本文整理汇总了C++中cpp_int_backend::sign方法的典型用法代码示例。如果您正苦于以下问题：C++ cpp_int_backend::sign方法的具体用法？C++ cpp_int_backend::sign怎么用？C++ cpp_int_backend::sign使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类cpp_int_backend的用法示例。
在下文中一共展示了cpp_int_backend::sign方法的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: is_valid_bitwise_op
void is_valid_bitwise_op(
cpp_int_backend<MinBits1, MaxBits1, SignType1, Checked1, Allocator1>& result,
const cpp_int_backend<MinBits2, MaxBits2, SignType2, Checked2, Allocator2>& o, const mpl::int_<checked>&)
{
if(result.sign() || o.sign())
BOOST_THROW_EXCEPTION(std::range_error("Bitwise operations on negative values results in undefined behavior."));
}示例2:
BOOST_MP_FORCEINLINE typename enable_if_c<!is_trivial_cpp_int<cpp_int_backend<MinBits1, MaxBits1, SignType1, Checked1, Allocator1> >::value && !is_trivial_cpp_int<cpp_int_backend<MinBits2, MaxBits2, SignType2, Checked2, Allocator2> >::value >::type
eval_modulus(
cpp_int_backend<MinBits1, MaxBits1, SignType1, Checked1, Allocator1>& result,
const cpp_int_backend<MinBits2, MaxBits2, SignType2, Checked2, Allocator2>& a, limb_type b)
{
bool s = a.sign();
divide_unsigned_helper(static_cast<cpp_int_backend<MinBits1, MaxBits1, SignType1, Checked1, Allocator1>* >(0), a, b, result);
result.sign(s);
}示例3: while
inline typename enable_if_c<!is_trivial_cpp_int<cpp_int_backend<MinBits1, MaxBits1, SignType1, Checked1, Allocator1> >::value, unsigned>::type
eval_lsb(const cpp_int_backend<MinBits1, MaxBits1, SignType1, Checked1, Allocator1>& a)
{
using default_ops::eval_get_sign;
if(eval_get_sign(a) == 0)
{
BOOST_THROW_EXCEPTION(std::range_error("No bits were set in the operand."));
}
if(a.sign())
{
BOOST_THROW_EXCEPTION(std::range_error("Testing individual bits in negative values is not supported - results are undefined."));
}
//
// Find the index of the least significant limb that is non-zero:
//
unsigned index = 0;
while(!a.limbs()[index] && (index < a.size()))
++index;
//
// Find the index of the least significant bit within that limb:
//
unsigned result = boost::multiprecision::detail::find_lsb(a.limbs()[index]);
return result + index * cpp_int_backend<MinBits1, MaxBits1, SignType1, Checked1, Allocator1>::limb_bits;
}示例4: eval_msb_imp
inline typename enable_if_c<is_trivial_cpp_int<cpp_int_backend<MinBits1, MaxBits1, SignType1, Checked1, Allocator1> >::value, unsigned>::type
eval_msb(const cpp_int_backend<MinBits1, MaxBits1, SignType1, Checked1, Allocator1>& a)
{
using default_ops::eval_get_sign;
if(eval_get_sign(a) == 0)
{
BOOST_THROW_EXCEPTION(std::range_error("No bits were set in the operand."));
}
if(a.sign())
{
BOOST_THROW_EXCEPTION(std::range_error("Testing individual bits in negative values is not supported - results are undefined."));
}
return eval_msb_imp(a);
}示例5:
inline typename enable_if_c<is_trivial_cpp_int<cpp_int_backend<MinBits1, MaxBits1, SignType1, Checked1, Allocator1> >::value, unsigned>::type
eval_msb(const cpp_int_backend<MinBits1, MaxBits1, SignType1, Checked1, Allocator1>& a)
{
using default_ops::eval_get_sign;
if(eval_get_sign(a) == 0)
{
BOOST_THROW_EXCEPTION(std::range_error("No bits were set in the operand."));
}
if(a.sign())
{
BOOST_THROW_EXCEPTION(std::range_error("Testing individual bits in negative values is not supported - results are undefined."));
}
//
// Find the index of the least significant bit within that limb:
//
return boost::multiprecision::detail::find_msb(*a.limbs());
}