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diff --git a/src/armadillo/include/armadillo_bits/fn_randi.hpp b/src/armadillo/include/armadillo_bits/fn_randi.hpp
new file mode 100644
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--- /dev/null
+++ b/src/armadillo/include/armadillo_bits/fn_randi.hpp
@@ -0,0 +1,270 @@
+// SPDX-License-Identifier: Apache-2.0
+// 
+// Copyright 2008-2016 Conrad Sanderson (http://conradsanderson.id.au)
+// Copyright 2008-2016 National ICT Australia (NICTA)
+// 
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ------------------------------------------------------------------------
+
+
+//! \addtogroup fn_randi
+//! @{
+
+
+
+template<typename obj_type>
+arma_warn_unused
+inline
+obj_type
+randi(const uword n_rows, const uword n_cols, const distr_param& param = distr_param(), const typename arma_Mat_Col_Row_only<obj_type>::result* junk = nullptr)
+  {
+  arma_extra_debug_sigprint();
+  arma_ignore(junk);
+  
+  typedef typename obj_type::elem_type eT;
+  
+  if(is_Col<obj_type>::value)
+    {
+    arma_debug_check( (n_cols != 1), "randi(): incompatible size" );
+    }
+  else
+  if(is_Row<obj_type>::value)
+    {
+    arma_debug_check( (n_rows != 1), "randi(): incompatible size" );
+    }
+  
+  int a = 0;
+  int b = arma_rng::randi<eT>::max_val();
+  
+  param.get_int_vals(a,b);
+  
+  arma_debug_check( (a > b), "randi(): incorrect distribution parameters; a must be less than b" );
+  
+  obj_type out(n_rows, n_cols, arma_nozeros_indicator());
+  
+  arma_rng::randi<eT>::fill(out.memptr(), out.n_elem, a, b);
+  
+  return out;
+  }
+
+
+
+template<typename obj_type>
+arma_warn_unused
+inline
+obj_type
+randi(const SizeMat& s, const distr_param& param = distr_param(), const typename arma_Mat_Col_Row_only<obj_type>::result* junk = nullptr)
+  {
+  arma_extra_debug_sigprint();
+  arma_ignore(junk);
+  
+  return randi<obj_type>(s.n_rows, s.n_cols, param);
+  }
+
+
+
+template<typename obj_type>
+arma_warn_unused
+inline
+obj_type
+randi(const uword n_elem, const distr_param& param = distr_param(), const arma_empty_class junk1 = arma_empty_class(), const typename arma_Mat_Col_Row_only<obj_type>::result* junk2 = nullptr)
+  {
+  arma_extra_debug_sigprint();
+  arma_ignore(junk1);
+  arma_ignore(junk2);
+  
+  if(is_Row<obj_type>::value)
+    {
+    return randi<obj_type>(1, n_elem, param);
+    }
+  else
+    {
+    return randi<obj_type>(n_elem, 1, param);
+    }
+  }
+
+
+
+arma_warn_unused
+inline
+imat
+randi(const uword n_rows, const uword n_cols, const distr_param& param = distr_param())
+  {
+  arma_extra_debug_sigprint();
+  
+  return randi<imat>(n_rows, n_cols, param);
+  }
+
+
+
+arma_warn_unused
+inline
+imat
+randi(const SizeMat& s, const distr_param& param = distr_param())
+  {
+  arma_extra_debug_sigprint();
+  
+  return randi<imat>(s.n_rows, s.n_cols, param);
+  }
+
+
+
+arma_warn_unused
+inline
+ivec
+randi(const uword n_elem, const distr_param& param = distr_param())
+  {
+  arma_extra_debug_sigprint();
+  
+  return randi<ivec>(n_elem, uword(1), param);
+  }
+
+
+
+arma_warn_unused
+inline
+sword
+randi(const distr_param& param)
+  {
+  arma_extra_debug_sigprint();
+  
+  int a = 0;
+  int b = arma_rng::randi<sword>::max_val();
+  
+  param.get_int_vals(a,b);
+  
+  arma_debug_check( (a > b), "randi(): incorrect distribution parameters; a must be less than b" );
+  
+  sword out_val = sword(0);
+  
+  arma_rng::randi<sword>::fill(&out_val, uword(1), a, b);
+  
+  return out_val;
+  }
+
+
+
+template<typename eT>
+arma_warn_unused
+inline
+typename arma_scalar_only<eT>::result
+randi(const distr_param& param)
+  {
+  arma_extra_debug_sigprint();
+  
+  int a = 0;
+  int b = arma_rng::randi<eT>::max_val();
+  
+  param.get_int_vals(a,b);
+  
+  arma_debug_check( (a > b), "randi(): incorrect distribution parameters; a must be less than b" );
+  
+  eT out_val = eT(0);
+  
+  arma_rng::randi<eT>::fill(&out_val, uword(1), a, b);
+  
+  return out_val;
+  }
+
+
+
+arma_warn_unused
+inline
+sword
+randi()
+  {
+  arma_extra_debug_sigprint();
+  
+  return sword( arma_rng::randi<sword>() );
+  }
+
+
+
+template<typename eT>
+arma_warn_unused
+inline
+typename arma_scalar_only<eT>::result
+randi()
+  {
+  arma_extra_debug_sigprint();
+  
+  return eT( arma_rng::randi<eT>() );
+  }
+
+
+
+template<typename cube_type>
+arma_warn_unused
+inline
+cube_type
+randi(const uword n_rows, const uword n_cols, const uword n_slices, const distr_param& param = distr_param(), const typename arma_Cube_only<cube_type>::result* junk = nullptr)
+  {
+  arma_extra_debug_sigprint();
+  arma_ignore(junk);
+  
+  typedef typename cube_type::elem_type eT;
+  
+  int a = 0;
+  int b = arma_rng::randi<eT>::max_val();
+  
+  param.get_int_vals(a,b);
+  
+  arma_debug_check( (a > b), "randi(): incorrect distribution parameters; a must be less than b" );
+  
+  cube_type out(n_rows, n_cols, n_slices, arma_nozeros_indicator());
+  
+  arma_rng::randi<eT>::fill(out.memptr(), out.n_elem, a, b);
+  
+  return out;
+  }
+
+
+
+template<typename cube_type>
+arma_warn_unused
+inline
+cube_type
+randi(const SizeCube& s, const distr_param& param = distr_param(), const typename arma_Cube_only<cube_type>::result* junk = nullptr)
+  {
+  arma_extra_debug_sigprint();
+  arma_ignore(junk);
+  
+  return randi<cube_type>(s.n_rows, s.n_cols, s.n_slices, param);
+  }
+
+
+
+arma_warn_unused
+inline
+icube
+randi(const uword n_rows, const uword n_cols, const uword n_slices, const distr_param& param = distr_param())
+  {
+  arma_extra_debug_sigprint();
+  
+  return randi<icube>(n_rows, n_cols, n_slices, param);
+  }
+
+
+
+arma_warn_unused
+inline
+icube
+randi(const SizeCube& s, const distr_param& param = distr_param())
+  {
+  arma_extra_debug_sigprint();
+  
+  return randi<icube>(s.n_rows, s.n_cols, s.n_slices, param);
+  }
+
+
+
+//! @}