#11920: Sympow needs specify -ffp-contract=on and should create datafiles
------------------------+---------------------------------------------------
Reporter: jdemeyer | Owner: tbd
Type: defect | Status: needs_review
Priority: major | Milestone: sage-4.7.3
Component: packages | Keywords:
Work_issues: | Upstream: None of the above - read trac for
reasoning.
Reviewer: | Author: Jeroen Demeyer
Merged: | Dependencies:
------------------------+---------------------------------------------------
Comment(by leif):
P.S.:
{{{
Linux silius 2.6.32.46-0.3-ppc64 #1 SMP 2011-09-29 17:49:31 +0200 ppc64
ppc64 ppc64 GNU/Linux
****************************************************
****************************************************
CC Version
gcc -v
Using built-in specs.
Target: powerpc64-unknown-linux-gnu
Configured with: ../gcc-4.4.6/configure -v
--prefix=/home/leif/local/silius/ --program-suffix=-4.4.6 --enable-
languages=c,c++,fortran --enable-plugins --enable-lto --enable-gold
--enable-version-specific-runtime-libs --with-cpu=power7 --with-
tune=power7 --with-gmp=/home/leif/local/silius/ --with-
mpfr=/home/leif/local/silius/ --with-mpc=/home/leif/local/silius/
Thread model: posix
gcc version 4.4.6 (GCC)
****************************************************
patching file Configure
patching file generate.c
patching file fpu.c
The double precision of your FPU is 105 bits.
The Quad Double library used by SYMPOW assumes IEEE-754 double precision
numbers with exactly 53 bits in the mantissa (64 bits in total).
Unfortunately, we currently have no workaround for your system.
Running SYMPOW will surely fail. Please report this problem to
sage-devel (http://groups.google.com/group/sage-devel),
mentioning in particular your operating system, processor type
and compiler version (run gcc --version).
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11920#comment:10>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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