CACOS
Section: Linux Programmer's Manual (3)
Updated: 2008-08-11
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NAME
cacos, cacosf, cacosl - complex arc cosine
SYNOPSIS
#include <complex.h>
double complex cacos(double complex z);
float complex cacosf(float complex z);
long double complex cacosl(long double complex z);
Link with -lm.
DESCRIPTION
The
cacos()
function calculates the complex arc cosine of
z.
If y = cacos(z), then z = ccos(y).
The real part of
y
is chosen in the interval [0,pi].
One has:
cacos(z) = -i clog(z + csqrt(z * z - 1))
VERSIONS
These functions first appeared in glibc in version 2.1.
CONFORMING TO
C99.
SEE ALSO
ccos(3),
clog(3),
complex(7)
COLOPHON
This page is part of release 3.27 of the Linux
man-pages
project.
A description of the project,
and information about reporting bugs,
can be found at
http://www.kernel.org/doc/man-pages/.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- VERSIONS
-
- CONFORMING TO
-
- SEE ALSO
-
- COLOPHON
-
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