WebSVN - shark - Blame - Rev 2 - /shark/branches/pj/ports/fftw/rfftw/fhb

Rev	Author	Line No.	Line
2	pj	1	/*
		2	* Copyright (c) 1997-1999 Massachusetts Institute of Technology
		3	*
		4	* This program is free software; you can redistribute it and/or modify
		5	* it under the terms of the GNU General Public License as published by
		6	* the Free Software Foundation; either version 2 of the License, or
		7	* (at your option) any later version.
		8	*
		9	* This program is distributed in the hope that it will be useful,
		10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
		11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		12	* GNU General Public License for more details.
		13	*
		14	* You should have received a copy of the GNU General Public License
		15	* along with this program; if not, write to the Free Software
		16	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
		17	*
		18	*/
		19
		20	/* This file was automatically generated --- DO NOT EDIT */
		21	/* Generated on Tue May 18 13:55:59 EDT 1999 */
		22
		23	#include <ports/fftw-int.h>
		24	#include <ports/fftw.h>
		25
		26	/* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -hc2hc-backward 5 */
		27
		28	/*
		29	* This function contains 64 FP additions, 42 FP multiplications,
		30	* (or, 42 additions, 20 multiplications, 22 fused multiply/add),
		31	* 25 stack variables, and 40 memory accesses
		32	*/
		33	static const fftw_real K250000000 = FFTW_KONST(+0.250000000000000000000000000000000000000000000);
		34	static const fftw_real K559016994 = FFTW_KONST(+0.559016994374947424102293417182819058860154590);
		35	static const fftw_real K951056516 = FFTW_KONST(+0.951056516295153572116439333379382143405698634);
		36	static const fftw_real K587785252 = FFTW_KONST(+0.587785252292473129168705954639072768597652438);
		37	static const fftw_real K2_000000000 = FFTW_KONST(+2.000000000000000000000000000000000000000000000);
		38	static const fftw_real K500000000 = FFTW_KONST(+0.500000000000000000000000000000000000000000000);
		39	static const fftw_real K1_118033988 = FFTW_KONST(+1.118033988749894848204586834365638117720309180);
		40	static const fftw_real K1_175570504 = FFTW_KONST(+1.175570504584946258337411909278145537195304875);
		41	static const fftw_real K1_902113032 = FFTW_KONST(+1.902113032590307144232878666758764286811397268);
		42
		43	/*
		44	* Generator Id's :
		45	* $Id: fhb_5.c,v 1.1.1.1 2002-03-29 14:12:58 pj Exp $
		46	* $Id: fhb_5.c,v 1.1.1.1 2002-03-29 14:12:58 pj Exp $
		47	* $Id: fhb_5.c,v 1.1.1.1 2002-03-29 14:12:58 pj Exp $
		48	*/
		49
		50	void fftw_hc2hc_backward_5(fftw_real A, const fftw_complex W, int iostride, int m, int dist)
		51	{
		52	int i;
		53	fftw_real *X;
		54	fftw_real *Y;
		55	X = A;
		56	Y = A + (5 * iostride);
		57	{
		58	fftw_real tmp70;
		59	fftw_real tmp72;
		60	fftw_real tmp61;
		61	fftw_real tmp64;
		62	fftw_real tmp65;
		63	fftw_real tmp66;
		64	fftw_real tmp71;
