From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham
	autolearn_force=no version=3.4.4
X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 103376,d26c6b989a75af31
X-Google-Attributes: gid103376,public
X-Google-ArrivalTime: 2002-10-13 17:24:37 PST
Path: archiver1.google.com!postnews1.google.com!not-for-mail
From: zhenggen@public1.ptt.js.cn (zhenggen)
Newsgroups: comp.lang.ada
Subject: Re: Problems with gcc, gnat and RedHat 8
Date: 13 Oct 2002 17:24:36 -0700
Organization: http://groups.google.com/
Message-ID: <7bc8e94c.0210131624.28e1bb6@posting.google.com>
References: <ao656o$2fl$1@dolly.uninett.no>
 <7bc8e94c.0210110723.1f5509b9@posting.google.com>
 <TOCp9.1756$rw2.40575@news01.chello.no>
NNTP-Posting-Host: 202.102.89.1
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 8bit
X-Trace: posting.google.com 1034555076 25321 127.0.0.1 (14 Oct 2002 00:24:36
 GMT)
X-Complaints-To: groups-abuse@google.com
NNTP-Posting-Date: 14 Oct 2002 00:24:36 GMT
Xref: archiver1.google.com comp.lang.ada:29757
Date: 2002-10-14T00:24:36+00:00
List-Id: <comp.lang.ada>

> gcc bug report database. One can work around it by importing these
> > functions from C math library.
> 
> How ?
> 
> reinert

A demo program:

with Ada.Text_Io;
use Ada.Text_Io;
with Interfaces.C;
use Interfaces.C;
with Ada.Numerics.Long_Long_Elementary_Functions;
with Ada.Numerics.Elementary_Functions;
procedure Sin_ada is
   --   pragma Linker_Options("-L/usr/lib/");
   package Llfef renames Ada.Numerics.Long_Long_Elementary_Functions;
   package Fef renames Ada.Numerics.Elementary_Functions;

   pragma Linker_Options("-lm");
   function Sinl(X:Long_Double) return Long_Double;
   function Cosl(X:Long_Double) return Long_Double;
   pragma Import(C,Sinl,"sinl");
   pragma Import(C,Cosl,"cosl");
   X,Y:Long_Double:=0.1;
   Xllf,Yllfsin,yllfcos: Long_Long_Float:=0.0;
   Xf,Yfsin,Yfcos:Float:=0.0;
begin
   Y:=Sinl(X);
   Put_Line("sinl("&Long_Double'Image(X)&")="&Long_Double'Image(Y));
   Y:=Cosl(X);
   Put_Line("cosl("&Long_Double'Image(X)&")="&Long_Double'Image(Y));
   Xllf:=0.1;
   Yllfsin:=Llfef.Sin(Xllf);
   Put_Line("yllfsin is NaN? "&Boolean'Image(not (Yllfsin=Yllfsin)));
   Put_Line("sin("&long_long_float'Image(Xllf)&")="&long_long_float'Image(Yllfsin));
   Yllfcos:=Llfef.Cos(Xllf);
   Put_Line("cos("&long_long_float'Image(Xllf)&")="&long_long_float'Image(Yllfcos));
   Put_Line("-------------");
   Xf:=0.1;
   Yfsin:=fef.Sin(Xf);
   Yfcos:=Fef.Cos(Xf);
   Put_Line("-------------");
   Put_Line("yfsin is NaN? "&Boolean'Image(not (Yfsin=Yfsin)));
   Put_Line("sin("&float'Image(Xf)&")="&float'Image(Yfsin));
   Put_Line("cos("&float'Image(Xf)&")="&float'Image(Yfcos));

end;