SQRT

NAME
     sqrt -- square root function

SYNOPSIS
     #include <math.h>

     double
     sqrt(double x);

     long double
     sqrtl(long double x);

     float
     sqrtf(float x);

DESCRIPTION
     The sqrt() function compute the non-negative square root of x.

SPECIAL VALUES
     sqrt(-0) returns -0.

     sqrt(x) returns a NaN and generates a domain error for x < 0.

SEE ALSO
     math(3)

STANDARDS
     The sqrt() function conforms to ISO/IEC 9899:1999(E).

BSD                            January 27, 2003                            BSD