view armadillo-3.900.4/include/armadillo_bits/fn_fft.hpp @ 49:1ec0e2823891

Switch to using subrepo copies of qm-dsp, nnls-chroma, vamp-plugin-sdk; update Armadillo version; assume build without external BLAS/LAPACK

// Copyright (C) 2013 Conrad Sanderson
// Copyright (C) 2013 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_fft
//! @{



// TODO:  fft(real)     -> complex [to be tested thoroughly]
// TODO:  fft(complex)  -> complex [to be tested thoroughly]
// TODO: ifft(complex)  -> complex [to be tested thoroughly]


template<typename T1>
inline
typename
enable_if2
  <
  (is_arma_type<T1>::value && is_real<typename T1::elem_type>::value),
  const mtOp<std::complex<typename T1::pod_type>, T1, op_fft_real>
  >::result
fft(const T1& A)
  {
  arma_extra_debug_sigprint();
  
  return mtOp<std::complex<typename T1::pod_type>, T1, op_fft_real>(A, uword(0), uword(1));
  }



template<typename T1>
inline
typename
enable_if2
  <
  (is_arma_type<T1>::value && is_real<typename T1::elem_type>::value),
  const mtOp<std::complex<typename T1::pod_type>, T1, op_fft_real>
  >::result
fft(const T1& A, const uword N)
  {
  arma_extra_debug_sigprint();
  
  return mtOp<std::complex<typename T1::pod_type>, T1, op_fft_real>(A, N, uword(0));
  }



template<typename T1>
inline
typename
enable_if2
  <
  (is_arma_type<T1>::value && is_complex_strict<typename T1::elem_type>::value),
  const Op<T1, op_fft_cx>
  >::result
fft(const T1& A)
  {
  arma_extra_debug_sigprint();
  
  return Op<T1, op_fft_cx>(A, uword(0), uword(1));
  }



template<typename T1>
inline
typename
enable_if2
  <
  (is_arma_type<T1>::value && is_complex_strict<typename T1::elem_type>::value),
  const Op<T1, op_fft_cx>
  >::result
fft(const T1& A, const uword N)
  {
  arma_extra_debug_sigprint();
  
  return Op<T1, op_fft_cx>(A, N, uword(0));
  }



template<typename T1>
inline
typename
enable_if2
  <
  (is_arma_type<T1>::value && is_complex_strict<typename T1::elem_type>::value),
  const Op<T1, op_ifft_cx>
  >::result
ifft(const T1& A)
  {
  arma_extra_debug_sigprint();
  
  return Op<T1, op_ifft_cx>(A, uword(0), uword(1));
  }



template<typename T1>
inline
typename
enable_if2
  <
  (is_arma_type<T1>::value && is_complex_strict<typename T1::elem_type>::value),
  const Op<T1, op_ifft_cx>
  >::result
ifft(const T1& A, const uword N)
  {
  arma_extra_debug_sigprint();
  
  return Op<T1, op_ifft_cx>(A, N, uword(0));
  }



//! @}