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CASIN

Section: Linux Programmer's Manual (3)
Updated: 2008-08-11
Index Return to Main Contents

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NAME

casin, casinf, casinl - complex arc sine  

SYNOPSIS

#include <complex.h>

double complex casin(double complex z);
float complex casinf(float complex z);
long double complex casinl(long double complex z);

Link with -lm.  

DESCRIPTION

The casin() function calculates the complex arc sine of z. If y = casin(z), then z = csin(y). The real part of y is chosen in the interval [-pi/2,pi/2].

One has:

    casin(z) = -i clog(iz + csqrt(1 - z * z))

 

VERSIONS

These functions first appeared in glibc in version 2.1.  

CONFORMING TO

C99.  

SEE ALSO

clog(3), csin(3), complex(7)  

COLOPHON

This page is part of release 3.35 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://man7.org/linux/man-pages/.

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Index

NAME

SYNOPSIS

DESCRIPTION

VERSIONS

CONFORMING TO

SEE ALSO

COLOPHON

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