| The Android Open Source Project | 1dc9e47 | 2009-03-03 19:28:35 -0800 | [diff] [blame] | 1 | .\" Copyright (c) 1985, 1991 Regents of the University of California. |
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| 32 | .\" from: @(#)ieee.3 6.4 (Berkeley) 5/6/91 |
| 33 | .\" $FreeBSD: src/lib/msun/man/nextafter.3,v 1.2 2005/03/07 05:00:29 das Exp $ |
| 34 | .\" |
| 35 | .Dd May 4, 2005 |
| 36 | .Dt NEXTAFTER 3 |
| 37 | .Os |
| 38 | .Sh NAME |
| 39 | .Nm nextafter , |
| 40 | .Nm nextafterf , |
| 41 | .Nm nextafterl , |
| 42 | .Nm nexttoward , |
| 43 | .Nm nexttowardf , |
| 44 | .Nm nexttowardl |
| 45 | .Nd next representable value |
| 46 | .Sh LIBRARY |
| 47 | .Lb libm |
| 48 | .Sh SYNOPSIS |
| 49 | .In math.h |
| 50 | .Ft double |
| 51 | .Fn nextafter "double x" "double y" |
| 52 | .Ft float |
| 53 | .Fn nextafterf "float x" "float y" |
| 54 | .Ft long double |
| 55 | .Fn nextafterl "long double x" "long double y" |
| 56 | .Ft double |
| 57 | .Fn nexttoward "double x" "long double y" |
| 58 | .Ft float |
| 59 | .Fn nexttowardf "float x" "long double y" |
| 60 | .Ft long double |
| 61 | .Fn nexttowardl "long double x" "long double y" |
| 62 | .Sh DESCRIPTION |
| 63 | These functions |
| 64 | return the next machine representable number from |
| 65 | .Fa x |
| 66 | in direction |
| 67 | .Fa y . |
| 68 | .Sh SEE ALSO |
| 69 | .Xr ieee 3 , |
| 70 | .Xr math 3 |
| 71 | .Sh STANDARDS |
| 72 | The |
| 73 | .Fn nextafter , |
| 74 | .Fn nextafterf , |
| 75 | .Fn nextafterl , |
| 76 | .Fn nexttoward , |
| 77 | .Fn nexttowardf , |
| 78 | and |
| 79 | .Fn nexttowardl |
| 80 | routines conform to |
| 81 | .St -isoC-99 . |
| 82 | They implement the Nextafter function recommended by |
| 83 | .St -ieee754 , |
| 84 | with the extension that |
| 85 | .Fn nextafter +0.0, -0.0 |
| 86 | returns |
| 87 | .Li -0.0 , |
| 88 | and |
| 89 | .Fn nextafter -0.0, +0.0 |
| 90 | returns |
| 91 | .Li +0.0 . |
| 92 | .Sh HISTORY |
| 93 | The |
| 94 | .Fn nextafter |
| 95 | function appeared in |
| 96 | .Bx 4.3 , |
| 97 | and |
| 98 | .Fn nextafterf |
| 99 | appeared in |
| 100 | .Fx 2.0 . |