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the patch addresses a test failure in Boost.Random: ``` terminate called after throwing an instance of 'boost::wrapexcept<std::overflow_error>' what(): Error in function float_next<double>(double): Overflow Error Running 21 test cases... unknown location(0): fatal error: in "distributions_test<boost__random__piecewise_constant_distribution<boost__multiprecision__number<boost__multiprecision__backends__cpp_bin_float<100u_ (boost__multiprecision__backends__digit_base_type)10_ void_ int_ 0_ 0>_ (boost__multiprecision__expression_template_option)1>_ double>>": signal: SIGABRT (application abort requested) multiprecision_float_test.cpp(115): last checkpoint ``` The backported patch is included by boost 1.84 See https://github.com/boostorg/random/pull/88 Signed-off-by: Kefu Chai <tchaikov@gmail.com>
30 lines
1.3 KiB
Diff
30 lines
1.3 KiB
Diff
From 4239d93dad32a11e4c3829050f8070d456266133 Mon Sep 17 00:00:00 2001
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From: jzmaddock <john@johnmaddock.co.uk>
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Date: Wed, 1 Jun 2022 19:35:36 +0100
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Subject: [PATCH] Update multiprecision_float_test.cpp to not overflow type
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double. Previously the max value for uint1024_t could just squeeze into a
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double because truncation occurred during the conversion, now that cpp_int
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performs correctly rounded conversions, overflow occurs, and the computation
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fails. Changed the problem distribution to use a multiprecision weight type,
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rather than double.
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---
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test/multiprecision_float_test.cpp | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/test/multiprecision_float_test.cpp b/test/multiprecision_float_test.cpp
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index bc2a936..2b53483 100644
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--- a/libs/random/test/multiprecision_float_test.cpp
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+++ b/libs/random/test/multiprecision_float_test.cpp
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@@ -77,7 +77,7 @@ typedef boost::mpl::list <
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boost::random::lognormal_distribution<big_float>,
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boost::random::normal_distribution<big_float>,
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#ifndef BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
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- boost::random::piecewise_constant_distribution<big_float>,
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+ boost::random::piecewise_constant_distribution<big_float, big_float>,
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boost::random::piecewise_linear_distribution<big_float>,
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#endif
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boost::random::student_t_distribution<big_float>,
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--
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2.45.2
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