From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.org/gmane.linux.lib.musl.general/11224 Path: news.gmane.org!.POSTED!not-for-mail From: fab10 <0xfab10@gmail.com> Newsgroups: gmane.linux.lib.musl.general Subject: byteswap.h Date: Fri, 7 Apr 2017 19:53:09 +0200 Message-ID: <225ea64f-f051-1a61-0ba2-db9f27d1ba68@gmail.com> Reply-To: musl@lists.openwall.com NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: blaine.gmane.org 1491587615 4696 195.159.176.226 (7 Apr 2017 17:53:35 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Fri, 7 Apr 2017 17:53:35 +0000 (UTC) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 To: musl@lists.openwall.com Original-X-From: musl-return-11239-gllmg-musl=m.gmane.org@lists.openwall.com Fri Apr 07 19:53:31 2017 Return-path: Envelope-to: gllmg-musl@m.gmane.org Original-Received: from mother.openwall.net ([195.42.179.200]) by blaine.gmane.org with smtp (Exim 4.84_2) (envelope-from ) id 1cwY4X-0008NP-Cs for gllmg-musl@m.gmane.org; Fri, 07 Apr 2017 19:53:21 +0200 Original-Received: (qmail 7547 invoked by uid 550); 7 Apr 2017 17:53:25 -0000 Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Original-Received: (qmail 7514 invoked from network); 7 Apr 2017 17:53:23 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=to:from:subject:message-id:date:user-agent:mime-version :content-transfer-encoding; bh=NZPyjQTqU50NfJXVeKDfB/z3nhZLlUywKDg509uFcTU=; b=WYCxM6y1TFc9u+3V4tIJ2SXNHsoe97LtbvXgNuuR3WfxjpzUfIETWircomu8ec4zN4 qVmk14qYd4WPXH/Bu5TrGP304uyD49jwCVtf2L9qCdiGQ+hK8zkve3MZzBu55rlAUudT SJU4qpXW4HOSRnDImeHnlK2IUHwnU1YyWGCmlUZIOii+VnxrEkIW9l2EqamZyr+C5f6P aD+Bksj2V3YLS70I63B9IoS30EjczpezM1M3Th6rVpi0rU32g+8mun6QvuWz6MvM4FGI yrkVH4M2z9x34t783hCC8VtQKwtIJ4VpPKTjK0q/peCZBtrI/DV1BIGyGsvH9mTjqahp eGTA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:to:from:subject:message-id:date:user-agent :mime-version:content-transfer-encoding; bh=NZPyjQTqU50NfJXVeKDfB/z3nhZLlUywKDg509uFcTU=; b=E14wp+P685nAsww4K8xu8FxVon/gJESgW0mcxbEgmt4uMD4sE6mKTr3Fl/qiLdChpg wJ2xNVyYSINN/dcfTH/VMV1sY+0/yTO6PPnIHLtHDsGQFoeYkN2d7ehkYJFjtSmgxmry t/VQUos11jNOebQY492AmGOBico4n1sE5r8gIl2azGdai4hykShYPpeNtmF5EJXHS6O5 Xs6JiQF9TSIApy8YNjD4Tz1eXX+0Elfkt/bC1xasdX8z+raRxMJW4pu3QUP3lWpPZtVD 6UqMXxGp34a+Vz5Zn7qlXGYx52oH3+eT4+xuKkxBSqE2I4DfWvNLnTH+FIp+WQprAd1k Y/LA== X-Gm-Message-State: AN3rC/5vRZqp5MTlz2qOx+6IBejyOCENWToIjggZ1s+0d8nxA82NkrFE g7xmHMbMpupdRMcM17Y= X-Received: by 10.28.16.148 with SMTP id 142mr459183wmq.75.1491587592143; Fri, 07 Apr 2017 10:53:12 -0700 (PDT) Xref: news.gmane.org gmane.linux.lib.musl.general:11224 Archived-At: I had a look at byteswap.h and it seems to me that the code is not very efficient. Every function in this header could be translated in a single assembly instruction with the gcc intrinsics: __builtin_bswap16 __builtin_bswap32 __builtin_bswap64 Is there a reason to not use these gcc intrinsics? Bye