GNU Octave  4.2.1
A high-level interpreted language, primarily intended for numerical computations, mostly compatible with Matlab
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Properties Friends Macros Pages
sun-utils.h
Go to the documentation of this file.
1 /*
2 
3 Copyright (C) 1993-2017 John W. Eaton
4 
5 This file is part of Octave.
6 
7 Octave is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by the
9 Free Software Foundation; either version 3 of the License, or (at your
10 option) any later version.
11 
12 Octave is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 for more details.
16 
17 You should have received a copy of the GNU General Public License
18 along with Octave; see the file COPYING. If not, see
19 <http://www.gnu.org/licenses/>.
20 
21 */
22 
23 #if ! defined (octave_sun_utils_h)
24 #define octave_sun_utils_h 1
25 
26 #include "octave-config.h"
27 
28 // This is only needed to dereference pointers to doubles if mixing
29 // GCC and Sun SPARC f77/cc compiled code. See the GCC manual (where the
30 // function access_double() is described) and the Sun f77 manual,
31 // which explains that doubles are not always aligned on 8 byte
32 // boundaries.
33 
34 #if defined (__sparc) && defined (__GNUC__)
35 
36 inline double
37 access_double (double *unaligned_ptr)
38 {
39  union d2i { double d; int i[2]; };
40 
41  union d2i *p = (union d2i *) unaligned_ptr;
42  union d2i u;
43 
44  u.i[0] = p->i[0];
45  u.i[1] = p->i[1];
46 
47  return u.d;
48 }
49 
50 inline void
51 assign_double (double *unaligned_ptr, double value)
52 {
53  union d2i { double d; int i[2]; };
54 
55  double *ptr = &value;
56  union d2i *v = (union d2i *) ptr;
57  union d2i *p = (union d2i *) unaligned_ptr;
58 
59  p->i[0] = v->i[0];
60  p->i[1] = v->i[1];
61 }
62 
63 #endif
64 #endif
u
Definition: lu.cc:138
F77_RET_T F77_REAL &F77_RET_T F77_DBLE &F77_RET_T F77_REAL &F77_RET_T F77_DBLE &F77_RET_T F77_REAL &F77_RET_T F77_DBLE &F77_RET_T const F77_REAL const F77_REAL F77_REAL &F77_RET_T const F77_DBLE const F77_DBLE F77_DBLE &F77_RET_T F77_REAL &F77_RET_T F77_DBLE &F77_RET_T F77_DBLE &F77_RET_T F77_REAL &F77_RET_T F77_REAL &F77_RET_T F77_DBLE &F77_RET_T const F77_DBLE F77_DBLE &F77_RET_T const F77_REAL F77_REAL &F77_RET_T F77_REAL F77_REAL &F77_RET_T F77_DBLE F77_DBLE &F77_RET_T const F77_DBLE const F77_DBLE F77_DBLE * d
=val(i)}if ode{val(i)}occurs in table i
Definition: lookup.cc:239
p
Definition: lu.cc:138
OCTAVE_EXPORT octave_value_list or N dimensional array whose elements are all equal to the IEEE symbol zero divided by nd tex zero divided by nd ifnottex and any operation involving another NaN value(5+NaN).Note that NaN always compares not equal to NaN(NaN!