/usr/include/armadillo_bits/fn_prod.hpp is in libarmadillo-dev 1:4.200.0+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 | // Copyright (C) 2009-2012 Conrad Sanderson
// Copyright (C) 2009-2012 NICTA (www.nicta.com.au)
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
//! \addtogroup fn_prod
//! @{
//! \brief
//! Delayed product of elements of a matrix along a specified dimension (either rows or columns).
//! The result is stored in a dense matrix that has either one column or one row.
//! For dim = 0, find the sum of each column (i.e. traverse across rows)
//! For dim = 1, find the sum of each row (i.e. traverse across columns)
//! The default is dim = 0.
//! NOTE: this function works differently than in Matlab/Octave.
template<typename T1>
arma_inline
const Op<T1, op_prod>
prod
(
const T1& X,
const uword dim = 0,
const typename enable_if< is_arma_type<T1>::value == true >::result* junk1 = 0,
const typename enable_if< resolves_to_vector<T1>::value == false >::result* junk2 = 0
)
{
arma_extra_debug_sigprint();
arma_ignore(junk1);
arma_ignore(junk2);
return Op<T1, op_prod>(X, dim, 0);
}
template<typename T1>
arma_inline
const Op<T1, op_prod>
prod
(
const T1& X,
const uword dim,
const typename enable_if<resolves_to_vector<T1>::value == true>::result* junk = 0
)
{
arma_extra_debug_sigprint();
arma_ignore(junk);
return Op<T1, op_prod>(X, dim, 0);
}
template<typename T1>
inline
arma_warn_unused
typename T1::elem_type
prod
(
const T1& X,
const arma_empty_class junk1 = arma_empty_class(),
const typename enable_if<resolves_to_vector<T1>::value == true>::result* junk2 = 0
)
{
arma_extra_debug_sigprint();
arma_ignore(junk1);
arma_ignore(junk2);
return op_prod::prod( X );
}
//! \brief
//! Immediate 'product of all values' operation,
//! invoked, for example, by: prod(prod(A))
template<typename T1>
inline
arma_warn_unused
typename T1::elem_type
prod(const Op<T1, op_prod>& in)
{
arma_extra_debug_sigprint();
arma_extra_debug_print("prod(): two consecutive prod() calls detected");
return op_prod::prod( in.m );
}
template<typename T1>
inline
const Op<Op<T1, op_prod>, op_prod>
prod(const Op<T1, op_prod>& in, const uword dim)
{
arma_extra_debug_sigprint();
return Op<Op<T1, op_prod>, op_prod>(in, dim, 0);
}
template<typename T>
arma_inline
arma_warn_unused
const typename arma_scalar_only<T>::result &
prod(const T& x)
{
return x;
}
//! @}
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