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densities
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Numerics library
operators
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operators (std::bernoulli_distribution)
operators (std::bernoulli_distribution)
operators (std::binomial_distribution)
operators (std::binomial_distribution)
operators (std::cauchy_distribution)
operators (std::cauchy_distribution)
operators (std::chi_squared_distribution)
operators (std::chi_squared_distribution)
operators (std::complex)
operators (std::complex)
operators (std::discard_block_engine)
operators (std::discard_block_engine)
operators (std::discrete_distribution)
operators (std::discrete_distribution)
operators (std::exponential_distribution)
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operators (std::fisher_f_distribution)
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operators (std::gamma_distribution)
operators (std::gamma_distribution)
operators (std::geometric_distribution)
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operators (std::independent_bits_engine)
operators (std::independent_bits_engine)
operators (std::linear_congruential_engine)
operators (std::linear_congruential_engine)
operators (std::lognormal_distribution)
operators (std::lognormal_distribution)
operators (std::mersenne_twister_engine)
operators (std::mersenne_twister_engine)
operators (std::negative_binomial_distribution)
operators (std::negative_binomial_distribution)
operators (std::normal_distribution)
operators (std::normal_distribution)
operators (std::piecewise_constant_distribution)
operators (std::piecewise_constant_distribution)
operators (std::piecewise_linear_distribution)
operators (std::piecewise_linear_distribution)
operators (std::poisson_distribution)
operators (std::poisson_distribution)
operators (std::shuffle_order_engine)
operators (std::shuffle_order_engine)
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operators (std::uniform_int_distribution)
operators (std::uniform_int_distribution)
operators (std::uniform_real_distribution)
operators (std::uniform_real_distribution)
operators (std::valarray)
operators (std::weibull_distribution)
operators (std::weibull_distribution)
Pseudo-random number generation
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std::atan2
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std::atanh
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std::begin(std::valarray)
std::bernoulli_distribution
std::bernoulli_distribution::bernoulli_distribution
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std::copysign
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std::cos(std::valarray)
std::cosh
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std::cyl_bessel_i
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std::cyl_neumann
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std::discard_block_engine
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std::discard_block_engine::seed
std::discrete_distribution
std::discrete_distribution::discrete_distribution
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std::discrete_distribution::reset
std::div
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std::end(std::valarray)
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std::exp
std::exp(std::complex)
std::exp(std::valarray)
std::exp2
std::expint
std::expintf
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std::exponential_distribution
std::exponential_distribution::exponential_distribution
std::exponential_distribution::lambda
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std::exponential_distribution::param
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std::extreme_value_distribution
std::extreme_value_distribution::a
std::extreme_value_distribution::extreme_value_distribution
std::extreme_value_distribution::max
std::extreme_value_distribution::min
std::extreme_value_distribution::param
std::extreme_value_distribution::reset
std::fabs
std::fdim
std::feclearexcept
std::fegetenv
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std::feraiseexcept
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std::fisher_f_distribution
std::fisher_f_distribution::fisher_f_distribution
std::fisher_f_distribution::m
std::fisher_f_distribution::max
std::fisher_f_distribution::min
std::fisher_f_distribution::param
std::fisher_f_distribution::reset
std::floor
std::fma
std::fmax
std::fmin
std::fmod
std::fpclassify
std::frexp
std::gamma_distribution
std::gamma_distribution::alpha
std::gamma_distribution::gamma_distribution
std::gamma_distribution::max
std::gamma_distribution::min
std::gamma_distribution::param
std::gamma_distribution::reset
std::gcd
std::generate_canonical
std::geometric_distribution
std::geometric_distribution::geometric_distribution
std::geometric_distribution::max
std::geometric_distribution::min
std::geometric_distribution::p
std::geometric_distribution::param
std::geometric_distribution::reset
std::gslice
std::gslice_array
std::gslice_array::gslice_array
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std::hermite
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std::hypot
std::ilogb
std::imag(std::complex)
std::imaxabs
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std::independent_bits_engine::base
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std::independent_bits_engine::max
std::independent_bits_engine::min
std::independent_bits_engine::seed
std::indirect_array
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std::isfinite
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std::linear_congruential_engine::min
std::linear_congruential_engine::seed
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std::lognormal_distribution
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std::lognormal_distribution::m
std::lognormal_distribution::max
std::lognormal_distribution::min
