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C
C++
算法 | Algorithm
原子性操作 | Atomic operations
概念 | Concepts
容器 | Containers
动态内存管理 | Dynamic memory management
文件系统 | Filesystem
输入/输出 | Input/output
迭代器 | Iterator
关键词 | Keywords
语言 | Language
本土化 | Localizations
数字 | Numerics
beta
Common mathematical functions
Compile-time rational arithmetic
densities
densities
FE_ALL_EXCEPT
FE_DFL_ENV
FE_DIVBYZERO
FE_DOWNWARD
FE_INEXACT
FE_INVALID
FE_OVERFLOW
FE_TONEAREST
FE_TOWARDZERO
FE_UNDERFLOW
FE_UPWARD
Floating-point environment
FP_INFINITE
FP_NAN
FP_NORMAL
FP_SUBNORMAL
FP_ZERO
HUGE_VAL
HUGE_VALF
HUGE_VALL
INFINITY
Mathematical special functions
MATH_ERREXCEPT
math_errhandling
MATH_ERRNO
NAN
Numerics library
operators
operators
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)
operators (std::exponential_distribution)
operators (std::extreme_value_distribution)
operators (std::extreme_value_distribution)
operators (std::fisher_f_distribution)
operators (std::fisher_f_distribution)
operators (std::gamma_distribution)
operators (std::gamma_distribution)
operators (std::geometric_distribution)
operators (std::geometric_distribution)
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)
operators (std::student_t_distribution)
operators (std::student_t_distribution)
operators (std::subtract_with_carry_engine)
operators (std::subtract_with_carry_engine)
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
RAND_MAX
std::abs(float)
std::abs(int)
std::abs(std::complex)
std::abs(std::valarray)
std::acos
std::acos(std::complex)
std::acos(std::valarray)
std::acosh
std::acosh(std::complex)
std::arg(std::complex)
std::asin
std::asin(std::complex)
std::asin(std::valarray)
std::asinh
std::asinh(std::complex)
std::assoc_laguerre
std::assoc_laguerref
std::assoc_laguerrel
std::assoc_legendre
std::assoc_legendref
std::assoc_legendrel
std::atan
std::atan(std::complex)
std::atan(std::valarray)
std::atan2
std::atan2(std::valarray)
std::atanh
std::atanh(std::complex)
std::begin(std::valarray)
std::bernoulli_distribution
std::bernoulli_distribution::bernoulli_distribution
std::bernoulli_distribution::max
std::bernoulli_distribution::min
std::bernoulli_distribution::p
std::bernoulli_distribution::param
std::bernoulli_distribution::reset
std::beta
std::betaf
std::betal
std::binomial_distribution
std::binomial_distribution::binomial_distribution
std::binomial_distribution::max
std::binomial_distribution::min
std::binomial_distribution::p
std::binomial_distribution::param
std::binomial_distribution::reset
std::cauchy_distribution
std::cauchy_distribution::a
std::cauchy_distribution::cauchy_distribution
std::cauchy_distribution::max
std::cauchy_distribution::min
std::cauchy_distribution::param
std::cauchy_distribution::reset
std::cbrt
std::ceil
std::chi_squared_distribution
std::chi_squared_distribution::chi_squared_distribution
std::chi_squared_distribution::max
std::chi_squared_distribution::min
std::chi_squared_distribution::n
std::chi_squared_distribution::param
std::chi_squared_distribution::reset
std::complex
std::complex::complex
std::complex::imag
std::complex::operators
std::complex::operators (unary)
std::complex::real
std::comp_ellint_1
std::comp_ellint_1f
std::comp_ellint_1l
std::comp_ellint_2
std::comp_ellint_2f
std::comp_ellint_2l
std::comp_ellint_3
std::comp_ellint_3f
std::comp_ellint_3l
std::conj(std::complex)
std::copysign
std::cos
std::cos(std::complex)
std::cos(std::valarray)
std::cosh
std::cosh(std::complex)
std::cosh(std::valarray)
std::cyl_bessel_i
std::cyl_bessel_if
std::cyl_bessel_il
std::cyl_bessel_j
std::cyl_bessel_jf
std::cyl_bessel_jl
std::cyl_bessel_k
std::cyl_bessel_kf
std::cyl_bessel_kl
std::cyl_neumann
std::cyl_neumannf
std::cyl_neumannl
std::discard_block_engine
std::discard_block_engine::base
std::discard_block_engine::discard
std::discard_block_engine::discard_block_engine
std::discard_block_engine::max
std::discard_block_engine::min
std::discard_block_engine::seed
std::discrete_distribution
std::discrete_distribution::discrete_distribution
std::discrete_distribution::max
std::discrete_distribution::min
std::discrete_distribution::param
std::discrete_distribution::probabilities
std::discrete_distribution::reset
std::div
std::ellint_1
std::ellint_1f
std::ellint_1l
std::ellint_2
std::ellint_2f
std::ellint_2l
std::ellint_3
std::ellint_3f
std::ellint_3l
std::end(std::valarray)
std::erf
std::erfc
std::exp
std::exp(std::complex)
std::exp(std::valarray)
std::exp2
std::expint
std::expintf
std::expintl
std::expm1
std::exponential_distribution
std::exponential_distribution::exponential_distribution
std::exponential_distribution::lambda
std::exponential_distribution::max
std::exponential_distribution::min
std::exponential_distribution::param
std::exponential_distribution::reset
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
std::fegetexceptflag
