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 13.1-RELEASE-p6        February 15, 2020       FreeBSD 13.1-RELEASE-p6