WebSVN - shark - Blame - Rev 107 - /shark/trunk/ports/fftw/fftw/fn

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 13:54:28 EDT 1999 */
		22
107	pj	23	#include <fftw-int.h>
		24	#include <fftw.h>
2	pj	25
		26	/* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -notwiddle 13 */
		27
		28	/*
		29	* This function contains 176 FP additions, 68 FP multiplications,
		30	* (or, 138 additions, 30 multiplications, 38 fused multiply/add),
		31	* 50 stack variables, and 52 memory accesses
		32	*/
		33	static const fftw_real K1_732050807 = FFTW_KONST(+1.732050807568877293527446341505872366942805254);
		34	static const fftw_real K256247671 = FFTW_KONST(+0.256247671582936600958684654061725059144125175);
		35	static const fftw_real K156891391 = FFTW_KONST(+0.156891391051584611046832726756003269660212636);
		36	static const fftw_real K300238635 = FFTW_KONST(+0.300238635966332641462884626667381504676006424);
		37	static const fftw_real K011599105 = FFTW_KONST(+0.011599105605768290721655456654083252189827041);
		38	static const fftw_real K174138601 = FFTW_KONST(+0.174138601152135905005660794929264742616964676);
		39	static const fftw_real K575140729 = FFTW_KONST(+0.575140729474003121368385547455453388461001608);
		40	static const fftw_real K2_000000000 = FFTW_KONST(+2.000000000000000000000000000000000000000000000);
		41	static const fftw_real K083333333 = FFTW_KONST(+0.083333333333333333333333333333333333333333333);
		42	static const fftw_real K075902986 = FFTW_KONST(+0.075902986037193865983102897245103540356428373);
		43	static const fftw_real K251768516 = FFTW_KONST(+0.251768516431883313623436926934233488546674281);
		44	static const fftw_real K258260390 = FFTW_KONST(+0.258260390311744861420450644284508567852516811);
		45	static const fftw_real K132983124 = FFTW_KONST(+0.132983124607418643793760531921092974399165133);
		46	static const fftw_real K265966249 = FFTW_KONST(+0.265966249214837287587521063842185948798330267);
		47	static const fftw_real K387390585 = FFTW_KONST(+0.387390585467617292130675966426762851778775217);
		48	static const fftw_real K503537032 = FFTW_KONST(+0.503537032863766627246873853868466977093348562);
		49	static const fftw_real K113854479 = FFTW_KONST(+0.113854479055790798974654345867655310534642560);
		50	static const fftw_real K300462606 = FFTW_KONST(+0.300462606288665774426601772289207995520941381);
		51	static const fftw_real K866025403 = FFTW_KONST(+0.866025403784438646763723170752936183471402627);
		52	static const fftw_real K500000000 = FFTW_KONST(+0.500000000000000000000000000000000000000000000);
		53
		54	/*
		55	* Generator Id's :
107	pj	56	* $Id: fn_13.c,v 1.2 2003-03-24 11:14:50 pj Exp $
		57	* $Id: fn_13.c,v 1.2 2003-03-24 11:14:50 pj Exp $
		58	* $Id: fn_13.c,v 1.2 2003-03-24 11:14:50 pj Exp $
2	pj	59	*/
