Index: head/math/octave-forge-interval/files/patch-mpfr__function__d.cc
===================================================================
--- head/math/octave-forge-interval/files/patch-mpfr__function__d.cc	(nonexistent)
+++ head/math/octave-forge-interval/files/patch-mpfr__function__d.cc	(revision 453088)
@@ -0,0 +1,14 @@
+--- mpfr_function_d.cc.orig	2017-08-20 08:32:14 UTC
++++ mpfr_function_d.cc
+@@ -217,7 +217,11 @@ void nthroot (
+   for (octave_idx_type i = 0; i < n; i ++)
+     {
+       mpfr_set_d (mp, arg1.elem (i), MPFR_RNDZ);
++#ifdef OCTAVE_ENSURE_LONG_DOUBLE_OPERATIONS_ARE_NOT_TRUNCATED
++      mpfr_root (mp, mp, (unsigned long long)arg2.elem(i), rnd);
++#else
+       mpfr_root (mp, mp, arg2.elem(i), rnd);
++#endif
+       arg1.elem (i) = mpfr_get_d (mp, rnd);
+     }
+ 

Property changes on: head/math/octave-forge-interval/files/patch-mpfr__function__d.cc
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