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28 .\" from: @(#)hypot.3 6.7 (Berkeley) 5/6/91
39 .Nd Euclidean distance and complex absolute value functions
45 .Fn hypot "double x" "double y"
47 .Fn hypotf "float x" "float y"
50 .Fn cabs "double complex z"
52 .Fn cabsf "float complex z"
61 in such a way that underflow will not happen, and overflow
62 occurs only if the final result deserves it.
67 functions compute the complex absolute value of
76 .Sh ERROR (due to Roundoff, etc.)
80 .Fn hypot "5.0" "12.0"
83 in general, hypot and cabs return an integer whenever an
84 integer might be expected.
86 The same cannot be said for the shorter and faster version of hypot
87 and cabs that is provided in the comments in cabs.c; its error can
99 might be surprised at first to discover that
100 .Fn hypot "\(+-\*(If" "\*(Na"
102 This is intentional; it happens because
103 .Fn hypot "\*(If" "v"
110 .Fn hypot "\*(If" "v"
113 Unlike the reserved operand fault on a
118 disappear when it turns out to be irrelevant, as it does in
119 .Fn hypot "\*(If" "\*(Na" .