63 lines
1.7 KiB
C++
63 lines
1.7 KiB
C++
/*
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-----------------------------------------------------------------------------
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This source file is part of GIMPACT Library.
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For the latest info, see http://gimpact.sourceforge.net/
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Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
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email: projectileman@yahoo.com
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This library is free software; you can redistribute it and/or
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modify it under the terms of EITHER:
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(1) The GNU Lesser General Public License as published by the Free
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Software Foundation; either version 2.1 of the License, or (at
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your option) any later version. The text of the GNU Lesser
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General Public License is included with this library in the
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file GIMPACT-LICENSE-LGPL.TXT.
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(2) The BSD-style license that is included with this library in
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the file GIMPACT-LICENSE-BSD.TXT.
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(3) The zlib/libpng license that is included with this library in
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the file GIMPACT-LICENSE-ZLIB.TXT.
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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 files
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GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
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-----------------------------------------------------------------------------
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*/
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#include "GIMPACT/gim_math.h"
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#include "stdlib.h"
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#include "time.h"
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GREAL gim_inv_sqrt(GREAL f)
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{
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GREAL r;
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GIM_INV_SQRT(f,r);
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return r;
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}
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GREAL gim_sqrt(GREAL f)
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{
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GREAL r;
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GIM_SQRT(f,r);
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return r;
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}
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//!Initializes mathematical functions
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void gim_init_math()
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{
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srand(time(0));
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}
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//! Generates an unit random
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GREAL gim_unit_random()
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{
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GREAL rn = rand();
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rn/=(GREAL)RAND_MAX;
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return rn;
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}
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