Create QDRF -- quad double real field

[williamstein]

This would be like the RealDoubleField in rings/real_double.pyx or like riungs/real_mpfr.pyx, except that the quad double library is a C++ library -- so actually this might be similar to the Givaro wrapper in rings/finite_field_givaro.*.

The quaddouble library (and docs?) are available at

http://www.cs.berkeley.edu/~yozo/

Also, I made a SAGE package, which you get by doing

    sage -i quaddouble-2.1.213.1.spkg 

Component: basic arithmetic

Issue created by migration from https://trac.sagemath.org/ticket/233

[williamstein]

Description changed:

--- 
+++ 
@@ -5,6 +5,8 @@
     http://www.cs.berkeley.edu/~yozo/

 Also, I made a SAGE package, which you get by doing
+
+```
     sage -i quaddouble-2.1.213.1.spkg 
-
+```

[85eec1a4-3d04-4b4d-b711-d4db03337c41]

comment:3

Hello,

I assume this has been done, due to the fact that we have

-rw-rw-r--  1 mabshoff mabshoff 436943 Aug 22 09:22 real_rqdf.cpp
-rw-r--r--  1 mabshoff mabshoff   3592 Jun 30 09:09 real_rqdf.pxd
-rw-r--r--  1 mabshoff mabshoff  49291 Aug 18 06:41 real_rqdf.pyx

in sage-2.8.2.rc3/devel/sage/sage/rings.

Feel free to correct me.

Cheers,

Michael

[mwhansen]

comment:4

Yep, I think this one can be closed:

sage: RQDF(pi) 3.141592653589793238462643383279502884197169399375105820974944590

[williamstein]

comment:5

closed, thanks to bradshaw and deshomme.