1 // Ceres Solver - A fast non-linear least squares minimizer
2 // Copyright 2015 Google Inc. All rights reserved.
3 // http://ceres-solver.org/
5 // Redistribution and use in source and binary forms, with or without
6 // modification, are permitted provided that the following conditions are met:
8 // * Redistributions of source code must retain the above copyright notice,
9 // this list of conditions and the following disclaimer.
10 // * Redistributions in binary form must reproduce the above copyright notice,
11 // this list of conditions and the following disclaimer in the documentation
12 // and/or other materials provided with the distribution.
13 // * Neither the name of Google Inc. nor the names of its contributors may be
14 // used to endorse or promote products derived from this software without
15 // specific prior written permission.
17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18 // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
21 // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 // POSSIBILITY OF SUCH DAMAGE.
29 // Author: keir@google.com (Keir Mierle)
31 // Portable typedefs for various fixed-size integers. Uses template
32 // metaprogramming instead of fragile compiler defines.
34 #ifndef CERES_INTERNAL_INTEGRAL_TYPES_H_
35 #define CERES_INTERNAL_INTEGRAL_TYPES_H_
40 // Compile time ternary on types.
41 template<bool kCondition, typename kTrueType, typename kFalseType>
43 typedef kTrueType type;
45 template<typename kTrueType, typename kFalseType>
46 struct Ternary<false, kTrueType, kFalseType> {
47 typedef kFalseType type;
50 #define CERES_INTSIZE(TYPE) \
51 typename Ternary<sizeof(TYPE) * 8 == kBits, TYPE,
59 CERES_INTSIZE(long int)
60 CERES_INTSIZE(long long)
61 void>::type >::type >::type >::type >::type
66 struct UnsignedInteger {
68 CERES_INTSIZE(unsigned char)
69 CERES_INTSIZE(unsigned short)
70 CERES_INTSIZE(unsigned int)
71 CERES_INTSIZE(unsigned long int)
72 CERES_INTSIZE(unsigned long long)
73 void>::type >::type >::type >::type >::type
79 typedef Integer< 8>::type int8;
80 typedef Integer<32>::type int32;
81 typedef Integer<64>::type int64;
83 typedef UnsignedInteger< 8>::type uint8;
84 typedef UnsignedInteger<16>::type uint16;
85 typedef UnsignedInteger<32>::type uint32;
86 typedef UnsignedInteger<64>::type uint64;
88 } // namespace internal
91 #endif // CERES_INTERNAL_INTEGRAL_TYPES_H_