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man: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 4.16 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)
/data/webs/external/dokuwiki/data/pages/man/csqrt.txt · Last modified: 2019/05/17 09:32 by 127.0.0.1

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