xref: /minix3/external/bsd/libc++/dist/libcxx/src/valarray.cpp (revision 0a6a1f1d05b60e214de2f05a7310ddd1f0e590e7)
1*4684ddb6SLionel Sambuc //===------------------------ valarray.cpp --------------------------------===//
2*4684ddb6SLionel Sambuc //
3*4684ddb6SLionel Sambuc //                     The LLVM Compiler Infrastructure
4*4684ddb6SLionel Sambuc //
5*4684ddb6SLionel Sambuc // This file is dual licensed under the MIT and the University of Illinois Open
6*4684ddb6SLionel Sambuc // Source Licenses. See LICENSE.TXT for details.
7*4684ddb6SLionel Sambuc //
8*4684ddb6SLionel Sambuc //===----------------------------------------------------------------------===//
9*4684ddb6SLionel Sambuc 
10*4684ddb6SLionel Sambuc #include "valarray"
11*4684ddb6SLionel Sambuc 
12*4684ddb6SLionel Sambuc _LIBCPP_BEGIN_NAMESPACE_STD
13*4684ddb6SLionel Sambuc 
14*4684ddb6SLionel Sambuc template valarray<size_t>::valarray(size_t);
15*4684ddb6SLionel Sambuc template valarray<size_t>::~valarray();
16*4684ddb6SLionel Sambuc template void valarray<size_t>::resize(size_t, size_t);
17*4684ddb6SLionel Sambuc 
18*4684ddb6SLionel Sambuc void
__init(size_t __start)19*4684ddb6SLionel Sambuc gslice::__init(size_t __start)
20*4684ddb6SLionel Sambuc {
21*4684ddb6SLionel Sambuc     valarray<size_t> __indices(__size_.size());
22*4684ddb6SLionel Sambuc     size_t __k = __size_.size() != 0;
23*4684ddb6SLionel Sambuc     for (size_t __i = 0; __i < __size_.size(); ++__i)
24*4684ddb6SLionel Sambuc         __k *= __size_[__i];
25*4684ddb6SLionel Sambuc     __1d_.resize(__k);
26*4684ddb6SLionel Sambuc     if (__1d_.size())
27*4684ddb6SLionel Sambuc     {
28*4684ddb6SLionel Sambuc         __k = 0;
29*4684ddb6SLionel Sambuc         __1d_[__k] = __start;
30*4684ddb6SLionel Sambuc         while (true)
31*4684ddb6SLionel Sambuc         {
32*4684ddb6SLionel Sambuc             size_t __i = __indices.size() - 1;
33*4684ddb6SLionel Sambuc             while (true)
34*4684ddb6SLionel Sambuc             {
35*4684ddb6SLionel Sambuc                 if (++__indices[__i] < __size_[__i])
36*4684ddb6SLionel Sambuc                 {
37*4684ddb6SLionel Sambuc                     ++__k;
38*4684ddb6SLionel Sambuc                     __1d_[__k] = __1d_[__k-1] + __stride_[__i];
39*4684ddb6SLionel Sambuc                     for (size_t __j = __i + 1; __j != __indices.size(); ++__j)
40*4684ddb6SLionel Sambuc                         __1d_[__k] -= __stride_[__j] * (__size_[__j] - 1);
41*4684ddb6SLionel Sambuc                     break;
42*4684ddb6SLionel Sambuc                 }
43*4684ddb6SLionel Sambuc                 else
44*4684ddb6SLionel Sambuc                 {
45*4684ddb6SLionel Sambuc                     if (__i == 0)
46*4684ddb6SLionel Sambuc                         return;
47*4684ddb6SLionel Sambuc                     __indices[__i--] = 0;
48*4684ddb6SLionel Sambuc                 }
49*4684ddb6SLionel Sambuc             }
50*4684ddb6SLionel Sambuc         }
51*4684ddb6SLionel Sambuc     }
52*4684ddb6SLionel Sambuc }
53*4684ddb6SLionel Sambuc 
54*4684ddb6SLionel Sambuc _LIBCPP_END_NAMESPACE_STD
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