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  • Committer: Monty Taylor
  • Date: 2008-09-16 00:00:48 UTC
  • mto: This revision was merged to the branch mainline in revision 391.
  • Revision ID: monty@inaugust.com-20080916000048-3rvrv3gv9l0ad3gs
Fixed copyright headers in drizzled/

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drizzled/functions/ln.cc
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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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 *
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 *  Copyright (C) 2008 Sun Microsystems
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 *
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 *  This program is free software; you can redistribute it and/or modify
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 *  it under the terms of the GNU General Public License as published by
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 *  the Free Software Foundation; version 2 of the License.
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 *
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 *  This program 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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 *
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 *  You should have received a copy of the GNU General Public License
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 *  along with this program; if not, write to the Free Software
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 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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 */
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#include <drizzled/server_includes.h>
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#include CSTDINT_H
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#include <drizzled/functions/ln.h>
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#include CMATH_H
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#if defined(CMATH_NAMESPACE)
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using namespace CMATH_NAMESPACE;
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#endif
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/** Gateway to natural LOG function. */
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double Item_func_ln::val_real()
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{
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  assert(fixed == 1);
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  double value= args[0]->val_real();
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  if ((null_value= args[0]->null_value))
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    return 0.0;
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  if (value <= 0.0)
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  {
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    signal_divide_by_null();
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    return 0.0;
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  }
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  return log(value);
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}
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