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Command: sqrtf | Section: 3 | Source: FreeBSD | File: sqrtf.3.gz
SQRT(3) FreeBSD Library Functions Manual SQRT(3)
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
The cbrt(), cbrtf(), and cbrtl() functions return the requested cube
root. The sqrt(), sqrtf(), and sqrtl() functions return the requested
square root unless an error occurs. An attempt to take the sqrt() of
negative x raises an invalid exception and causes an NaN to be returned
(except that the square root of -0 is valid and equal to -0.)
SEE ALSO
fenv(3), math(3)
STANDARDS
The cbrt(), cbrtf(), cbrtl(), sqrt(), sqrtf(), and sqrtl() functions
conform to ISO/IEC 9899:1999 ("ISO C99").
HISTORY
The cbrt() function appeared in 4.3BSD. The sqrt() function appeared in
Version 2 AT&T UNIX. sqrtl() function appeared in FreeBSD 8.0. The
cbrtl() function appeared in FreeBSD 9.0.
FreeBSD 14.1-RELEASE-p8 February 15, 2020 FreeBSD 14.1-RELEASE-p8