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mirror of https://git.FreeBSD.org/src.git synced 2024-12-25 11:37:56 +00:00
freebsd/contrib/libstdc++/valarray.cc
1999-10-16 03:52:48 +00:00

51 lines
1.6 KiB
C++

#include <std/std_valarray.h>
// Some Explicit Instanciations.
template class multiplies<size_t>;
template size_t accumulate(size_t*, size_t*, size_t, multiplies<size_t>);
template void
__valarray_fill(size_t* __restrict__, size_t, const size_t&);
template void
__valarray_copy(const size_t* __restrict__, size_t, size_t* __restrict__);
template valarray<size_t>::valarray(size_t);
template valarray<size_t>::~valarray();
template valarray<size_t>::valarray(const valarray<size_t>&);
template size_t valarray<size_t>::size() const;
template size_t& valarray<size_t>::operator[](size_t);
template size_t valarray<size_t>::product() const;
void __gslice_to_index(size_t __o, const valarray<size_t>& __l,
const valarray<size_t>& __s,
valarray<size_t>& __i)
{
const size_t __n = __l.size();
size_t* const __t = static_cast<size_t*>(alloca(__n*sizeof(size_t)));
__valarray_fill(__t, __n, size_t(0));
const size_t __z = __i.size();
__valarray_fill(&__i[0], __z, __o);
for (size_t __j=0; __j<__z; ++__j) {
for (size_t __k=0; __k<__n; ++__k)
__i[__j] += __s[__k]*__t[__k];
++__t[__n-1];
for (size_t __k=__n-1; __k; --__k) {
if (__t[__k] >= __l[__k]) {
__t[__k] = 0;
++__t[__k-1];
}
}
}
}
_Indexer::_Indexer(size_t __o, const valarray<size_t>& __l,
const valarray<size_t>& __s)
: _M_count(1), _M_start(__o), _M_size(__l), _M_stride(__s),
_M_index(__l.size() ? __l.product() : 0)
{ __gslice_to_index(__o, __l, __s, _M_index); }