double complex ctan(double complex z);
float complex ctanf(float complex z);
long double complex ctanl(long double complex z);
Link with -lm.
The complex tangent function is defined as:
ctan(z) = csin(z) / ccos(z)
These functions first appeared in glibc in version 2.1.
cabs(3), catan(3), ccos(3), csin(3), complex(7)
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