From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 2136) id 34E483948A5E; Mon, 10 Oct 2022 12:50:59 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 34E483948A5E DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1665406259; bh=bgFEIQhbYGNfEHpo9qId9wElBkN+6/wVO/6xS/I63lU=; h=From:To:Subject:Date:From; b=Q8lM0w5ElkBj0uZoH2AsAszBk0scOPhpeXSee/4k6KhvuQ0P0I6bwICCJdDmmTypk EK70NcBQ7NlYQTt88SOpQBNcK5KnztLwJO5eYsQwzmok+BJilIKtQW9pgUl25ZzoHw ZGbXbVDzIjkOGtKvjTKvi5Mjr88wW7iwRWsD9awc= MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Aldy Hernandez To: gcc-cvs@gcc.gnu.org Subject: [gcc r13-3196] Add frange::maybe_isnan (bool sign). X-Act-Checkin: gcc X-Git-Author: Aldy Hernandez X-Git-Refname: refs/heads/master X-Git-Oldrev: 69988cd58becc115b236f88627fe92436baaa674 X-Git-Newrev: e23f7dabe6f7ce1d92bfc07d2b62cc7bcdc0caae Message-Id: <20221010125059.34E483948A5E@sourceware.org> Date: Mon, 10 Oct 2022 12:50:59 +0000 (GMT) List-Id: https://gcc.gnu.org/g:e23f7dabe6f7ce1d92bfc07d2b62cc7bcdc0caae commit r13-3196-ge23f7dabe6f7ce1d92bfc07d2b62cc7bcdc0caae Author: Aldy Hernandez Date: Mon Oct 10 13:43:16 2022 +0200 Add frange::maybe_isnan (bool sign). It is useful to know if there's the possiblity of a NAN with a given sign. This is to complement maybe_isnan(void) which returns TRUE for a NAN of any sign. A follow-up patch implementing ABS will make use of this. gcc/ChangeLog: * value-range.h (frange::maybe_isnan): New. Diff: --- gcc/value-range.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/gcc/value-range.h b/gcc/value-range.h index 484f911bd90..07a2067898c 100644 --- a/gcc/value-range.h +++ b/gcc/value-range.h @@ -323,6 +323,7 @@ public: bool known_isnan () const; bool known_isinf () const; bool maybe_isnan () const; + bool maybe_isnan (bool sign) const; bool maybe_isinf () const; bool signbit_p (bool &signbit) const; private: @@ -1295,6 +1296,18 @@ frange::maybe_isnan () const return m_pos_nan || m_neg_nan; } +// Return TRUE if range is possibly a NAN with SIGN. + +inline bool +frange::maybe_isnan (bool sign) const +{ + if (undefined_p ()) + return false; + if (sign) + return m_neg_nan; + return m_pos_nan; +} + // Return TRUE if range is a +NAN or -NAN. inline bool