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beta
Common mathematical functions
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densities
FE_ALL_EXCEPT
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Floating-point environment
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Mathematical special functions
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Numerics library
operators
operators
operators (std::bernoulli_distribution)
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operators (std::binomial_distribution)
operators (std::binomial_distribution)
operators (std::cauchy_distribution)
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operators (std::chi_squared_distribution)
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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::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)
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std::abs(std::complex)
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std::acos
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std::acosh
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std::asinh
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std::assoc_laguerre
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std::atan
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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
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std::binomial_distribution::binomial_distribution
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std::cauchy_distribution
std::cauchy_distribution::a
std::cauchy_distribution::cauchy_distribution
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std::cbrt
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std::chi_squared_distribution
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std::complex
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std::complex::imag
std::complex::operators
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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
std::discard_block_engine::base
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std::discard_block_engine::discard_block_engine
std::discard_block_engine::max
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std::discard_block_engine::seed
std::discrete_distribution
std::discrete_distribution::discrete_distribution
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std::discrete_distribution::param
std::discrete_distribution::probabilities
std::discrete_distribution::reset
std::div
std::ellint_1
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std::exp
std::exp(std::complex)
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std::exp2
std::expint
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std::exponential_distribution
std::exponential_distribution::exponential_distribution
std::exponential_distribution::lambda
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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
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std::extreme_value_distribution::param
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std::fabs
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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
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std::fisher_f_distribution::param
std::fisher_f_distribution::reset
std::floor
std::fma
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std::fpclassify
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std::gamma_distribution
std::gamma_distribution::alpha
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std::gamma_distribution::reset
std::gcd
std::generate_canonical
std::geometric_distribution
std::geometric_distribution::geometric_distribution
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std::gslice
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std::hypot
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std::indirect_array
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std::poisson_distribution::poisson_distribution
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std::polar(std::complex)
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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::remainder
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std::riemann_zeta
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std::riemann_zetal
std::rint
std::round
std::scalbln
std::scalbn
std::seed_seq
std::seed_seq::generate
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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
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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
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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
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::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[]
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
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INFINITY

无穷大

Defined in header ​​
#define INFINITY /*implementation defined*/​(since C++11)

如果实现支持浮点无穷大，则宏INFINITY扩展为类型的常量表达式。float它的计算值为正或无符号无穷大。

如果实现不支持浮点无穷大，则宏INFINITY展开为一个确保使float在编译时，使用此宏将生成编译器警告。

另见

isinf (C++11)checks if the given number is infinite (function)
HUGE_VALFHUGE_VALHUGE_VALL (C++11)(C++11)indicates the overflow value for float, double and long double respectively (macro constant)
has_infinity staticidentifies floating-point types that can represent the special value "positive infinity" (public static member constant of std::numeric_limits)
infinity staticreturns the positive infinity value of the given floating-point type (public static member function of std::numeric_limits)

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