-------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2015-538a90ded0 2015-11-01 01:51:21.173258 --------------------------------------------------------------------------------
Name : why Product : Fedora 23 Version : 2.35 Release : 9.fc23 URL : http://why.lri.fr/ Summary : Software verification platform Description : Why is a software verification platform that applies formal proving tools to annotated programs. It is currently capable of analysis of C (through "Frama-C"), Java (through the included tool "Krakatoa"), and potentially ML programs with some modification into Why's own ML-like language. Furthermore, Why is capable of analysis of any program that is mapped onto its own internal language. It uses a weakest precondition involving calculus to generate potential theorems necessary for the proof of a program's correctness. It translates these theorems into formats that can be used by external proof assistants (without any extra work Coq, PVS, HOL Light, and Mizar are supported - having one is recommended and both Coq and PVS are packaged for Fedora) and automated theorem provers (without any extra work Simplify, Alt-Ergo, Yices, Z3, CVC3, and Zenon are supported and Alt-Ergo, CVC3, and Zenon are packaged for Fedora) so that these results can be externally proven, resulting in a proof of program correctness.
Note: Each user account must be set up by running "why-config" at the command line (to set up a configuration file).
-------------------------------------------------------------------------------- Update Information:
flocq-2.5.0-1.fc23 - ensured compatibility with both Coq 8.4 and 8.5 (Flocq now provides its own version of iter_pos) - redefined ulp, so that ulp(0) is meaningful - renamed, generalized, and added lemmas in Fcore_ulp - extended predecessor and successor to nonpositive values (the previous definition of pred has been renamed pred_pos) - removed some hypotheses on lemmas of Fprop_relative - added more examples - Average: proof on Sterbenz's average and correctly- rounded average - Cody_Waite: Cody & Waite's approximation of exponential - Compute: effective FP computations with an example of sqrt(sqr(x)) in radix 5 and precision 3 - Division_u16: integer division using floating-point FMA - Triangle: Kahan's algorithm for the area of a triangle gappalib- coq-1.2.0-1.fc23 - fact database - improved handling of powers of two in mul_flt - fixed incorrect computation of the order-3 term of the relative error for division - added rewriting rules for emulating reverse propagation - proof graph - improved proof simplification - proof paths - improved performances by avoiding some absolute values - improved detection of approximate/exact pairs of expressions why3-0.86.2-1.fc23 - Minor bugfix release - Compatibility with flocq 2.5.0 - Do not ship the nonfree boomy icons why-2.35-9.fc23 - Rebuild for flocq 2.5.0, gappalib-coq 1.2.0, and why3 0.86.2 --------------------------------------------------------------------------------
This update can be installed with the "yum" update program. Use su -c 'yum update why' at the command line. For more information, refer to "Managing Software with yum", available at https://docs.fedoraproject.org/yum/.
All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/keys --------------------------------------------------------------------------------
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