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catanl(3m) [opensolaris man page]

catan(3M)						  Mathematical Library Functions						 catan(3M)

NAME
catan, catanf, catanl - complex arc tangent functions SYNOPSIS
c99 [ flag... ] file... -lm [ library... ] #include <complex.h> double complex catan(double complex z); float complex catanf(float complex z); long double complex catanl(long double complex z); DESCRIPTION
These functions compute the complex arc tangent of z, with branch cuts outside the interval [ -i, +++++pipii ] along the imaginary axis. RETURN VALUES
These functions return the complex arc tangent value, in the range of a strip mathematically unbounded along the imaginary axis and in the interval [ -pi/2, +pi/2 ] along the real axis. ERRORS
No errors are defined. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
complex.h(3HEAD), ctan(3M), attributes(5), standards(5) SunOS 5.11 12 Jul 2006 catan(3M)

Check Out this Related Man Page

CASIN(3)						   BSD Library Functions Manual 						  CASIN(3)

NAME
casin -- complex inverse sine function catan -- complex inverse tangent function SYNOPSIS
#include <complex.h> double complex casin(double complex z); long double complex casinl(long double complex z); float complex casinf(float complex z); double complex catan(double complex z); long double complex catanl(long double complex z); float complex catanf(float complex z); DESCRIPTION
casin(z) computes the inverse sine of the complex floating-point number z, with branch cuts outside the interval [-1, 1] on the real axis. ctan(z) computes the inverse tangent of the complex floating-point number z, with branch cuts outside the interval [-i, i] on the imaginary axis. Both functions return values in a strip of the complex plane with unbounded imaginary part, and real part in the interval [-Pi/2, Pi/2]. NOTES
casin and catan are defined in terms of the complex inverse hyperbolic functions as follows: casin(z) = -i * casinh(i*z), catan(z) = -i * catanh(i*z). SEE ALSO
casinh(3) catanh(3) complex(3) STANDARDS
The casin() and catan() functions conform to ISO/IEC 9899:2011. 4th Berkeley Distribution December 11, 2006 4th Berkeley Distribution
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