csqrt(), csqrtf(), csqrtl() — Calculate the complex square root

Standards

Standards / Extensions	C or C++	Dependencies
C99 Single UNIX Specification, Version 3	both	z/OS V1R7 a compiler that is designed to support C99

Format

##include <complex.h>

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

General description

The csqrt() family of functions compute the complex square root of z, with a branch cut along the negative real axis.

Note: The following table shows the viable formats for these functions. See IEEE binary floating-point for more information about IEEE Binary Floating-Point.

Function	Hex	IEEE
csqrt	X	X
csqrtf	X	X
csqrtl	X	X

Returned value

The csqrt() family of functions return the complex square root value, in the range of the right half-plane (including the imaginary axis).

Example

For an example of a similar function see cacos(), cexp() or cpow().

Related information

complex.h
cabs(), cabsf(), cabsl() — Calculate the complex absolute value
cpow(), cpowf(), cpowl() — Calculate the complex power