RealDFT          1468 modules/core/src/dxt.cpp     RealDFT( src, dst, n, nf, factors, itab, wave, tab_size, spec, buf, flags, scale);
RealDFT          1475 modules/core/src/dxt.cpp     RealDFT( src, dst, n, nf, factors, itab, wave, tab_size, spec, buf, flags, scale);
RealDFT          3145 modules/core/src/dxt.cpp     RealDFT( dft_src, dft_dst, n, nf, factors,