windows

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Andrei Alexandrescu <andrei erdani.com> changed:

           What    |Removed                     |Added
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                 CC|                            |andrei erdani.com


--- Comment #4 from Andrei Alexandrescu <andrei erdani.com> 2013-05-27 08:04:24
PDT ---
Can Tiberiu or somebody else confirm this works on Win32/64 with the latest
beta? Thanks!

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--- Comment #5 from Tiberiu Gal <galtiberiu gmail.com> 2013-05-27 08:54:12 PDT
---
I can only test it with win32. It works with the latest beta. 
(OT: Is there any easy way to test win64?)

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Mike Wey <mike-wey planet.nl> changed:

           What    |Removed                     |Added
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                 CC|                            |mike-wey planet.nl


--- Comment #6 from Mike Wey <mike-wey planet.nl> 2013-05-27 11:00:09 PDT ---
It works for me under Windows with the latest beta.

Both the 32 and 64 bits version are working.

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bearophile_hugs eml.cc changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |bearophile_hugs eml.cc
         Resolution|                            |WORKSFORME


--- Comment #7 from bearophile_hugs eml.cc 2013-05-27 11:54:34 PDT ---
(In reply to comment #6)
 It works for me under Windows with the latest beta.
 
 Both the 32 and 64 bits version are working.

I have only tried it on 32 bit. If you have tried it on 64 bit, then let's close this down. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
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Nick Sabalausky <cbkbbejeap mailinator.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |cbkbbejeap mailinator.com
         Resolution|WORKSFORME                  |FIXED


--- Comment #8 from Nick Sabalausky <cbkbbejeap mailinator.com> 2013-05-27
12:42:25 PDT ---
It works for me on Win32 with both 2.062 and the latest beta, when using no
cmdline switches, and also when using "-O -inline -noboundscheck".

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--- Comment #9 from Andrei Alexandrescu <andrei erdani.com> 2013-05-27 14:00:39
PDT ---
Great, thanks everyone for chiming in!

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