NAME

cbrt, cbrtf, cbrtl, sqrt, sqrtf, sqrtl — cube root and square root functions

LIBRARY

Math Library (libm, -lm)

#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(), cbrtf() and cbrtl() functions compute the cube root of x.

The sqrt(), sqrtf() and sqrtl() functions compute the non-negative square root of x.

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

The sqrt() function conforms to ANSI X3.159-1989 (“ANSI C89”).

The cbrt() function appeared in 4.3BSD.