docs: void radb5(final int ido, final int l1, final float in[], final int in_off, final float out[], final int out_off, final int offset) {
  		final float tr11 = 0.309016994374947451262869435595348477f;
  		final float ti11 = 0.951056516295153531181938433292089030f;
  		final float tr12 = -0.809016994374947340240566973079694435f;
  		final float ti12 = 0.587785252292473248125759255344746634f;
  		int i, ic;
  		float ci2, ci3, ci4, ci5, di3, di4, di5, di2, cr2, cr3, cr5, cr4, ti2, ti3, ti4, ti5, dr3, dr4, dr5, dr2, tr2, tr3, tr4, tr5, w1r, w1i, w2r, w2i, w3r, w3i, w4r, w4i;
  		int iw1, iw2, iw3, iw4;
  		iw1 = offset;
  		iw2 = iw1 + ido;
  		iw3 = iw2 + ido;
  		iw4 = iw3 + ido;
  
  		int idx0 = l1 * ido;
  		for (int k = 0; k < l1; k++) {
  			int idx1 = k * ido;
  			int idx2 = 5 * idx1;
  			int idx3 = idx2 + ido;
  			int idx4 = idx3 + ido;
  			int idx5 = idx4 + ido;
  			int idx6 = idx5 + ido;
  			int idx7 = idx1 + idx0;
  			int idx8 = idx7 + idx0;
  			int idx9 = idx8 + idx0;
  			int idx10 = idx9 + idx0;
  			int idx11 = in_off + ido - 1;
  
  			float i1r = in[in_off + idx2];
  
  			ti5 = 2 * in[in_off + idx4];
  			ti4 = 2 * in[in_off + idx6];
  			tr2 = 2 * in[idx11 + idx3];
  			tr3 = 2 * in[idx11 + idx5];
  			cr2 = i1r + tr11 * tr2 + tr12 * tr3;
  			cr3 = i1r + tr12 * tr2 + tr11 * tr3;
  			ci5 = ti11 * ti5 + ti12 * ti4;
  			ci4 = ti12 * ti5 - ti11 * ti4;
  
  			out[out_off + idx1] = i1r + tr2 + tr3;
  			out[out_off + idx7] = cr2 - ci5;
  			out[out_off + idx8] = cr3 - ci4;
  			out[out_off + idx9] = cr3 + ci4;
  			out[out_off + idx10] = cr2 + ci5;
  		}
  		if (ido == 1)
  			return;
  		for (int k = 0; k < l1; ++k) {
  			int idx1 = k * ido;
  			int idx2 = 5 * idx1;
  			int idx3 = idx2 + ido;
  			int idx4 = idx3 + ido;
  			int idx5 = idx4 + ido;
  			int idx6 = idx5 + ido;
  			int idx7 = idx1 + idx0;
  			int idx8 = idx7 + idx0;
  			int idx9 = idx8 + idx0;
  			int idx10 = idx9 + idx0;
  			for (i = 2; i < ido; i += 2) {
  				ic = ido - i;
  				int widx1 = i - 1 + iw1;
  				int widx2 = i - 1 + iw2;
  				int widx3 = i - 1 + iw3;
  				int widx4 = i - 1 + iw4;
  				w1r = wtable_r[widx1 - 1];
  				w1i = wtable_r[widx1];
  				w2r = wtable_r[widx2 - 1];
  				w2i = wtable_r[widx2];
  				w3r = wtable_r[widx3 - 1];
  				w3i = wtable_r[widx3];
  				w4r = wtable_r[widx4 - 1];
  				w4i = wtable_r[widx4];
  
  				int idx15 = in_off + i;
  				int idx16 = in_off + ic;
  				int idx17 = out_off + i;
  
  				int iidx1 = idx15 + idx2;
  				int iidx2 = idx16 + idx3;
  				int iidx3 = idx15 + idx4;
  				int iidx4 = idx16 + idx5;
  				int iidx5 = idx15 + idx6;
  
  				float i1i = in[iidx1 - 1];
  				float i1r = in[iidx1];
  				float i2i = in[iidx2 - 1];
  				float i2r = in[iidx2];
  				float i3i = in[iidx3 - 1];
  				float i3r = in[iidx3];
  				float i4i = in[iidx4 - 1];
  				float i4r = in[iidx4];
  				float i5i = in[iidx5 - 1];
  				float i5r = in[iidx5];
  
  				ti5 = i3r + i2r;
  				ti2 = i3r - i2r;
  				ti4 = i5r + i4r;
  				ti3 = i5r - i4r;
  				tr5 = i3i - i2i;
  				tr2 = i3i + i2i;
  				tr4 = i5i - i4i;
  				tr3 = i5i + i4i;
  
  				cr2 = i1i + tr11 * tr2 + tr12 * tr3;
  				ci2 = i1r + tr11 * ti2 + tr12 * ti3;
  				cr3 = i1i + tr12 * tr2 + tr11 * tr3;
  				ci3 = i1r + tr12 * ti2 + tr11 * ti3;
  				cr5 = ti11 * tr5 + ti12 * tr4;
  				ci5 = ti11 * ti5 + ti12 * ti4;
  				cr4 = ti12 * tr5 - ti11 * tr4;
  				ci4 = ti12 * ti5 - ti11 * ti4;
  				dr3 = cr3 - ci4;
  				dr4 = cr3 + ci4;
  				di3 = ci3 + cr4;
  				di4 = ci3 - cr4;
  				dr5 = cr2 + ci5;
  				dr2 = cr2 - ci5;
  				di5 = ci2 - cr5;
  				di2 = ci2 + cr5;
  
  				int oidx1 = idx17 + idx1;
  				int oidx2 = idx17 + idx7;
  				int oidx3 = idx17 + idx8;
  				int oidx4 = idx17 + idx9;
  				int oidx5 = idx17 + idx10;
  
  				out[oidx1 - 1] = i1i + tr2 + tr3;
  				out[oidx1] = i1r + ti2 + ti3;
  				out[oidx2 - 1] = w1r * dr2 - w1i * di2;
  				out[oidx2] = w1r * di2 + w1i * dr2;
  				out[oidx3 - 1] = w2r * dr3 - w2i * di3;
  				out[oidx3] = w2r * di3 + w2i * dr3;
  				out[oidx4 - 1] = w3r * dr4 - w3i * di4;
  				out[oidx4] = w3r * di4 + w3i * dr4;
  				out[oidx5 - 1] = w4r * dr5 - w4i * di5;
  				out[oidx5] = w4r * di5 + w4i * dr5;
  			}
  		}
  	}