# sqrt(3) [freebsd man page]

```SQRT(3) 						   BSD 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.)

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 sqrtl() function appeared in FreeBSD 8.0.  The cbrtl() function appeared in FreeBSD 9.0.

BSD								   March 5, 2011							       BSD```

## Check Out this Related Man Page

```SQRT(3) 						   BSD 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.)

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 sqrtl() function appeared in FreeBSD 8.0.  The cbrtl() function appeared in FreeBSD 9.0.

BSD								   March 5, 2011							       BSD```
Man Page

## BSD Permission Denied Problem

I'm new to *nixs and I decided to start with FreeBSD. I downloaded the ISO and installed it successfully, and managed to log in as root. Now everytime I try to enter into a directory ( I think thats what Im doing) such as /etc or /usr I always will get a permission denied. Any help is...

## sqrt

Hi! when i'm trying to compile this lite example on my linux machine I'll get errors and i don't know why.. #include <stdio.h> #include <math.h> /* needed by sqrt() */ int main() { printf("%f", sqrt(10.0)); return (0); } this is the error: /tmp/cc33hNVHK.o: In function...

## sqrt is not find???

I was writing a simple program in linux, which includes sqrt function of c. I included the math.h. But when I use gcc to compile it, it gave an error message: /home/murat/tmp/ccOv9upo.o(.text+0x4b): In function `main': : undefined reference to `sqrt' collect2: ld returned 1 exit status I...

## 4. Programming

Hi, I got an easy problem for you but really difficult for me 'cause I am pretty new to this field I got header file <math.h> included in my .c file , then I write the code as below: k = sqrt(i); /* both variables k and i are int */ then I cc temp.c it says like this undefined...

## why put double square brackets in an if clause?

what is the rationale behind putting double square brackets in an if clause? for e.g. if ] || ] || ]; then echo some fields are null fi

## how can i find sqrt of a any number without using expr

hi friends can any body tell me how can i find sqrt of a any given number without using expr in bash shell while i am doing i got some errors please take a look and code is here x=\$((( ( sqrt(\$1) ) | bc ))) echo \$x \$ sh quadratic-eqn-roots.sh 9 quadratic-eqn-roots.sh: line 12: ( (...

## C Library reference error using sqrt() - will not compile.

This so basic that it should work.... Any ideas would be appreciared. Using a number directly in the sqrt allows it to compile. primrose > cat a.c #include <stdio.h> #include <math.h> int main(void) { double abcd=9; printf("%f\n",sqrt(abcd)); } primrose > gcc a.c Undefined first...

## Single or double square brackets

Hi frieds, I don't understand the difference between single square bracket and double square brackets in a IF condition. Ex. if ; then RETURNJOB=1 else RETURNJOB=0 fi It run, but this if ]; then RETURNJOB=1 else RETURNJOB=0 fi

## The square root code I coded on this site...

Hi all, (mainly Neo)... I keep noticing that the SQRT code I wrote recently for a POSIX shell keeps appearing, (the green colour sticks out like a sore thumb). So I decided to take a look on Google. Guess what? UNIX.COM comes first in Google's listing just from two words, see image...