std::fdim

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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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fdim（C++11）
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（C++11）
（C++11）
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（C++11）
（C++11）
（C++11）
（C++11）
 
Defined in header <cmath>
float       fdim( float x, float y );
 (1) （C++11 起）
double      fdim( double x, double y );
 (2) （C++11 起）
long double fdim( long double x, long double y );
 (3) （C++11 起）
Promoted    fdim( Arithmetic x, Arithmetic y );
 (4) （C++11 起）
返回之间的正差x和y.
Original:
Returns the positive difference between x and y.
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这可以被实现为fmax (x - y, 0)，所以如果x ≤ y，结果是始终等于0，否则它是x - y.
Original:
This could be implemented as fmax (x - y, 0), so if x ≤ y, the result is always equals to 0, otherwise it is x - y.
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4)
如果任何参数是整数类型，它被转换为double。如果有另一种说法是long double，则返回类型是long double，否则它是double.
Original:
If any argument has integral type, it is cast to double. If any other argument is long double, then the return type is long double, otherwise it is double.
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[编辑] 参数

x, y -
浮点值
Original:
floating point value
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[编辑] 返回值

积极的差异价值
Original:
The positive difference value.
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[编辑] 另请参阅




（C++11）
计算的积分值（|x|）的绝对值
Original:
computes absolute value of an integral value (|x|)
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（函数） [edit]
（C++11）
较大的两个浮点值
Original:
larger of two floating point values
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（函数） [edit]
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