clog10, clog10f, clog10l
Retrieves the logarithm (base 10) of a complex number.
Syntax
_Dcomplex clog10( _Dcomplex z );
_Fcomplex clog10f( _Fcomplex z );
_Lcomplex clog10l( _Lcomplex z );
_Fcomplex clog10( _Fcomplex z ); // C++ only
_Lcomplex clog10( _Lcomplex z ); // C++ only
Parameters
z
The base of the logarithm.
Return value
The possible return values are:
z parameter |
Return value |
|---|---|
| Positive | The logarithm (base 10) of z |
| Zero | - INF |
| Negative | NaN |
| NaN | NaN |
| + INF | + INF |
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, clog10l |
<complex.h> | <ccomplex> |
For more compatibility information, see Compatibility.
See also
Alphabetical function reference
cexp, cexpf, cexpl
cpow, cpowf, cpowl
clog, clogf, clogl