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LEARN ABOUT X11R4

csqrt

CSQRT(3)						     Linux Programmer's Manual							  CSQRT(3)

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 |
       +----------------------------+---------------+---------+

CONFORMING TO

       C99, POSIX.1-2001, POSIX.1-2008.

SEE ALSO

       cabs(3), cexp(3), complex(7)

COLOPHON

       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/.

								    2017-09-15								  CSQRT(3)