49 lines
1.7 KiB
C
49 lines
1.7 KiB
C
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/* Compute hypothenuse. */
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/* Copyright (C) 1997-1999 Free Software Foundation, Inc.
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This file is part of the GNU ISO C++ Library. This library is free
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software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option)
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any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this library; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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USA.
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As a special exception, you may use this file as part of a free software
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library without restriction. Specifically, if other files instantiate
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templates or use macros or inline functions from this file, or you compile
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this file and link it with other files to produce an executable, this
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file does not by itself cause the resulting executable to be covered by
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the GNU General Public License. This exception does not however
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invalidate any other reasons why the executable file might be covered by
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the GNU General Public License. */
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#include <config.h>
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/* If there is a `double' version use it. Otherwise make it simply and
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stupid. */
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extern double hypot (double, double);
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extern double sqrt (double);
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extern float sqrtf (float);
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float
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hypotf (float x, float y)
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{
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#ifdef HAVE_HYPOT
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return hypot (x, y);
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#elif HAVE_SQRTF
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return sqrtf (x * x + y * y);
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#else
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return sqrt (x * x + y * y);
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#endif
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}
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