R2C变换
kml_fft(f)_plan_dft_r2c
kml_fft(f)_plan_dft_r2c_1d
kml_fft(f)_plan_dft_r2c_2d
kml_fft(f)_plan_dft_r2c_3d
kml_fft(f)_plan_guru_dft_r2c
kml_fft(f)_plan_guru_split_dft_r2c
kml_fft(f)_plan_guru64_dft_r2c
kml_fft(f)_plan_guru64_split_dft_r2c
kml_fft(f)_plan_many_dft_r2c
父主题：
函数定义