1 .\" Copyright (c) 1985, 1991 Regents of the University of California.
2 .\" All rights reserved.
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20 .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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32 .\" from: @(#)hypot.3 6.7 (Berkeley) 5/6/91
33 .\" $FreeBSD: src/lib/msun/man/hypot.3,v 1.5.2.4 2002/12/29 16:35:36 schweikh Exp $
34 .\" $DragonFly: src/lib/msun/man/Attic/hypot.3,v 1.2 2003/06/17 04:26:52 dillon Exp $
44 .Nd Euclidean distance and complex absolute value functions
50 .Fn hypot "double x" "double y"
52 .Fn hypotf "float x" "float y"
53 .Vt struct {double x, y;} z ;
56 .Vt struct {float x, y;} z ;
69 in such a way that underflow will not happen, and overflow
70 occurs only if the final result deserves it.
78 .Sh ERROR (due to Roundoff, etc.)
82 .Fn hypot "5.0" "12.0"
85 in general, hypot and cabs return an integer whenever an
86 integer might be expected.
88 The same cannot be said for the shorter and faster version of hypot
89 and cabs that is provided in the comments in cabs.c; its error can
100 with "reserved operand" in place of "\*(Na", the
103 But programmers on machines other than a
106 might be surprised at first to discover that
107 .Fn hypot "\(+-\*(If" "\*(Na"
109 This is intentional; it happens because
110 .Fn hypot "\*(If" "v"
117 .Fn hypot "\*(If" "v"
120 Unlike the reserved operand fault on a
125 disappear when it turns out to be irrelevant, as it does in
126 .Fn hypot "\*(If" "\*(Na" .