clog10, clog10f, clog10l

项目
12/18/2017

The latest version of this topic can be found at clog10, clog10f, clog10l.

Retrieves the base 10 logarithm of a complex number.

Syntax

_Dcomplex clog10(   
   _Dcomplex z   
);  
_Fcomplex clog10(   
  _Fcomplex z   
);  // C++ only  
_Lcomplex clog10(   
   _Lcomplex z   
);  // C++ only  
_Fcomplex clog10f(   
   _Fcomplex z   
);  
_Lcomplex clog10l(   
   _Lcomplex z   
);

Parameters

z
The base of the logarithm.

Return Value

The possible return values are:

z parameter	Return value
Positive	The base 10 logarithm of z
Zero	- ∞
Negative	NaN
NaN	NaN
+ ∞	+ ∞

Remarks

Because C++ allows overloading, you can call overloads of clog10 that take and return _Fcomplex and _Lcomplex values. In a C program, clog10 always takes and returns a _Dcomplex value.

Requirements

Routine	C header	C++ header
`clog10`, `clog10f`, `clogl`	<complex.h>	<ccomplex>

For more compatibility information, see Compatibility in the Introduction.

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