SQRT

Section: Linux Programmer's Manual (3)
Updated: 2002-07-27
Index Return to Main Contents
 

NAME

sqrt, sqrtf, sqrtl - square root function  

SYNOPSIS

#include <math.h>

double sqrt(double x);

float sqrtf(float x);
long double sqrtl(long double x);

Link with -lm.  

DESCRIPTION

The sqrt() function returns the non-negative square root of x. It fails and sets errno to EDOM, if x is negative.  

ERRORS

EDOM
x is negative.
 

CONFORMING TO

SVr4, 4.3BSD, C89. The float and long double variants are C99 requirements.  

SEE ALSO

cbrt(3), csqrt(3), hypot(3)


 

Index

NAME
SYNOPSIS
DESCRIPTION
ERRORS
CONFORMING TO
SEE ALSO

linux.jgfs.net manual pages