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NAME | SYNOPSIS | DESCRIPTION | VERSIONS | ATTRIBUTES | CONFORMING TO | SEE ALSO | COLOPHON |
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CASIN(3) Linux Programmer's Manual CASIN(3)
casin, casinf, casinl - complex arc sine
#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.
These functions calculate 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))
These functions first appeared in glibc in version 2.1.
For an explanation of the terms used in this section, see
attributes(7).
┌─────────────────────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├─────────────────────────────┼───────────────┼─────────┤
│casin(), casinf(), casinl() │ Thread safety │ MT-Safe │
└─────────────────────────────┴───────────────┴─────────┘
C99, POSIX.1-2001, POSIX.1-2008.
clog(3), csin(3), complex(7)
This page is part of release 4.15 of the Linux man-pages project. A
description of the project, information about reporting bugs, and the
latest version of this page, can be found at
https://www.kernel.org/doc/man-pages/.
2015-04-19 CASIN(3)
Pages that refer to this page: asin(3), csin(3), complex(7)
Copyright and license for this manual page
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