1 /*
2 * Copyright (c) 2011, Michael Lehn
3 *
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1) Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2) Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
15 * distribution.
16 * 3) Neither the name of the FLENS development group nor the names of
17 * its contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 /* Based on
34 *
35 DOUBLE PRECISION FUNCTION DLAMCH( CMACH )
36 *
37 * -- LAPACK auxiliary routine (version 3.3.0) --
38 * -- LAPACK is a software package provided by Univ. of Tennessee, --
39 * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
40 * Based on LAPACK DLAMCH but with Fortran 95 query functions
41 * See: http://www.cs.utk.edu/~luszczek/lapack/lamch.html
42 * and http://www.netlib.org/lapack-dev/lapack-coding/program-style.html#id2537289
43 * July 2010
44 */
45
46 #ifndef FLENS_LAPACK_AUX_LAMCH_H
47 #define FLENS_LAPACK_AUX_LAMCH_H 1
48
49 #include <flens/lapack/typedefs.h>
50
51 namespace flens { namespace lapack {
52
53 namespace LAMCH {
54
55 template <typename T>
56 struct Real
57 {
58 typedef T Type;
59 };
60
61 template <typename T>
62 struct Real<std::complex<T> >
63 {
64 typedef T Type;
65 };
66
67 } // namespace LAMCH
68
69 template <typename TT>
70 typename LAMCH::Real<TT>::Type
71 lamch(MachineParameter machineParameter);
72
73 } } // namespace lapack, flens
74
75 #endif // FLENS_LAPACK_AUX_LAMCH_H
2 * Copyright (c) 2011, Michael Lehn
3 *
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1) Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2) Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
15 * distribution.
16 * 3) Neither the name of the FLENS development group nor the names of
17 * its contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 /* Based on
34 *
35 DOUBLE PRECISION FUNCTION DLAMCH( CMACH )
36 *
37 * -- LAPACK auxiliary routine (version 3.3.0) --
38 * -- LAPACK is a software package provided by Univ. of Tennessee, --
39 * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
40 * Based on LAPACK DLAMCH but with Fortran 95 query functions
41 * See: http://www.cs.utk.edu/~luszczek/lapack/lamch.html
42 * and http://www.netlib.org/lapack-dev/lapack-coding/program-style.html#id2537289
43 * July 2010
44 */
45
46 #ifndef FLENS_LAPACK_AUX_LAMCH_H
47 #define FLENS_LAPACK_AUX_LAMCH_H 1
48
49 #include <flens/lapack/typedefs.h>
50
51 namespace flens { namespace lapack {
52
53 namespace LAMCH {
54
55 template <typename T>
56 struct Real
57 {
58 typedef T Type;
59 };
60
61 template <typename T>
62 struct Real<std::complex<T> >
63 {
64 typedef T Type;
65 };
66
67 } // namespace LAMCH
68
69 template <typename TT>
70 typename LAMCH::Real<TT>::Type
71 lamch(MachineParameter machineParameter);
72
73 } } // namespace lapack, flens
74
75 #endif // FLENS_LAPACK_AUX_LAMCH_H