C2R变换
kml_fft(f)_plan_dft_c2r
kml_fft(f)_plan_dft_c2r_1d
kml_fft(f)_plan_dft_c2r_2d
kml_fft(f)_plan_dft_c2r_3d
kml_fft(f)_plan_guru_dft_c2r
kml_fft(f)_plan_guru_split_dft_c2r
kml_fft(f)_plan_guru64_dft_c2r
kml_fft(f)_plan_guru64_split_dft_c2r
kml_fft(f)_plan_many_dft_c2r
父主题：
函数定义