		65	fftw_real tmp67;
		66	ASSERT_ALIGNED_DOUBLE();
		67	{
		68	fftw_real tmp68;
		69	fftw_real tmp69;
		70	fftw_real tmp62;
		71	fftw_real tmp63;
		72	ASSERT_ALIGNED_DOUBLE();
		73	tmp68 = Y[-iostride];
		74	tmp69 = Y[-2 * iostride];
		75	tmp70 = (K1_902113032 * tmp68) + (K1_175570504 * tmp69);
		76	tmp72 = (K1_902113032 * tmp69) - (K1_175570504 * tmp68);
		77	tmp61 = X[0];
		78	tmp62 = X[iostride];
		79	tmp63 = X[2 * iostride];
		80	tmp64 = tmp62 + tmp63;
		81	tmp65 = K1_118033988 * (tmp62 - tmp63);
		82	tmp66 = tmp61 - (K500000000 * tmp64);
		83	}
		84	X[0] = tmp61 + (K2_000000000 * tmp64);
		85	tmp71 = tmp66 - tmp65;
		86	X[3 * iostride] = tmp71 - tmp72;
		87	X[2 * iostride] = tmp71 + tmp72;
		88	tmp67 = tmp65 + tmp66;
		89	X[4 * iostride] = tmp67 + tmp70;
		90	X[iostride] = tmp67 - tmp70;
		91	}
		92	X = X + dist;
		93	Y = Y - dist;
		94	for (i = 2; i < m; i = i + 2, X = X + dist, Y = Y - dist, W = W + 4) {
		95	fftw_real tmp13;
		96	fftw_real tmp32;
		97	fftw_real tmp50;
		98	fftw_real tmp39;
		99	fftw_real tmp20;
		100	fftw_real tmp38;
		101	fftw_real tmp21;
		102	fftw_real tmp34;
		103	fftw_real tmp28;
		104	fftw_real tmp33;
		105	fftw_real tmp43;
		106	fftw_real tmp55;
		107	ASSERT_ALIGNED_DOUBLE();
		108	{
		109	fftw_real tmp19;
		110	fftw_real tmp31;
		111	fftw_real tmp16;
		112	fftw_real tmp30;
		113	ASSERT_ALIGNED_DOUBLE();
		114	tmp13 = X[0];
		115	{
		116	fftw_real tmp17;
		117	fftw_real tmp18;
		118	fftw_real tmp14;
		119	fftw_real tmp15;
		120	ASSERT_ALIGNED_DOUBLE();
		121	tmp17 = X[2 * iostride];
		122	tmp18 = Y[-3 * iostride];
		123	tmp19 = tmp17 + tmp18;
		124	tmp31 = tmp17 - tmp18;
		125	tmp14 = X[iostride];
		126	tmp15 = Y[-4 * iostride];
		127	tmp16 = tmp14 + tmp15;
		128	tmp30 = tmp14 - tmp15;
		129	}
		130	tmp32 = (K587785252 * tmp30) - (K951056516 * tmp31);
		131	tmp50 = (K951056516 * tmp30) + (K587785252 * tmp31);
		132	tmp39 = K559016994 * (tmp16 - tmp19);
		133	tmp20 = tmp16 + tmp19;
		134	tmp38 = tmp13 - (K250000000 * tmp20);
		135	}
		136	{
		137	fftw_real tmp27;
		138	fftw_real tmp42;
		139	fftw_real tmp24;
		140	fftw_real tmp41;
		141	ASSERT_ALIGNED_DOUBLE();
		142	tmp21 = Y[0];
		143	{
		144	fftw_real tmp25;
		145	fftw_real tmp26;
		146	fftw_real tmp22;
		147	fftw_real tmp23;
		148	ASSERT_ALIGNED_DOUBLE();
		149	tmp25 = Y[-2 * iostride];
		150	tmp26 = X[3 * iostride];
		151	tmp27 = tmp25 - tmp26;
		152	tmp42 = tmp25 + tmp26;
		153	tmp22 = Y[-iostride];
		154	tmp23 = X[4 * iostride];
		155	tmp24 = tmp22 - tmp23;
		156	tmp41 = tmp22 + tmp23;
		157	}
		158	tmp34 = K559016994 * (tmp24 - tmp27);
		159	tmp28 = tmp24 + tmp27;
		160	tmp33 = tmp21 - (K250000000 * tmp28);
		161	tmp43 = (K587785252 * tmp41) - (K951056516 * tmp42);
		162	tmp55 = (K951056516 * tmp41) + (K587785252 * tmp42);
		163	}
		164	X[0] = tmp13 + tmp20;
		165	{
		166	fftw_real tmp52;
		167	fftw_real tmp58;
		168	fftw_real tmp56;
		169	fftw_real tmp60;
		170	fftw_real tmp51;
