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densities
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operators (std::cauchy_distribution)
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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)
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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)
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operators (std::weibull_distribution)
Pseudo-random number generation
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std::atan2
std::atan2(std::valarray)
std::atanh
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std::begin(std::valarray)
std::bernoulli_distribution
std::bernoulli_distribution::bernoulli_distribution
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std::discrete_distribution
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std::exp2
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std::exponential_distribution
std::exponential_distribution::exponential_distribution
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std::extreme_value_distribution
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std::fabs
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std::gcd
std::generate_canonical
std::geometric_distribution
std::geometric_distribution::geometric_distribution
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std::geometric_distribution::p
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std::gslice
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std::imag(std::complex)
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std::independent_bits_engine::max
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std::piecewise_linear_distribution::piecewise_linear_distribution
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std::poisson_distribution
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std::polar(std::complex)
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std::pow(std::valarray)
std::proj(std::complex)
std::rand
std::random_device
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std::seed_seq::size
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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
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std::sin(std::complex)
std::sin(std::valarray)
std::sinh
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std::sinh(std::valarray)
std::slice
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std::slice_array::operators
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std::sph_bessel
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std::sph_bessell
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std::sqrt(std::valarray)
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std::student_t_distribution::reset
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std::subtract_with_carry_engine
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std::subtract_with_carry_engine::subtract_with_carry_engine
std::swap(std::valarray)
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std::tgamma
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std::uniform_int_distribution
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std::uniform_int_distribution::max
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std::uniform_int_distribution::uniform_int_distribution
std::uniform_real_distribution
std::uniform_real_distribution::a
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std::uniform_real_distribution::reset
std::uniform_real_distribution::uniform_real_distribution
std::valarray
std::valarray::apply
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std::valarray::operators
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std::valarray::operator[]
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std::weibull_distribution
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std::weibull_distribution::param
std::weibull_distribution::reset
std::weibull_distribution::weibull_distribution
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std::islessequal

STD：岛后遗症

Defined in header ​​
bool islessequal( float x, float y (1)(since C++11)
bool islessequal( double x, double y (2)(since C++11)
bool islessequal( long double x, long double y (3)(since C++11)
bool islessequal( Arithmetic x, Arithmetic y (4)(since C++11)

1-3%29确定浮点数x小于或等于浮点数。y，而不设置浮点异常。

4%29一组重载或函数模板，用于%281-3%29中未涵盖的所有算术类型参数组合。如果有任何争论积分型，它被铸造成double...

参数

x-floating point value
y-floating point value

返回值

true如果x <= y，，，false否则。

注记

内建operator<=对于浮点数可能会引发FE_INVALID如果其中一个或两个论点都是NaN。这个函数是一个“安静”的版本。operator<=...

另见

less_equalfunction object implementing x <= y (class template)
isgreaterequal (C++11)checks if the first floating-point argument is greater or equal than the second (function)

C岛文件

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