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To: "Isselmou Ould-Dellahy" <iod AT ccrl DOT mot DOT com>
cc: cygwin AT sourceware DOT cygnus DOT com
Subject: Re: JNI C return NaN for float and double 
In-reply-to: Your message of "Thu, 01 Apr 1999 18:02:26 CST."
             <199904020002 DOT SAA11002 AT eastern DOT ccrl DOT mot DOT com> 
Date: Thu, 01 Apr 1999 18:11:34 -0600
From: Mumit Khan <khan AT xraylith DOT wisc DOT EDU>

"Isselmou Ould-Dellahy" <iod AT ccrl DOT mot DOT com> writes:
> Hi,
> 
> How can I make a JNI interfaced C code, compiled as a dll, return the right
> double or float number to its java caller? In my case (see the simple
> Mummit's HelloWorld modified example below) it works fine when the returned
> type is char or short or long; but it returns a NaN in case of float or doubl
> e.
> I have cygwin-b20.1 and java 1.1.6

This bug was fixed in egcs-1.1.2. Until this release, all WINAPI aka
STDCALL functions returning floats or doubles returned garbage. Note
how I conveniently left these out of the JNI examples ;-)

See http://www.xraylith.wisc.edu/pub/khan/gnu-win32/ for egcs-1.1.2, or
ftp://ftp.xraylith.wisc.edu/pub/khan/gnu-win32/cygwin/egcs-1.1.2/ to go
straight to ftp site.

Regards,
Mumit


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