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///////////////////////////////////////////////////////////////
// Copyright Christopher Kormanyos 2002 - 2011.
// Copyright 2011 John Maddock. Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt
//
// This work is based on an earlier work:
// "Algorithm 910: A Portable C++ Multiple-Precision System for Special-Function Calculations",
// in ACM TOMS, {VOL 37, ISSUE 4, (February 2011)} (C) ACM, 2011. http://doi.acm.org/10.1145/1916461.1916469
#ifdef _MSC_VER
#define _SCL_SECURE_NO_WARNINGS
#endif
#include <boost/detail/lightweight_test.hpp>
#include "test.hpp"
#include <boost/multiprecision/mpfi.hpp>
template <class T>
T make_rvalue_copy(const T a)
{
return a;
}
int main()
{
using namespace boost::multiprecision;
//
// Test change of default precision:
//
mpfi_float::default_precision(100);
mpfi_float a("0.1");
BOOST_CHECK_EQUAL(a.precision(), 100);
mpfi_float::default_precision(20);
{
// test assignment from lvalue:
mpfi_float b(2);
BOOST_CHECK_EQUAL(b.precision(), 20);
b = a;
BOOST_CHECK_EQUAL(b.precision(), a.precision());
}
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
{
// test assignment from rvalue:
mpfi_float b(2);
BOOST_CHECK_EQUAL(b.precision(), 20);
b = make_rvalue_copy(a);
BOOST_CHECK_EQUAL(b.precision(), a.precision());
}
#endif
mpfi_float::default_precision(20);
{
// test construct from lvalue:
mpfi_float b(a);
BOOST_CHECK_EQUAL(b.precision(), 100);
}
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
{
// test construct from rvalue:
mpfi_float b(make_rvalue_copy(a));
BOOST_CHECK_EQUAL(b.precision(), 100);
}
#endif
{
mpfi_float f150(2, 2, 150);
BOOST_CHECK_EQUAL(f150.precision(), 150);
}
{
mpfi_float f150("1.2", "1.2", 150);
BOOST_CHECK_EQUAL(f150.precision(), 150);
}
//
// From https://github.com/boostorg/multiprecision/issues/65
//
{
mpfi_float a(2);
a.precision(100);
BOOST_CHECK_EQUAL(a, 2);
BOOST_CHECK_EQUAL(a.precision(), 100);
}
//
// string_view with explicit precision:
//
#ifndef BOOST_NO_CXX17_HDR_STRING_VIEW
{
std::string s("222");
std::string_view v(s.c_str(), 1);
mpfi_float f(v, v, 100);
BOOST_CHECK_EQUAL(f, 2);
BOOST_CHECK_EQUAL(f.precision(), 100);
}
#endif
// Swap:
{
mpfi_float x(2, 2, 100); // 100 digits precision.
mpfi_float y(3, 3, 50); // 50 digits precision.
swap(x, y);
BOOST_CHECK_EQUAL(x, 3);
BOOST_CHECK_EQUAL(y, 2);
BOOST_CHECK_EQUAL(x.precision(), 50);
BOOST_CHECK_EQUAL(y.precision(), 100);
x.swap(y);
BOOST_CHECK_EQUAL(x, 2);
BOOST_CHECK_EQUAL(y, 3);
BOOST_CHECK_EQUAL(x.precision(), 100);
BOOST_CHECK_EQUAL(y.precision(), 50);
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
x = std::move(mpfi_float(y));
BOOST_CHECK_EQUAL(x, y);
BOOST_CHECK_EQUAL(x.precision(), y.precision());
#endif
}
{
mpfi_float c(4), d(8), e(9), f;
f = (c + d) * d / e;
mpfi_float g((c + d) * d / e);
}
{
mpfi_float::default_precision(100);
mpfi_float f1;
f1 = 3;
BOOST_CHECK_EQUAL(f1.precision(), 100);
f1 = 3.5;
BOOST_CHECK_EQUAL(f1.precision(), 100);
mpfi_float f2(3.5);
BOOST_CHECK_EQUAL(f2.precision(), 100);
mpfi_float f3("5.1");
BOOST_CHECK_EQUAL(f3.precision(), 100);
mpfi_float::default_precision(50);
mpfi_float f4(f3, 50);
BOOST_CHECK_EQUAL(f4.precision(), 50);
f4.assign(f1, f4.precision());
BOOST_CHECK_EQUAL(f4.precision(), 50);
}
{
//
// Check additional non-member functions,
// see https://github.com/boostorg/multiprecision/issues/91
//
mpfi_float::default_precision(100);
mpfi_float f1;
f1 = 3;
BOOST_CHECK_EQUAL(f1.precision(), 100);
mpfi_float::default_precision(20);
BOOST_CHECK_EQUAL(lower(f1).precision(), 100);
BOOST_CHECK_EQUAL(upper(f1).precision(), 100);
BOOST_CHECK_EQUAL(median(f1).precision(), 100);
BOOST_CHECK_EQUAL(width(f1).precision(), 100);
BOOST_CHECK_EQUAL(intersect(f1, f1).precision(), 100);
BOOST_CHECK_EQUAL(hull(f1, f1).precision(), 100);
BOOST_CHECK_EQUAL(asinh(f1).precision(), 100);
BOOST_CHECK_EQUAL(acosh(f1).precision(), 100);
BOOST_CHECK_EQUAL(atanh(f1).precision(), 100);
BOOST_CHECK_EQUAL(log1p(f1).precision(), 100);
BOOST_CHECK_EQUAL(expm1(f1).precision(), 100);
BOOST_CHECK_EQUAL(cbrt(f1).precision(), 100);
}
return boost::report_errors();
}
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