std::trunc

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C++
 
Numerics的图书馆
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编译时合理的算法 （C++11）
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Nearest integer floating point operations
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（C++11）
（C++11）
trunc（C++11）
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（C++11）
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（C++11）
（C++11）
（C++11）
（C++11）
 
Defined in header <cmath>
float       trunc( float arg );
 （C++11 起）
double      trunc( double arg );
 （C++11 起）
long double trunc( long double arg );
 （C++11 起）
double      trunc( Integral arg );
 （C++11 起）
计算最接近的整数强度更大的arg
Original:
Computes nearest integer not greater in magnitude than arg.
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目录

[编辑] 参数

arg -
浮点值
Original:
floating point value
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[编辑] 返回值

最接近的整数强度更大的arg
Original:
Nearest integer not greater in magnitude than arg.
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[[Image:
返回值
Original:
{{{2}}}
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|200x200px]]
Argument

[编辑] 注释

整数值可以始终代表给定的浮点类型.
Original:
The integer value can be always represented by the given floating point type.
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[编辑] 另请参阅
最接近的整数不大于给定值
Original:
nearest integer not greater than the given value
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（函数） [edit]
最接近的整数不小于给定的值
Original:
nearest integer not less than the given value
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（函数） [edit]
（C++11）
（C++11）
（C++11）
最接近的整数，四舍五入的距离零中途情况下
Original:
nearest integer, rounding away from zero in halfway cases
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（函数） [edit]
来自“http://zh.cppreference.com/mwiki/index.php?title=cpp/numeric/math/trunc&oldid=28845”