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918717bfcc42233dfdb83493002ea4ca187bde93 blob 174 bytes (raw)
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#include "complex_impl.h"

/* tan(z) = -i tanh(i z) */

double complex ctan(double complex z)
{
	z = ctanh(CMPLX(-cimag(z), creal(z)));
	return CMPLX(cimag(z), -creal(z));
}

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