From c524232f734de875d69e2f190f01a6c976024368 Mon Sep 17 00:00:00 2001 From: Gard Spreemann Date: Thu, 14 Jun 2018 20:39:01 +0200 Subject: GUDHI 2.2.0 as released by upstream in a tarball. --- include/gudhi/Bottleneck.h | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'include/gudhi/Bottleneck.h') diff --git a/include/gudhi/Bottleneck.h b/include/gudhi/Bottleneck.h index 7aee07bb..b0fc3949 100644 --- a/include/gudhi/Bottleneck.h +++ b/include/gudhi/Bottleneck.h @@ -4,7 +4,7 @@ * * Author: Francois Godi * - * Copyright (C) 2015 INRIA + * Copyright (C) 2015 Inria * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -30,6 +30,7 @@ #include // for numeric_limits #include +#include // FLT_EVAL_METHOD namespace Gudhi { @@ -43,6 +44,13 @@ double bottleneck_distance_approx(Persistence_graph& g, double e) { Graph_matching biggest_unperfect(g); while (b_upper_bound - b_lower_bound > 2 * e) { double step = b_lower_bound + (b_upper_bound - b_lower_bound) / alpha; +#if !defined FLT_EVAL_METHOD || FLT_EVAL_METHOD < 0 || FLT_EVAL_METHOD > 1 + // On platforms where double computation is done with excess precision, + // we force it to its true precision so the following test is reliable. + volatile double drop_excess_precision = step; + step = drop_excess_precision; + // Alternative: step = CGAL::IA_force_to_double(step); +#endif if (step <= b_lower_bound || step >= b_upper_bound) // Avoid precision problem break; m.set_r(step); -- cgit v1.2.3