SQRT(3M)SQRT(3M)NAME
cbrt, sqrt - cube root, square root
SYNOPSIS
#include <math.h>
double cbrt(x)
double x;
double sqrt(x)
double x;
DESCRIPTIONCbrt(x) returns the cube root of x.
Sqrt(x) returns the square root of x.
DIAGNOSTICS
On a VAX, sqrt(negative) returns the reserved operand and sets errno to
EDOM .
ERROR (due to Roundoff etc.)
Cbrt is accurate to within 0.7 ulps.
Sqrt on a VAX is accurate to within 0.501 ulps.
Sqrt on a machine that conforms to IEEE 754 is correctly rounded in
accordance with the rounding mode in force; the error is less than half
an ulp in the default mode (round-to-nearest). An ulp is one Unit in
the Last Place carried.
SEE ALSOmath(3M), infnan(3M)AUTHOR
W. Kahan
4.3 Berkeley Distribution May 12, 1986 SQRT(3M)