cbrt man page on FreeBSD

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SQRT(3)			 BSD Library Functions Manual		       SQRT(3)

NAME
     cbrt, cbrtf, 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);

     double
     sqrt(double x);

     float
     sqrtf(float x);

     long double
     sqrtl(long double x);

DESCRIPTION
     The cbrt() and the cbrtf() 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() and the cbrtf() 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(), 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.

BSD				 March 1, 2008				   BSD
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