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).
Interface |
Attribute |
Value |
csqrt (), csqrtf (), csqrtl () |
Thread safety |
MT-Safe |
C99, POSIX.1-2001, POSIX.1-2008.
SEE ALSO¶
cabs(3),
cexp(3),
complex(7)
COLOPHON¶
This page is part of release 4.10 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/.