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| .\" from: @(#)ieee.3 6.4 (Berkeley) 5/6/91 |
| .\" $FreeBSD: src/lib/msun/man/nextafter.3,v 1.2 2005/03/07 05:00:29 das Exp $ |
| .\" |
| .Dd May 4, 2005 |
| .Dt NEXTAFTER 3 |
| .Os |
| .Sh NAME |
| .Nm nextafter , |
| .Nm nextafterf , |
| .Nm nextafterl , |
| .Nm nexttoward , |
| .Nm nexttowardf , |
| .Nm nexttowardl |
| .Nd next representable value |
| .Sh LIBRARY |
| .Lb libm |
| .Sh SYNOPSIS |
| .In math.h |
| .Ft double |
| .Fn nextafter "double x" "double y" |
| .Ft float |
| .Fn nextafterf "float x" "float y" |
| .Ft long double |
| .Fn nextafterl "long double x" "long double y" |
| .Ft double |
| .Fn nexttoward "double x" "long double y" |
| .Ft float |
| .Fn nexttowardf "float x" "long double y" |
| .Ft long double |
| .Fn nexttowardl "long double x" "long double y" |
| .Sh DESCRIPTION |
| These functions |
| return the next machine representable number from |
| .Fa x |
| in direction |
| .Fa y . |
| .Sh SEE ALSO |
| .Xr ieee 3 , |
| .Xr math 3 |
| .Sh STANDARDS |
| The |
| .Fn nextafter , |
| .Fn nextafterf , |
| .Fn nextafterl , |
| .Fn nexttoward , |
| .Fn nexttowardf , |
| and |
| .Fn nexttowardl |
| routines conform to |
| .St -isoC-99 . |
| They implement the Nextafter function recommended by |
| .St -ieee754 , |
| with the extension that |
| .Fn nextafter +0.0, -0.0 |
| returns |
| .Li -0.0 , |
| and |
| .Fn nextafter -0.0, +0.0 |
| returns |
| .Li +0.0 . |
| .Sh HISTORY |
| The |
| .Fn nextafter |
| function appeared in |
| .Bx 4.3 , |
| and |
| .Fn nextafterf |
| appeared in |
| .Fx 2.0 . |