Mercurial > octave-nkf
view examples/fortdemo.cc @ 17091:641c47e8bcae
doc: expand on FFT size argument to fftfilt
* fftfilt.m: Explain how the FFT size argument is used and adjusted
internally to meet certain constraints.
author | Mike Miller <mtmiller@ieee.org> |
---|---|
date | Fri, 26 Jul 2013 01:44:06 -0400 |
parents | be41c30bcb44 |
children | 224e76250443 |
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#include <octave/oct.h> #include <octave/f77-fcn.h> extern "C" { F77_RET_T F77_FUNC (fortsub, FORTSUB) (const int&, double*, F77_CHAR_ARG_DECL F77_CHAR_ARG_LEN_DECL); } DEFUN_DLD (fortdemo, args, , "Fortran Demo") { octave_value_list retval; int nargin = args.length (); if (nargin != 1) print_usage (); else { NDArray a = args(0).array_value (); if (! error_state) { double *av = a.fortran_vec (); octave_idx_type na = a.numel (); OCTAVE_LOCAL_BUFFER (char, ctmp, 128); F77_XFCN (fortsub, FORTSUB, (na, av, ctmp F77_CHAR_ARG_LEN (128))); retval(1) = std::string (ctmp); retval(0) = a; } } return retval; }