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
       Calculate  the square root of a given complex number, with nonnegative real part, and 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.

CONFORMING TO
       C99.

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

COLOPHON
       This  page  is  part of release 3.74 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 http://www.kernel.org/doc/man-pages/.



                                            2008-08-11                                   CSQRT(3)