1 .\" Copyright (c) 1985, 1991 Regents of the University of California.
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20 .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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32 .\" from: @(#)ieee.3 6.4 (Berkeley) 5/6/91
33 .\" $FreeBSD: src/lib/msun/man/ieee.3,v 1.5.2.5 2001/12/17 10:08:36 ru Exp $
34 .\" $DragonFly: src/lib/msun/man/Attic/ieee.3,v 1.2 2003/06/17 04:26:52 dillon Exp $
52 .Nd functions for IEEE arithmetic
58 .Fn copysign "double x" "double y"
60 .Fn copysignf "float x" "float y"
70 .Fn nextafter "double x" "double y"
72 .Fn nextafterf "float x" "float y"
74 .Fn remainder "double x" "double y"
76 .Fn remainderf "float x" "float y"
78 .Fn scalbn "double x" "int n"
80 .Fn scalbnf "float x" "int n"
82 These functions are required or recommended by
90 with its sign changed to
96 return the value 1 just when
103 .Pf \\*(Ba Ns Fa x Ns \\*(Ba
112 .Fa x Ns 's exponent,
125 return the next machine representable number from
141 is the integer nearest the exact value of
149 .Fa x No / Fa y No \\*(Ba
155 is even. Consequently
156 the remainder is computed exactly and
158 .Pf \\*(Ba Fa r No \\*(Ba
162 .Pf \\*(Ba Fa y No \\*(Ba/2 .
167 .Fn remainder \*(If 0
168 are invalid operations that produce a \*(Na.
174 .Fa x Ns \(**(2** Ns Fa n )
175 computed by exponent manipulation.
181 functions appeared in