CATAN
Section: complex math routines (3)
Updated: 2002-07-28
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NAME
catan, catanf, catanl - complex arc tangents
SYNOPSIS
#include <complex.h>
double complex catan(double complex z);
float complex catanf(float complex z);
long double complex catanl(long double complex z);
Link with -lm.
DESCRIPTION
The catan() function calculates the complex atan().
If y = catan(z), then z = ctan(y).
The real part of y is chosen in the interval [-pi/2,pi/2].
One has
catan(z) = 1/2i clog((1+iz)/(1-iz)).
CONFORMING TO
C99
SEE ALSO
ccos(3),
clog(3),
complex(5)
Index
- NAME
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- SYNOPSIS
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- DESCRIPTION
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- CONFORMING TO
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- SEE ALSO
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