public inbox for gcc-prs@sourceware.org help / color / mirror / Atom feed
From: Jos van den Oever <jos@vandenoever.info> To: nobody@gcc.gnu.org Cc: gcc-prs@gcc.gnu.org, Subject: Re: c++/10902: comparing doubles is not consistent in gcc 3.3 (SuSE version) Date: Wed, 21 May 2003 11:36:00 -0000 [thread overview] Message-ID: <20030521113601.8184.qmail@sources.redhat.com> (raw) The following reply was made to PR c++/10902; it has been noted by GNATS. From: Jos van den Oever <jos@vandenoever.info> To: gcc-gnats@gcc.gnu.org, nobody@gcc.gnu.org Cc: Subject: Re: c++/10902: comparing doubles is not consistent in gcc 3.3 (SuSE version) Date: Wed, 21 May 2003 13:34:16 +0200 Another addition to the report. Comparing doubles in c does work properly: #include <stdio.h> #include <float.h> int main() { double one = 1.0; double belowone = 1.0-DBL_EPSILON; if (one == belowone) { printf("one == belowone\n"); } else { printf("one != belowone\n"); } if (1.0 == 1.0 - DBL_EPSILON) { printf("1.0 == 1.0 - DBL_EPSILON\n"); } else { printf("1.0 != 1.0 - DBL_EPSILON\n"); } return 0; } gives output: one != belowone 1.0 != 1.0 - DBL_EPSILON
next reply other threads:[~2003-05-21 11:36 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2003-05-21 11:36 Jos van den Oever [this message] -- strict thread matches above, loose matches on Subject: below -- 2003-05-21 14:56 Jos van den Oever 2003-05-21 14:46 Wolfgang Bangerth 2003-05-21 14:36 Jos van den Oever 2003-05-21 14:14 bangerth 2003-05-21 12:36 Jos van den Oever 2003-05-21 10:33 jos
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20030521113601.8184.qmail@sources.redhat.com \ --to=jos@vandenoever.info \ --cc=gcc-prs@gcc.gnu.org \ --cc=nobody@gcc.gnu.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).