		60
		61	void fftw_no_twiddle_13(const fftw_complex input, fftw_complex output, int istride, int ostride)
		62	{
		63	fftw_real tmp1;
		64	fftw_real tmp88;
		65	fftw_real tmp29;
		66	fftw_real tmp36;
		67	fftw_real tmp43;
		68	fftw_real tmp121;
		69	fftw_real tmp128;
		70	fftw_real tmp30;
		71	fftw_real tmp24;
		72	fftw_real tmp131;
		73	fftw_real tmp124;
		74	fftw_real tmp129;
		75	fftw_real tmp41;
		76	fftw_real tmp44;
		77	fftw_real tmp134;
		78	fftw_real tmp83;
		79	fftw_real tmp89;
		80	fftw_real tmp70;
		81	fftw_real tmp85;
		82	fftw_real tmp137;
		83	fftw_real tmp141;
		84	fftw_real tmp146;
		85	fftw_real tmp77;
		86	fftw_real tmp86;
		87	fftw_real tmp144;
		88	fftw_real tmp147;
		89	ASSERT_ALIGNED_DOUBLE();
		90	tmp1 = c_re(input[0]);
		91	tmp88 = c_im(input[0]);
		92	{
		93	fftw_real tmp15;
		94	fftw_real tmp25;
		95	fftw_real tmp18;
		96	fftw_real tmp26;
		97	fftw_real tmp21;
		98	fftw_real tmp27;
		99	fftw_real tmp22;
		100	fftw_real tmp28;
		101	fftw_real tmp6;
		102	fftw_real tmp37;
		103	fftw_real tmp33;
		104	fftw_real tmp11;
		105	fftw_real tmp38;
		106	fftw_real tmp34;
		107	fftw_real tmp13;
		108	fftw_real tmp14;
		109	fftw_real tmp12;
		110	fftw_real tmp23;
		111	ASSERT_ALIGNED_DOUBLE();
		112	tmp13 = c_re(input[8 * istride]);
		113	tmp14 = c_re(input[5 * istride]);
		114	tmp15 = tmp13 + tmp14;
		115	tmp25 = tmp13 - tmp14;
		116	{
		117	fftw_real tmp16;
		118	fftw_real tmp17;
		119	fftw_real tmp19;
		120	fftw_real tmp20;
		121	ASSERT_ALIGNED_DOUBLE();
		122	tmp16 = c_re(input[6 * istride]);
		123	tmp17 = c_re(input[11 * istride]);
		124	tmp18 = tmp16 + tmp17;
		125	tmp26 = tmp16 - tmp17;
		126	tmp19 = c_re(input[2 * istride]);
		127	tmp20 = c_re(input[7 * istride]);
		128	tmp21 = tmp19 + tmp20;
		129	tmp27 = tmp19 - tmp20;
		130	}
		131	tmp22 = tmp18 + tmp21;
		132	tmp28 = tmp26 + tmp27;
		133	{
		134	fftw_real tmp2;
		135	fftw_real tmp3;
		136	fftw_real tmp4;
		137	fftw_real tmp5;
		138	ASSERT_ALIGNED_DOUBLE();
		139	tmp2 = c_re(input[istride]);
		140	tmp3 = c_re(input[3 * istride]);
		141	tmp4 = c_re(input[9 * istride]);
		142	tmp5 = tmp3 + tmp4;
		143	tmp6 = tmp2 + tmp5;
		144	tmp37 = tmp2 - (K500000000 * tmp5);
		145	tmp33 = tmp3 - tmp4;
		146	}
		147	{
		148	fftw_real tmp7;
		149	fftw_real tmp8;
		150	fftw_real tmp9;
		151	fftw_real tmp10;
		152	ASSERT_ALIGNED_DOUBLE();
		153	tmp7 = c_re(input[12 * istride]);
		154	tmp8 = c_re(input[4 * istride]);
		155	tmp9 = c_re(input[10 * istride]);
		156	tmp10 = tmp8 + tmp9;
		157	tmp11 = tmp7 + tmp10;
		158	tmp38 = tmp7 - (K500000000 * tmp10);
		159	tmp34 = tmp8 - tmp9;
		160	}
		161	tmp29 = tmp25 - tmp28;
		162	{
		163	fftw_real tmp32;
		164	fftw_real tmp35;
		165	fftw_real tmp119;
		166	fftw_real tmp120;
		167	ASSERT_ALIGNED_DOUBLE();
		168	tmp32 = tmp25 + (K500000000 * tmp28);
