NAME
cbrt,
cbrtf,
cbrtl,
sqrt,
sqrtf,
sqrtl
—
cube root and square root functions
LIBRARY
Math Library (libm, -lm)
SYNOPSIS
#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);
DESCRIPTION
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.
RETURN VALUES
If x is negative,
sqrt(
x),
sqrtf(
x) and
sqrtl(
x) set the global variable
errno to EDOM.
SEE ALSO
math(3)
STANDARDS
The
sqrt() function conforms to
ANSI
X3.159-1989 (“ANSI C89”).
HISTORY
The
cbrt() function appeared in
4.3BSD.