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Date: Sat, 4 Jun 2005 13:14:10 -0400
From: Christopher Faylor <cgf-no-personal-reply-please AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: lrint() incorrect results.
Message-ID: <20050604171410.GA32605@trixie.casa.cgf.cx>
Reply-To: cygwin AT cygwin DOT com
References: <BAY14-F212498F03CFC02D16F95FED0F90 AT phx DOT gbl>
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On Sun, Jun 05, 2005 at 02:58:34AM +1000, Luke Hutchinson wrote:
>lrint() does not appear to be working correctly under Cygwin.
>
>The following simple test program compiled with g++ 3.3.3 demonstrates the 
>problem.
>
>#include <iostream>
>#include <cmath>
>
>int main(void) {
>   std::cout << "lrintf(0.5f)\t"  << lrintf(0.5f)  << "\n"
>                "lrintf(-0.5f)\t" << lrintf(-0.5f) << "\n"
>                "lrint(0.5)\t"    << lrint(0.5)    << "\n"
>                "lrint(-0.5)\t"   << lrint(0.5)    << std::endl;
>   return 0;
>}
>
>The output is
>
>lrintf(0.5f)    0
>lrintf(-0.5f)   0
>lrint(0.5)      2
>lrint(-0.5)     2
>
>Running the same code under Linux (fedora core 1) gives the expected 
>results of,
>
>lrintf(0.5f)    0
>lrintf(-0.5f)   0
>lrint(0.5)      0
>lrint(-0.5)     0

Seems to be YA newlib problem.

Dave Korn, can I press you into service to look at this since you've
previously demonstrated such amazing adeptness with newlib?  :-)

cgf

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