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



NAME
       csqrt, csqrtf, csqrtl - complex square root

SYNOPSIS
       #include <&lt;complex.h>&gt;

       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 non-negative
       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.)

CONFORMING TO
       C99.

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

COLOPHON
       This page is part of release 3.05 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/.



                                  2002-07-28                          CSQRT(3)