Mail Archives: djgpp-workers/2004/01/13/15:52:37
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In a message dated 1/13/2004 3:01:40 PM Eastern Standard Time,
eliz AT elta DOT co DOT il writes:
> Sounds okay to me, except that perhaps we should set errno to EDOM in
> all these cases.
>
That sounds fine to me. It satisfies Posix, which I like.
> Can somebody see what does glibc do in these situations?
>
Attached.
=================================================
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<HTML><FONT FACE=3Darial,helvetica><HTML><FONT SIZE=3D3 PTSIZE=3D12 FAMILY=
=3D"SERIF" FACE=3D"Georgia" LANG=3D"0">In a message dated 1/13/2004 3:01:40=20=
PM Eastern Standard Time, eliz AT elta DOT co DOT il writes:<BR>
<BR>
<BLOCKQUOTE TYPE=3DCITE style=3D"BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT=
: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px"></FONT><FONT COLOR=3D"#000000"=
BACK=3D"#ffffff" style=3D"BACKGROUND-COLOR: #ffffff" SIZE=3D2 PTSIZE=3D10 F=
AMILY=3D"SANSSERIF" FACE=3D"Arial" LANG=3D"0">Sounds okay to me, except that=
perhaps we should set errno to EDOM in<BR>
all these cases.<BR>
</BLOCKQUOTE></FONT><FONT COLOR=3D"#000000" BACK=3D"#ffffff" style=3D"BACKG=
ROUND-COLOR: #ffffff" SIZE=3D2 PTSIZE=3D10 FAMILY=3D"SANSSERIF" FACE=3D"Aria=
l" LANG=3D"0"><BR>
<BR>
</FONT><FONT COLOR=3D"#000000" BACK=3D"#ffffff" style=3D"BACKGROUND-COLOR:=20=
#ffffff" SIZE=3D3 PTSIZE=3D12 FAMILY=3D"SERIF" FACE=3D"Georgia" LANG=3D"0">T=
hat sounds fine to me. It satisfies Posix, which I like.</FONT><FONT =20=
COLOR=3D"#000000" BACK=3D"#ffffff" style=3D"BACKGROUND-COLOR: #ffffff" SIZE=
=3D2 PTSIZE=3D10 FAMILY=3D"SANSSERIF" FACE=3D"Arial" LANG=3D"0"><BR>
</FONT><FONT COLOR=3D"#000000" BACK=3D"#ffffff" style=3D"BACKGROUND-COLOR:=20=
#ffffff" SIZE=3D2 PTSIZE=3D10 FAMILY=3D"SANSSERIF" FACE=3D"Arial" LANG=3D"0"=
><BR>
<BLOCKQUOTE TYPE=3DCITE style=3D"BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT=
: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">Can somebody see what does glib=
c do in these situations?<BR>
</BLOCKQUOTE><BR>
</FONT><FONT COLOR=3D"#000000" BACK=3D"#ffffff" style=3D"BACKGROUND-COLOR:=20=
#ffffff" SIZE=3D3 PTSIZE=3D12 FAMILY=3D"SERIF" FACE=3D"Georgia" LANG=3D"0"><=
BR>
Attached. <BR>
<BR>
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D<BR>
<BR>
</FONT></HTML>
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/* Round argument to nearest integral value according to current rounding
direction.
Copyright (C) 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper AT cygnus DOT com>, 1997.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <math.h>
#include "math_private.h"
static const long double two63[2] =3D
{
9.223372036854775808000000e+18, /* 0x403E, 0x00000000, 0x00000000 */
-9.223372036854775808000000e+18 /* 0xC03E, 0x00000000, 0x00000000 */
};
long long int
__llrintl (long double x)
{
int32_t se,j0;
u_int32_t i0, i1;
long long int result;
volatile long double w;
long double t;
int sx;
GET_LDOUBLE_WORDS (se, i0, i1, x);
sx =3D (se >> 15) & 1;
j0 =3D (se & 0x7fff) - 0x3fff;
if (j0 < (int32_t) (8 * sizeof (long long int)) - 1)
{
if (j0 < -1)
=09return 0;
else if (j0 >=3D 63)
=09result =3D (((long long int) i0 << 32) | i1) << (j0 - 63);
else
=09{
=09 w =3D two63[sx] + x;
=09 t =3D w - two63[sx];
=09 GET_LDOUBLE_WORDS (se, i0, i1, t);
=09 j0 =3D (se & 0x7fff) - 0x3fff;
=09 if (j0 < 31)
=09 result =3D i0 >> (31 - j0);
=09 else
=09 result =3D ((long long int) i0 << (j0 - 31)) | (i1 >> (63 - j0));
=09}
}
else
{
/* The number is too large. It is left implementation defined
=09 what happens. */
return (long long int) x;
}
return sx ? -result : result;
}
weak_alias (__llrintl, llrintl)
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