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NAME | SYNOPSIS | DESCRIPTION | VERSIONS | CONFORMING TO | SEE ALSO | COLOPHONThe Linux Programming Interface


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

NAME         top

       csqrt, csqrtf, csqrtl - complex square root

SYNOPSIS         top

       #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         top

       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         top

       These functions first appeared in glibc in version 2.1.

CONFORMING TO         top

       C99.

SEE ALSO         top

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

COLOPHON         top

       This page is part of release 3.32 of the Linux man-pages project.  A
       description of the project, and information about reporting bugs, can be found
       at http://www.kernel.org/doc/man-pages/.

                                      2008-08-11                             CSQRT(3)

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