# casin(3) [osx man page]

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

casincomplex 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] on the real axis. ctan(z) computes the inverse tangent of the complex floating-point number z, with branch cuts outside the interval [-1, 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].-iNOTES

casin and catan are defined in terms of the complex inverse hyperbolic functions as follows: casin(z) =* casinh(i*z), catan(z) =-i* catanh(i*z).-iSEE ALSO

casinh(3) catanh(3) complex(3)STANDARDS

The casin() and catan() functions conform to ISO/IEC 9899:2011.4th Berkeley DistributionDecember 11, 2006 4th Berkeley Distribution

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NAME

casincomplex 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] on the real axis. ctan(z) computes the inverse tangent of the complex floating-point number z, with branch cuts outside the interval [-1, 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].-iNOTES

casin and catan are defined in terms of the complex inverse hyperbolic functions as follows: casin(z) =* casinh(i*z), catan(z) =-i* catanh(i*z).-iSEE ALSO

casinh(3) catanh(3) complex(3)STANDARDS

The casin() and catan() functions conform to ISO/IEC 9899:2011.4th Berkeley DistributionDecember 11, 2006 4th Berkeley Distribution