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Linux Programmer's Manual (3)
ctan, ctanf, ctanl - complex tangent function
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.
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Time: 21:42:59 GMT, July 12, 2014