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// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2011-2018 Gael Guennebaud <gael.guennebaud@inria.fr>
//
// This Source Code Form is subject to the terms of the Mozilla
// Public License v. 2.0. If a copy of the MPL was not distributed
// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
#ifndef EIGEN_TEST_ANNOYING_SCALAR_H
#define EIGEN_TEST_ANNOYING_SCALAR_H
#include <ostream>
#if EIGEN_COMP_GNUC
#pragma GCC diagnostic ignored "-Wshadow"
#endif
#ifndef EIGEN_TEST_ANNOYING_SCALAR_DONT_THROW
struct my_exception
{
my_exception() {}
~my_exception() {}
};
#endif
// An AnnoyingScalar is a pseudo scalar type that:
// - can randomly through an exception in operator +
// - randomly allocate on the heap or initialize a reference to itself making it non trivially copyable, nor movable, nor relocatable.
class AnnoyingScalar
{
public:
AnnoyingScalar() { init(); *v = 0; }
AnnoyingScalar(long double _v) { init(); *v = _v; }
AnnoyingScalar(double _v) { init(); *v = _v; }
AnnoyingScalar(float _v) { init(); *v = _v; }
AnnoyingScalar(int _v) { init(); *v = _v; }
AnnoyingScalar(long _v) { init(); *v = _v; }
#if EIGEN_HAS_CXX11
AnnoyingScalar(long long _v) { init(); *v = _v; }
#endif
AnnoyingScalar(const AnnoyingScalar& other) { init(); *v = *(other.v); }
~AnnoyingScalar() {
if(v!=&data)
delete v;
instances--;
}
void init() {
if(internal::random<bool>())
v = new float;
else
v = &data;
instances++;
}
AnnoyingScalar operator+(const AnnoyingScalar& other) const
{
#ifndef EIGEN_TEST_ANNOYING_SCALAR_DONT_THROW
countdown--;
if(countdown<=0 && !dont_throw)
throw my_exception();
#endif
return AnnoyingScalar(*v+*other.v);
}
AnnoyingScalar operator-() const
{ return AnnoyingScalar(-*v); }
AnnoyingScalar operator-(const AnnoyingScalar& other) const
{ return AnnoyingScalar(*v-*other.v); }
AnnoyingScalar operator*(const AnnoyingScalar& other) const
{ return AnnoyingScalar((*v)*(*other.v)); }
AnnoyingScalar operator/(const AnnoyingScalar& other) const
{ return AnnoyingScalar((*v)/(*other.v)); }
AnnoyingScalar& operator+=(const AnnoyingScalar& other) { *v += *other.v; return *this; }
AnnoyingScalar& operator-=(const AnnoyingScalar& other) { *v -= *other.v; return *this; }
AnnoyingScalar& operator*=(const AnnoyingScalar& other) { *v *= *other.v; return *this; }
AnnoyingScalar& operator/=(const AnnoyingScalar& other) { *v /= *other.v; return *this; }
AnnoyingScalar& operator= (const AnnoyingScalar& other) { *v = *other.v; return *this; }
bool operator==(const AnnoyingScalar& other) const { return *v == *other.v; }
bool operator!=(const AnnoyingScalar& other) const { return *v != *other.v; }
bool operator<=(const AnnoyingScalar& other) const { return *v <= *other.v; }
bool operator< (const AnnoyingScalar& other) const { return *v < *other.v; }
bool operator>=(const AnnoyingScalar& other) const { return *v >= *other.v; }
bool operator> (const AnnoyingScalar& other) const { return *v > *other.v; }
float* v;
float data;
static int instances;
#ifndef EIGEN_TEST_ANNOYING_SCALAR_DONT_THROW
static int countdown;
static bool dont_throw;
#endif
};
AnnoyingScalar real(const AnnoyingScalar &x) { return x; }
AnnoyingScalar imag(const AnnoyingScalar & ) { return 0; }
AnnoyingScalar conj(const AnnoyingScalar &x) { return x; }
AnnoyingScalar sqrt(const AnnoyingScalar &x) { return std::sqrt(*x.v); }
AnnoyingScalar abs (const AnnoyingScalar &x) { return std::abs(*x.v); }
AnnoyingScalar cos (const AnnoyingScalar &x) { return std::cos(*x.v); }
AnnoyingScalar sin (const AnnoyingScalar &x) { return std::sin(*x.v); }
AnnoyingScalar acos(const AnnoyingScalar &x) { return std::acos(*x.v); }
AnnoyingScalar atan2(const AnnoyingScalar &y,const AnnoyingScalar &x) { return std::atan2(*y.v,*x.v); }
std::ostream& operator<<(std::ostream& stream,const AnnoyingScalar& x) {
stream << (*(x.v));
return stream;
}
int AnnoyingScalar::instances = 0;
#ifndef EIGEN_TEST_ANNOYING_SCALAR_DONT_THROW
int AnnoyingScalar::countdown = 0;
bool AnnoyingScalar::dont_throw = false;
#endif
namespace Eigen {
template<>
struct NumTraits<AnnoyingScalar> : NumTraits<float>
{
enum {
RequireInitialization = true
};
typedef AnnoyingScalar Real;
typedef AnnoyingScalar Nested;
typedef AnnoyingScalar Literal;
typedef AnnoyingScalar NonInteger;
};
template<> inline AnnoyingScalar test_precision<AnnoyingScalar>() { return test_precision<float>(); }
namespace numext {
template<>
EIGEN_DEVICE_FUNC EIGEN_ALWAYS_INLINE
bool (isfinite)(const AnnoyingScalar& x) {
return (numext::isfinite)(*x.v);
}
}
namespace internal {
template<> EIGEN_STRONG_INLINE AnnoyingScalar pcmp_eq(const AnnoyingScalar& a, const AnnoyingScalar& b)
{ return AnnoyingScalar(pcmp_eq(*a.v, *b.v)); }
template<> EIGEN_STRONG_INLINE AnnoyingScalar pselect(const AnnoyingScalar& mask, const AnnoyingScalar& a, const AnnoyingScalar& b)
{ return numext::equal_strict(*mask.v, 0.f) ? b : a; }
template<> EIGEN_STRONG_INLINE double cast(const AnnoyingScalar& x) { return double(*x.v); }
template<> EIGEN_STRONG_INLINE float cast(const AnnoyingScalar& x) { return *x.v; }
}
} // namespace Eigen
AnnoyingScalar get_test_precision(const AnnoyingScalar&)
{ return Eigen::test_precision<AnnoyingScalar>(); }
AnnoyingScalar test_relative_error(const AnnoyingScalar &a, const AnnoyingScalar &b)
{ return test_relative_error(*a.v, *b.v); }
inline bool test_isApprox(const AnnoyingScalar &a, const AnnoyingScalar &b)
{ return internal::isApprox(*a.v, *b.v, test_precision<float>()); }
inline bool test_isMuchSmallerThan(const AnnoyingScalar &a, const AnnoyingScalar &b)
{ return test_isMuchSmallerThan(*a.v, *b.v); }
#endif // EIGEN_TEST_ANNOYING_SCALAR_H
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