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SQRT(3) Library Functions Manual SQRT(3)

cbrt, cbrtf, cbrtl, sqrt, sqrtf, sqrtlcube root and square root functions

#include <math.h>

double
cbrt(double x);

float
cbrtf(float x);

long double
cbrtl(long double x);

double
sqrt(double x);

float
sqrtf(float x);

long double
sqrtl(long double x);

The cbrt() function computes the cube root of x. The cbrtf() function is a single precision version of cbrt(). The cbrtl() function is an extended precision version of cbrt().

The sqrt() function computes the non-negative square root of x. The sqrtf() function is a single precision version of sqrt(). The sqrtl() function is an extended precision version of sqrt().

If x is negative, sqrt(x), sqrtf(x) and sqrtl(x) set the global variable errno to EDOM.

A sqrt() function first appeared in Version 3 AT&T UNIX.

The cbrt() function appeared in 4.3BSD.

July 17, 2013 OpenBSD-current