| .\" Copyright (c) 1985, 1991 Regents of the University of California. |
| .\" All rights reserved. |
| .\" |
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| .\" modification, are permitted provided that the following conditions |
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| .\" This product includes software developed by the University of |
| .\" California, Berkeley and its contributors. |
| .\" 4. Neither the name of the University nor the names of its contributors |
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| .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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| .\" from: @(#)sqrt.3 6.4 (Berkeley) 5/6/91 |
| .\" $FreeBSD: src/lib/msun/man/sqrt.3,v 1.12 2005/01/14 23:28:28 das Exp $ |
| .\" |
| .Dd May 6, 1991 |
| .Dt SQRT 3 |
| .Os |
| .Sh NAME |
| .Nm cbrt , |
| .Nm cbrtf , |
| .Nm sqrt , |
| .Nm sqrtf |
| .Nd cube root and square root functions |
| .Sh LIBRARY |
| .Lb libm |
| .Sh SYNOPSIS |
| .In math.h |
| .Ft double |
| .Fn cbrt "double x" |
| .Ft float |
| .Fn cbrtf "float x" |
| .Ft double |
| .Fn sqrt "double x" |
| .Ft float |
| .Fn sqrtf "float x" |
| .Sh DESCRIPTION |
| The |
| .Fn cbrt |
| and the |
| .Fn cbrtf |
| functions compute |
| the cube root of |
| .Ar x . |
| .Pp |
| The |
| .Fn sqrt |
| and the |
| .Fn sqrtf |
| functions compute the |
| non-negative square root of x. |
| .Sh RETURN VALUES |
| The |
| .Fn cbrt |
| and the |
| .Fn cbrtf |
| functions return the requested cube root. |
| The |
| .Fn sqrt |
| and the |
| .Fn sqrtf |
| functions return the requested square root |
| unless an error occurs. |
| An attempt to take the |
| .Fn sqrt |
| of negative |
| .Fa x |
| raises an invalid exception and causes an \*(Na to be returned. |
| .Sh SEE ALSO |
| .Xr fenv 3 , |
| .Xr math 3 |
| .Sh STANDARDS |
| The |
| .Fn sqrt |
| function conforms to |
| .St -isoC . |
| .Sh HISTORY |
| The |
| .Fn cbrt |
| function appeared in |
| .Bx 4.3 . |