mirror of https://gitlab.com/QEF/q-e.git
53 lines
1.8 KiB
Fortran
53 lines
1.8 KiB
Fortran
!
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! Copyright (C) Quantum ESPRESSO group
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!
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! This file is distributed under the terms of the
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! GNU General Public License. See the file `License'
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! in the root directory of the present distribution,
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! or http://www.gnu.org/copyleft/gpl.txt .
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!
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!--------------------------------------------------------------------------!
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! FFT scalar drivers Module - contains machine-dependent routines for !
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! internal FFTW, FFTW v.3, IBM ESSL, Intel DFTI, ARMlib !
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! (both 3d for serial execution and 1d+2d FFTs for parallel execution); !
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! legacy NEC ASL libraries (3d only, no parallel execution) !
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! Written by Carlo Cavazzoni, modified by P. Giannozzi, contributions !
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! by Martin Hilgemans, Guido Roma, Pascal Thibaudeau, Stephane Lefranc, !
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! Nicolas Lacorne, Filippo Spiga, Nicola Varini, Jason Wood !
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! Last update Oct 2017 !
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!--------------------------------------------------------------------------!
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!=----------------------------------------------------------------------=!
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MODULE fft_scalar
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!=----------------------------------------------------------------------=!
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USE fft_param
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#if defined(__FFTW3)
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USE fft_scalar_fftw3
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#elif defined(__DFTI)
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USE fft_scalar_dfti
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#elif defined(__LINUX_ESSL)
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USE fft_scalar_essl
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#elif defined(__SX6)
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USE fft_scalar_sx6
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#elif defined(__ARM_LIB)
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USE fft_scalar_arm
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#elif defined(__FFTW)
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USE fft_scalar_fftw
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#else
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#error No fft_scalar backend selected!
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#endif
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#if defined(__CUDA)
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USE fft_scalar_cuFFT
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#endif
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IMPLICIT NONE
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SAVE
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PRIVATE
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PUBLIC :: cft_1z, cft_2xy, cfft3d, cfft3ds
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#if defined(__CUDA)
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PUBLIC :: cft_1z_gpu, cft_2xy_gpu, cfft3d_gpu, cfft3ds_gpu
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#endif
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END MODULE fft_scalar
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