CSQRT
NAME
csqrt, csqrtf, csqrtl − complex square root
SYNOPSIS
#include <complex.h>
double complex csqrt(double complex z);
float complex csqrtf(float complex z);
long double complex csqrtl(long double complex z);
Link with −lm.
DESCRIPTION
These functions calculate the complex square root of z, with a branch cut along the negative real axis. (That means that csqrt(−1+eps*I) will be close to I while csqrt(−1−eps*I) will be close to −I, if eps is a small positive real number.)
VERSIONS
These functions first appeared in glibc in version 2.1.
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
CONFORMING TO
C99, POSIX.1-2001, POSIX.1-2008.
SEE ALSO
COLOPHON
This page is part of release 4.09 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/.
