Drizzled Public API Documentation

asin.cc
1 /* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
2  * vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
3  *
4  * Copyright (C) 2008 Sun Microsystems, Inc.
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; version 2 of the License.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
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17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18  */
19 
20 #include <config.h>
21 #include <math.h>
22 #include "asin.h"
23 
24 namespace drizzled
25 {
26 
28 {
29  assert(fixed == 1);
30  // the volatile's for BUG #2338 to calm optimizer down (because of gcc's bug)
31  volatile double value= args[0]->val_real();
32  if ((null_value=(args[0]->null_value || (value < -1.0 || value > 1.0))))
33  return 0.0;
34  return asin(value);
35 }
36 
37 } /* namespace drizzled */