std::isnan 定义于头文件<cmath> boolisnan(floatarg); (1)(C++11 起) boolisnan(doublearg); (2)(C++11 起) boolisnan(longdoublearg); (3)(C++11 起) boolisnan(IntegralType arg); (4)(C++11 起) 1-3)确定给定的浮点数arg是否为非数( NaN )
AI代码解释 #include<iostream>#include<cmath>#include<cfloat>intmain(){std::cout<<std::boolalpha<<"isnan(NaN) = "<<std::isnan(NAN)<<'\n'<<"isnan(Inf) = "<<std::isnan(INFINITY)<<'\n'<<"isnan(0.0) = "<<std::isnan(0.0)<<'\n'<<"isnan(DBL_MIN/2.0) = "<<std::is...
@文心快码BaiduComatestd::isnan函数头文件 文心快码BaiduComatestd::isnan函数是C++标准库中的一个函数,用于检测给定的浮点数是否为NaN(Not-A-Number,非数字)。在C++中,这个函数定义在<cmath>头文件中。 以下是对问题的详细回答: std::isnan函数的作用: std::isnan函数用于检测给定的浮点数是否为...
(INFINITY) << '\n' << "isnan(0.0) = " << std::isnan(0.0) << '\n' << "isnan(DBL_MIN/2.0) = " << std::isnan(DBL_MIN / 2.0) << '\n' << "isnan(0.0 / 0.0) = " << std::isnan(0.0 / 0.0) << '\n' << "isnan(Inf - Inf) = " << std::isnan(INFINITY...
问了解std::isnan的编译结果EN如果isNaN函数的参数不是Number类型， isNaN函数会首先尝试将这个参数转换...
(Inf) = "<< std::isnan(INFINITY) <<'\n'<<"isnan(0.0) = "<< std::isnan(0.0) <<'\n'<<"isnan(DBL_MIN/2.0) = "<< std::isnan(DBL_MIN/2.0) <<'\n'<<"isnan(0.0 / 0.0) = "<< std::isnan(0.0/0.0) <<'\n'<<"isnan(Inf - Inf) = "<< std::isnan(INFINITY -...
<< "isnan(0.0 / 0.0) = " << std::isnan(0.0/0.0) << '\n' << "isnan(Inf - Inf) = " << std::isnan(INFINITY - INFINITY) << '\n'; } Output: isnan(NaN) = true isnan(Inf) = false isnan(0.0) = false isnan(DBL_MIN/2.0) = false ...
(Inf) = "<<std::isnan(INFINITY)<<'\n'<<"isnan(0.0) = "<<std::isnan(0.0)<<'\n'<<"isnan(DBL_MIN/2.0) = "<<std::isnan(DBL_MIN/2.0)<<'\n'<<"isnan(0.0 / 0.0) = "<<std::isnan(0.0/0.0)<<'\n'<<"isnan(Inf - Inf) = "<<std::isnan(INFINITY-INFINITY)<<'\...
问咖啡馆安装: gcc错误命名空间"std“没有成员"isnan”ENvs低版本转高版本，std::getline报错，如下 ...
int cols_no_nans = 0; std::vector<int> no_nan_indices; for (int icol = 0; icol < diffuses.cols(); ++icol) { if (!isnan(diffuses(0, icol))) { if (!std::isnan(diffuses(0, icol))) { ++cols_no_nans; no_nan_indices.push_back(icol); } 0 comments on commit ad229fb...