std::lognormal_distribution::param
std::lognormal_distribution::reset
std::lrint
std::lround
std::mask_array
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std::mersenne_twister_engine
std::mersenne_twister_engine::discard
std::mersenne_twister_engine::max
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std::nextafter
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std::norm(std::complex)
std::normal_distribution
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std::normal_distribution::normal_distribution
std::normal_distribution::param
std::normal_distribution::reset
std::piecewise_constant_distribution
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std::piecewise_constant_distribution::param
std::piecewise_constant_distribution::piecewise_constant_distribution
std::piecewise_constant_distribution::reset
std::piecewise_linear_distribution
std::piecewise_linear_distribution::intervals
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std::piecewise_linear_distribution::min
std::piecewise_linear_distribution::param
std::piecewise_linear_distribution::piecewise_linear_distribution
std::piecewise_linear_distribution::reset
std::poisson_distribution
std::poisson_distribution::max
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std::poisson_distribution::min
std::poisson_distribution::param
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std::polar(std::complex)
std::pow
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std::pow(std::valarray)
std::proj(std::complex)
std::rand
std::random_device
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std::random_device::random_device
std::ratio
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std::ratio_greater
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std::real(std::complex)
std::remainder
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std::riemann_zeta
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std::riemann_zetal
std::rint
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std::scalbln
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std::seed_seq
std::seed_seq::generate
std::seed_seq::param
std::seed_seq::seed_seq
std::seed_seq::size
std::shuffle_order_engine
std::shuffle_order_engine::base
std::shuffle_order_engine::discard
std::shuffle_order_engine::max
std::shuffle_order_engine::min
std::shuffle_order_engine::seed
std::shuffle_order_engine::shuffle_order_engine
std::signbit
std::sin
std::sin(std::complex)
std::sin(std::valarray)
std::sinh
std::sinh(std::complex)
std::sinh(std::valarray)
std::slice
std::slice_array
std::slice_array::operators
std::slice_array::slice_array
std::sph_bessel
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std::sph_bessell
std::sph_legendre
std::sph_legendref
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std::sph_neumann
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std::sph_neumannl
std::sqrt
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std::sqrt(std::valarray)
std::srand
std::student_t_distribution
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std::student_t_distribution::min
std::student_t_distribution::n
std::student_t_distribution::param
std::student_t_distribution::reset
std::student_t_distribution::student_t_distribution
std::subtract_with_carry_engine
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std::subtract_with_carry_engine::max
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std::subtract_with_carry_engine::seed
std::subtract_with_carry_engine::subtract_with_carry_engine
std::swap(std::valarray)
std::tan
std::tan(std::complex)
std::tan(std::valarray)
std::tanh
std::tanh(std::complex)
std::tanh(std::valarray)
std::tgamma
std::trunc
std::uniform_int_distribution
std::uniform_int_distribution::a
std::uniform_int_distribution::max
std::uniform_int_distribution::min
std::uniform_int_distribution::param
std::uniform_int_distribution::reset
std::uniform_int_distribution::uniform_int_distribution
std::uniform_real_distribution
std::uniform_real_distribution::a
std::uniform_real_distribution::max
std::uniform_real_distribution::min
std::uniform_real_distribution::param
std::uniform_real_distribution::reset
std::uniform_real_distribution::uniform_real_distribution
std::valarray
std::valarray::apply
std::valarray::cshift
std::valarray::max
std::valarray::min
std::valarray::operators
std::valarray::operators
std::valarray::operator[]
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std::valarray::shift
std::valarray::size
std::valarray::sum
std::valarray::swap
std::valarray::valarray
std::weibull_distribution
std::weibull_distribution::a
std::weibull_distribution::max
std::weibull_distribution::min
std::weibull_distribution::param
std::weibull_distribution::reset
std::weibull_distribution::weibull_distribution
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std::complex::real

STD：：复杂：：真实

primary template complex​​
T real() const;(1)(until C++14)
constexpr T real() const;(1)(since C++14)
void real( T value (2)​
specialization complex<float>​​
float real() const;(1)(until C++11)
constexpr float real((1)(since C++11) (until C++14)
constexpr float real() const;(1)(since C++14)
void real( float value (2)​
specialization complex<double>​​
double real() const;(1)(until C++11)
constexpr double real((1)(since C++11) (until C++14)
constexpr double real() const;(1)(since C++14)
void real( double value (2)​
specialization complex<long double>​​
long double real() const;(1)(until C++11)
constexpr long double real((1)(since C++11) (until C++14)
constexpr long double real() const;(1)(since C++14)
void real( long double value (2)​

访问复数的真实部分。

1%29返回真实的部分。

2%29设置真正的部分value...

参数

value-the value to set the real part to

返回值

1%29是真正的部分。

2%29%280%29

另见

realreturns the real component (function template)
imagaccesses the imaginary part of the complex number (public member function)

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