ctan

ctanf, ctan, ctanl

Defined in header <complex.h>
float complex       ctanf( float complex z );
(1) (since C99)
double complex      ctan( double complex z );
(2) (since C99)
long double complex ctanl( long double complex z );
(3) (since C99)
Defined in header <tgmath.h>
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