		171	fftw_real tmp54;
		172	ASSERT_ALIGNED_DOUBLE();
		173	tmp51 = tmp34 + tmp33;
		174	tmp52 = tmp50 + tmp51;
		175	tmp58 = tmp51 - tmp50;
		176	tmp54 = tmp39 + tmp38;
		177	tmp56 = tmp54 - tmp55;
		178	tmp60 = tmp54 + tmp55;
		179	{
		180	fftw_real tmp49;
		181	fftw_real tmp53;
		182	fftw_real tmp57;
		183	fftw_real tmp59;
		184	ASSERT_ALIGNED_DOUBLE();
		185	tmp49 = c_re(W[0]);
		186	tmp53 = c_im(W[0]);
		187	Y[-3 * iostride] = (tmp49 * tmp52) - (tmp53 * tmp56);
		188	X[iostride] = (tmp53 * tmp52) + (tmp49 * tmp56);
		189	tmp57 = c_re(W[3]);
		190	tmp59 = c_im(W[3]);
		191	Y[0] = (tmp57 * tmp58) - (tmp59 * tmp60);
		192	X[4 * iostride] = (tmp59 * tmp58) + (tmp57 * tmp60);
		193	}
		194	}
		195	Y[-4 * iostride] = tmp21 + tmp28;
		196	{
		197	fftw_real tmp36;
		198	fftw_real tmp46;
		199	fftw_real tmp44;
		200	fftw_real tmp48;
		201	fftw_real tmp35;
		202	fftw_real tmp40;
		203	ASSERT_ALIGNED_DOUBLE();
		204	tmp35 = tmp33 - tmp34;
		205	tmp36 = tmp32 + tmp35;
		206	tmp46 = tmp35 - tmp32;
		207	tmp40 = tmp38 - tmp39;
		208	tmp44 = tmp40 - tmp43;
		209	tmp48 = tmp40 + tmp43;
		210	{
		211	fftw_real tmp29;
		212	fftw_real tmp37;
		213	fftw_real tmp45;
		214	fftw_real tmp47;
		215	ASSERT_ALIGNED_DOUBLE();
		216	tmp29 = c_re(W[1]);
		217	tmp37 = c_im(W[1]);
		218	Y[-2 * iostride] = (tmp29 * tmp36) - (tmp37 * tmp44);
		219	X[2 * iostride] = (tmp37 * tmp36) + (tmp29 * tmp44);
		220	tmp45 = c_re(W[2]);
		221	tmp47 = c_im(W[2]);
		222	Y[-iostride] = (tmp45 * tmp46) - (tmp47 * tmp48);
		223	X[3 * iostride] = (tmp47 * tmp46) + (tmp45 * tmp48);
		224	}
		225	}
		226	}
		227	if (i == m) {
		228	fftw_real tmp10;
		229	fftw_real tmp12;
		230	fftw_real tmp1;
		231	fftw_real tmp4;
		232	fftw_real tmp5;
		233	fftw_real tmp6;
		234	fftw_real tmp11;
		235	fftw_real tmp7;
		236	ASSERT_ALIGNED_DOUBLE();
		237	{
		238	fftw_real tmp8;
		239	fftw_real tmp9;
		240	fftw_real tmp2;
		241	fftw_real tmp3;
		242	ASSERT_ALIGNED_DOUBLE();
		243	tmp8 = Y[-iostride];
		244	tmp9 = Y[0];
		245	tmp10 = (K1_902113032 * tmp8) + (K1_175570504 * tmp9);
		246	tmp12 = (K1_175570504 * tmp8) - (K1_902113032 * tmp9);
		247	tmp1 = X[2 * iostride];
		248	tmp2 = X[iostride];
		249	tmp3 = X[0];
		250	tmp4 = tmp2 + tmp3;
		251	tmp5 = (K500000000 * tmp4) - tmp1;
		252	tmp6 = K1_118033988 * (tmp3 - tmp2);
		253	}
		254	X[0] = tmp1 + (K2_000000000 * tmp4);
		255	tmp11 = tmp6 - tmp5;
		256	X[2 * iostride] = tmp11 + tmp12;
		257	X[3 * iostride] = tmp12 - tmp11;
		258	tmp7 = tmp5 + tmp6;
		259	X[iostride] = tmp7 - tmp10;
		260	X[4 * iostride] = -(tmp7 + tmp10);
		261	}
		262	}
		263
		264	static const int twiddle_order[] =
		265	{1, 2, 3, 4};
		266	fftw_codelet_desc fftw_hc2hc_backward_5_desc =
		267	{
		268	"fftw_hc2hc_backward_5",
		269	(void (*)()) fftw_hc2hc_backward_5,
		270	5,
		271	FFTW_BACKWARD,
		272	FFTW_HC2HC,
		273	124,
		274	4,
		275	twiddle_order,
		276	};

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