1CATANH(3) complex math routines CATANH(3)
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6 catanh, catanhf, catanhl - complex arc tangents hyperbolic
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9 #include <complex.h>
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11 double complex catanh(double complex z);
12 float complex catanhf(float complex z);
13 long double complex catanhl(long double complex z);
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15 Link with -lm.
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18 The catanh() function calculates the complex atanh(). If y =
19 catanh(z), then z = ctanh(y). The imaginary part of y is chosen in the
20 interval [-pi/2,pi/2].
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22 One has catanh(z) = 0.5*clog((1+z)/(1-z)).
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25 C99
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28 atanh(3), cabs(3), cimag(3), complex(7)
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32 2002-07-28 CATANH(3)