std::fegetround
std::feholdexcept
std::feraiseexcept
std::fesetenv
std::fesetexceptflag
std::fesetround
std::fetestexcept
std::feupdateenv
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
std::gslice_array::operators
std::hermite
std::hermitef
std::hermitel
std::hypot
std::ilogb
std::imag(std::complex)
std::imaxabs
std::independent_bits_engine
std::independent_bits_engine::base
std::independent_bits_engine::discard
std::independent_bits_engine::independent_bits_engine
std::independent_bits_engine::max
std::independent_bits_engine::min
std::independent_bits_engine::seed
std::indirect_array
std::indirect_array::indirect_array
std::indirect_array::operators
std::isfinite
std::isgreater
std::isgreaterequal
std::isinf
std::isless
std::islessequal
std::islessgreater
std::isnan
std::isnormal
std::isunordered
std::labs
std::laguerre
std::laguerref
std::laguerrel
std::lcm
std::ldexp
std::ldiv
std::legendre
std::legendref
std::legendrel
std::lgamma
std::linear_congruential_engine
std::linear_congruential_engine::discard
std::linear_congruential_engine::linear_congruential_engine
std::linear_congruential_engine::max
std::linear_congruential_engine::min
std::linear_congruential_engine::seed
std::literals::complex_literals::operators
std::llabs
std::lldiv
std::llrint
std::llround
std::log
std::log(std::complex)
std::log(std::valarray)
std::log10
std::log10(std::complex)
std::log10(std::valarray)
std::log1p
std::log2
std::logb
std::lognormal_distribution
std::lognormal_distribution::lognormal_distribution
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
std::mask_array::mask_array
std::mask_array::operators
std::mersenne_twister_engine
std::mersenne_twister_engine::discard
std::mersenne_twister_engine::max
std::mersenne_twister_engine::mersenne_twister_engine
std::mersenne_twister_engine::min
std::mersenne_twister_engine::seed
std::modf
std::nan
std::nanf
std::nanl
std::nearbyint
std::negative_binomial_distribution
std::negative_binomial_distribution::max
std::negative_binomial_distribution::min
std::negative_binomial_distribution::negative_binomial_distribution
std::negative_binomial_distribution::p
std::negative_binomial_distribution::param
std::negative_binomial_distribution::reset
std::nextafter
std::nexttoward
std::norm(std::complex)
std::normal_distribution
std::normal_distribution::max
std::normal_distribution::mean
std::normal_distribution::min
std::normal_distribution::normal_distribution
std::normal_distribution::param
std::normal_distribution::reset
std::piecewise_constant_distribution
std::piecewise_constant_distribution::intervals
std::piecewise_constant_distribution::max
std::piecewise_constant_distribution::min
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
std::piecewise_linear_distribution::max
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
std::poisson_distribution::mean
std::poisson_distribution::min
std::poisson_distribution::param
std::poisson_distribution::poisson_distribution
std::poisson_distribution::reset
std::polar(std::complex)
std::pow
std::pow(std::complex)
std::pow(std::valarray)
std::proj(std::complex)
std::rand
std::random_device
std::random_device::entropy
std::random_device::max
std::random_device::min
std::random_device::random_device
std::ratio
std::ratio_add
std::ratio_divide
std::ratio_equal
std::ratio_greater
std::ratio_greater_equal
std::ratio_less
std::ratio_less_equal
std::ratio_multiply
std::ratio_not_equal
std::ratio_subtract
std::real(std::complex)
std::remainder
std::remquo
std::riemann_zeta
std::riemann_zetaf
std::riemann_zetal
std::rint
std::round
std::scalbln
std::scalbn
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
std::sph_besself
std::sph_bessell
std::sph_legendre
std::sph_legendref
std::sph_legendrel
std::sph_neumann
std::sph_neumannf
std::sph_neumannl
std::sqrt
std::sqrt(std::complex)
std::sqrt(std::valarray)
std::srand
std::student_t_distribution
std::student_t_distribution::max
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
std::subtract_with_carry_engine::discard
std::subtract_with_carry_engine::max
std::subtract_with_carry_engine::min
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::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[]
std::valarray::resize
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
stddev
规律表达 | Regular expressions
标准库头文件 | Standard library header files
字符串 | Strings
线程支持 | Thread support
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std::uniform_real_distribution::a

STD：制服[医]实[医]分布：a，b

result_type a() const;(1)(since C++11)
result_type b() const;(2)(since C++11)

返回已使用该分布构造的参数。

1%29返回阿分布参数。它定义了最小可能生成的值。默认值是0.0...

2%29返回乙分布参数。它定义了最大可能生成的值。默认值是1.0

参数

%280%29

返回值

1%29阿分布参数

2%29乙分布参数

另见

paramgets or sets the distribution parameter object (public member function)

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