casin, casinf, casinl

Article
06/05/2017

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Retrieves the arcsine of a complex number, with branch cuts outside the interval [−1, +1] along the real axis.

Syntax

_Dcomplex casin(   
   _Dcomplex z   
);  
_Fcomplex casin(   
   _Fcomplex z   
);  // C++ only  
_Lcomplex casin(   
   _Lcomplex z   
);  // C++ only  
_Fcomplex casinf(   
   _Fcomplex z   
);  
_Lcomplex casinl(   
   _Lcomplex z   
);

Parameters

z
A complex number that represents an angle, in radians.

Return Value

The arcsine of z, in radians. The result is unbounded along the imaginary axis, and in the interval [−π/2, +π/2] along the real axis.

Remarks

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

Requirements

Routine	C header	C++ header
`casin`, `casinf`, `casinl`	<complex.h>	<ccomplex>

For more compatibility information, see Compatibility in the Introduction.

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