		169	tmp35 = K866025403 * (tmp33 + tmp34);
		170	tmp36 = tmp32 - tmp35;
		171	tmp43 = tmp35 + tmp32;
		172	tmp119 = tmp33 - tmp34;
		173	tmp120 = tmp27 - tmp26;
		174	tmp121 = tmp119 + tmp120;
		175	tmp128 = tmp120 - tmp119;
		176	}
		177	tmp30 = tmp6 - tmp11;
		178	tmp12 = tmp6 + tmp11;
		179	tmp23 = tmp15 + tmp22;
		180	tmp24 = tmp12 + tmp23;
		181	tmp131 = K300462606 * (tmp12 - tmp23);
		182	{
		183	fftw_real tmp122;
		184	fftw_real tmp123;
		185	fftw_real tmp39;
		186	fftw_real tmp40;
		187	ASSERT_ALIGNED_DOUBLE();
		188	tmp122 = tmp37 + tmp38;
		189	tmp123 = tmp15 - (K500000000 * tmp22);
		190	tmp124 = tmp122 + tmp123;
		191	tmp129 = tmp122 - tmp123;
		192	tmp39 = tmp37 - tmp38;
		193	tmp40 = K866025403 * (tmp18 - tmp21);
		194	tmp41 = tmp39 + tmp40;
		195	tmp44 = tmp39 - tmp40;
		196	}
		197	}
		198	{
		199	fftw_real tmp61;
		200	fftw_real tmp135;
		201	fftw_real tmp64;
		202	fftw_real tmp71;
		203	fftw_real tmp67;
		204	fftw_real tmp72;
		205	fftw_real tmp68;
		206	fftw_real tmp136;
		207	fftw_real tmp52;
		208	fftw_real tmp79;
		209	fftw_real tmp75;
		210	fftw_real tmp57;
		211	fftw_real tmp80;
		212	fftw_real tmp74;
		213	fftw_real tmp59;
		214	fftw_real tmp60;
		215	fftw_real tmp139;
		216	fftw_real tmp140;
		217	ASSERT_ALIGNED_DOUBLE();
		218	tmp59 = c_im(input[8 * istride]);
		219	tmp60 = c_im(input[5 * istride]);
		220	tmp61 = tmp59 + tmp60;
		221	tmp135 = tmp59 - tmp60;
		222	{
		223	fftw_real tmp62;
		224	fftw_real tmp63;
		225	fftw_real tmp65;
		226	fftw_real tmp66;
		227	ASSERT_ALIGNED_DOUBLE();
		228	tmp62 = c_im(input[6 * istride]);
		229	tmp63 = c_im(input[11 * istride]);
		230	tmp64 = tmp62 + tmp63;
		231	tmp71 = tmp62 - tmp63;
		232	tmp65 = c_im(input[2 * istride]);
		233	tmp66 = c_im(input[7 * istride]);
		234	tmp67 = tmp65 + tmp66;
		235	tmp72 = tmp65 - tmp66;
		236	}
		237	tmp68 = tmp64 + tmp67;
		238	tmp136 = tmp71 + tmp72;
		239	{
		240	fftw_real tmp48;
		241	fftw_real tmp49;
		242	fftw_real tmp50;
		243	fftw_real tmp51;
		244	ASSERT_ALIGNED_DOUBLE();
		245	tmp48 = c_im(input[istride]);
		246	tmp49 = c_im(input[3 * istride]);
		247	tmp50 = c_im(input[9 * istride]);
		248	tmp51 = tmp49 + tmp50;
		249	tmp52 = tmp48 - (K500000000 * tmp51);
		250	tmp79 = tmp48 + tmp51;
		251	tmp75 = tmp49 - tmp50;
		252	}
		253	{
		254	fftw_real tmp53;
		255	fftw_real tmp54;
		256	fftw_real tmp55;
		257	fftw_real tmp56;
		258	ASSERT_ALIGNED_DOUBLE();
		259	tmp53 = c_im(input[12 * istride]);
		260	tmp54 = c_im(input[4 * istride]);
		261	tmp55 = c_im(input[10 * istride]);
		262	tmp56 = tmp54 + tmp55;
		263	tmp57 = tmp53 - (K500000000 * tmp56);
		264	tmp80 = tmp53 + tmp56;
		265	tmp74 = tmp54 - tmp55;
		266	}
		267	tmp134 = tmp79 - tmp80;
		268	{
		269	fftw_real tmp81;
		270	fftw_real tmp82;
		271	fftw_real tmp58;
