From: Pavel M <pavel.morozkin@gmail.com>
To: newlib@sourceware.org
Subject: Fwd: gcc 11.1.0: printf("%.43f\n", 0x1.52f8a8e32e982p-140): printed value is incorrectly rounded
Date: Thu, 4 Nov 2021 00:26:16 +0300 [thread overview]
Message-ID: <CAL9Mx1utCxXFPy3vOK0ZOkX2qzt8ntQ0LEyD4WvLpCRRbTLYeQ@mail.gmail.com> (raw)
In-Reply-To: <CAL9Mx1uMOz2wfqbMpD_xfA=D9JkpFzVz6AR_DKHK34AvrGOP6w@mail.gmail.com>
---------- Forwarded message ---------
From: Pavel M <pavel.morozkin@gmail.com>
Date: Sat, 12 Jun 2021 at 23:45
Subject: gcc 11.1.0: printf("%.43f\n", 0x1.52f8a8e32e982p-140): printed
value is incorrectly rounded
To: <cygwin@cygwin.com>
Sample code (t903.c):
#include <stdio.h>
int main(void)
{
printf("%.43f\n", 0x1.52f8a8e32e982p-140);
return 0;
}
Invocations:
# gcc on Windows 10 (Cygwin)
$ gcc t903.c -Wall -Wextra -std=c11 -pedantic -Wfatal-errors && ./a.exe
0.0000000000000000000000000000000000000000010
$ gcc --version
gcc (GCC) 11.1.0
# gcc on Linux
$ gcc t903.c -Wall -Wextra -std=c11 -pedantic -Wfatal-errors && ./a.exe
0.0000000000000000000000000000000000000000009
# clang on Windows
$ clang t903.c -Wall -Wextra -std=c11 -ffp-model=strict -pedantic
-Wfatal-errors && ./a.exe
0.0000000000000000000000000000000000000000009
# cl on Windows
$ cl t903.c /std:c11 /Za /fp:strict && ./t903.exe
0.0000000000000000000000000000000000000000009
next parent reply other threads:[~2021-11-03 21:26 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAL9Mx1uMOz2wfqbMpD_xfA=D9JkpFzVz6AR_DKHK34AvrGOP6w@mail.gmail.com>
2021-11-03 21:26 ` Pavel M [this message]
2021-11-04 12:24 ` Corinna Vinschen
2021-11-04 16:48 ` Keith Packard
2021-11-04 17:27 ` Dave Nadler
2021-11-04 17:58 ` Keith Packard
2021-11-04 21:28 ` Brian Inglis
2021-11-05 2:54 ` Keith Packard
2021-11-05 16:00 ` Steven Abner
2021-11-06 12:06 ` Steven Abner
2021-11-06 23:25 ` Steven Abner
2021-11-08 9:57 ` Corinna Vinschen
2021-11-04 20:57 ` Corinna Vinschen
2021-11-28 7:43 ` Takashi Yano
2021-11-28 12:38 ` Takashi Yano
2021-11-28 13:16 ` Takashi Yano
2021-11-29 10:56 ` Takashi Yano
2021-11-29 14:24 ` Takashi Yano
2021-11-29 15:55 ` Corinna Vinschen
2021-11-30 10:51 ` Takashi Yano
2021-11-30 15:09 ` Corinna Vinschen
2021-11-30 20:38 ` Takashi Yano
2021-11-30 21:17 ` Takashi Yano
2021-12-06 9:53 ` Corinna Vinschen
2021-12-06 10:26 ` Takashi Yano
2021-12-01 12:05 ` Takashi Yano
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