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[v3] libstdc++/47913 (again)

From: Paolo Carlini <paolo dot carlini at oracle dot com>
To: "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>
Cc: libstdc++ <libstdc++ at gcc dot gnu dot org>
Date: Thu, 05 May 2011 01:30:50 +0200
Subject: [v3] libstdc++/47913 (again)

Hi,

Marc kindly contributed the below rewrite of std::ratio_add (and ratio_less), algorithmically derived from the macro __udiv_qrnnd_c in gcc's longlong.h, which amounts to the best behavior in terms of accepted inputs: a pair of std::ratio is *never* rejected unless the resulting std::ratio would not be legal.

Tested x86_64-linux multilib, committed to mainline.

Paolo.

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Attachment: CL_47913_again
Description: Text document

Attachment: patch_47913_again
Description: Text document

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