Man page - csqrt(3)

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Manual

csqrt

NAME
LIBRARY
SYNOPSIS
DESCRIPTION
ATTRIBUTES
STANDARDS
HISTORY
SEE ALSO

NAME

csqrt, csqrtf, csqrtl - complex square root

LIBRARY

Math library ( libm , -lm )

SYNOPSIS

#include <complex.h>

double complex csqrt(double complex z );
float complex csqrtf(float complex
z );
long double complex csqrtl(long double complex
z );

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.)

ATTRIBUTES

For an explanation of the terms used in this section, see attributes (7).

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STANDARDS

C11, POSIX.1-2008.

HISTORY

glibc 2.1. C99, POSIX.1-2001.

SEE ALSO

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