		272	fftw_real tmp69;
		273	ASSERT_ALIGNED_DOUBLE();
		274	tmp81 = tmp79 + tmp80;
		275	tmp82 = tmp61 + tmp68;
		276	tmp83 = K300462606 * (tmp81 - tmp82);
		277	tmp89 = tmp81 + tmp82;
		278	tmp58 = tmp52 + tmp57;
		279	tmp69 = tmp61 - (K500000000 * tmp68);
		280	tmp70 = tmp58 - tmp69;
		281	tmp85 = tmp58 + tmp69;
		282	}
		283	tmp137 = tmp135 - tmp136;
		284	tmp139 = K866025403 * (tmp75 + tmp74);
		285	tmp140 = tmp135 + (K500000000 * tmp136);
		286	tmp141 = tmp139 - tmp140;
		287	tmp146 = tmp139 + tmp140;
		288	{
		289	fftw_real tmp73;
		290	fftw_real tmp76;
		291	fftw_real tmp142;
		292	fftw_real tmp143;
		293	ASSERT_ALIGNED_DOUBLE();
		294	tmp73 = tmp71 - tmp72;
		295	tmp76 = tmp74 - tmp75;
		296	tmp77 = tmp73 - tmp76;
		297	tmp86 = tmp76 + tmp73;
		298	tmp142 = tmp52 - tmp57;
		299	tmp143 = K866025403 * (tmp67 - tmp64);
		300	tmp144 = tmp142 - tmp143;
		301	tmp147 = tmp142 + tmp143;
		302	}
		303	}
		304	c_re(output[0]) = tmp1 + tmp24;
		305	{
		306	fftw_real tmp163;
		307	fftw_real tmp173;
		308	fftw_real tmp127;
		309	fftw_real tmp169;
		310	fftw_real tmp153;
		311	fftw_real tmp132;
		312	fftw_real tmp138;
		313	fftw_real tmp149;
		314	fftw_real tmp160;
		315	fftw_real tmp172;
		316	fftw_real tmp154;
		317	fftw_real tmp157;
		318	fftw_real tmp158;
		319	fftw_real tmp170;
		320	fftw_real tmp161;
		321	fftw_real tmp162;
		322	ASSERT_ALIGNED_DOUBLE();
		323	tmp161 = (K113854479 * tmp121) - (K503537032 * tmp124);
		324	tmp162 = (K387390585 * tmp128) - (K265966249 * tmp129);
		325	tmp163 = tmp161 - tmp162;
		326	tmp173 = tmp162 + tmp161;
		327	{
		328	fftw_real tmp130;
		329	fftw_real tmp151;
		330	fftw_real tmp125;
		331	fftw_real tmp126;
		332	fftw_real tmp152;
		333	ASSERT_ALIGNED_DOUBLE();
		334	tmp130 = (K132983124 * tmp128) + (K258260390 * tmp129);
		335	tmp151 = tmp131 - tmp130;
		336	tmp125 = (K251768516 * tmp121) + (K075902986 * tmp124);
		337	tmp126 = tmp1 - (K083333333 * tmp24);
		338	tmp152 = tmp126 - tmp125;
		339	tmp127 = (K2_000000000 * tmp125) + tmp126;
		340	tmp169 = tmp152 - tmp151;
		341	tmp153 = tmp151 + tmp152;
		342	tmp132 = (K2_000000000 * tmp130) + tmp131;
		343	}
		344	{
		345	fftw_real tmp145;
		346	fftw_real tmp148;
		347	fftw_real tmp155;
		348	fftw_real tmp156;
		349	ASSERT_ALIGNED_DOUBLE();
		350	tmp138 = (K575140729 * tmp134) + (K174138601 * tmp137);
		351	tmp145 = (K011599105 * tmp141) + (K300238635 * tmp144);
		352	tmp148 = (K156891391 * tmp146) - (K256247671 * tmp147);
		353	tmp149 = tmp145 + tmp148;
		354	tmp160 = K1_732050807 * (tmp148 - tmp145);
		355	tmp172 = tmp149 - tmp138;
		356	tmp154 = (K174138601 * tmp134) - (K575140729 * tmp137);
		357	tmp155 = (K300238635 * tmp141) - (K011599105 * tmp144);
		358	tmp156 = (K256247671 * tmp146) + (K156891391 * tmp147);
		359	tmp157 = tmp155 + tmp156;
		360	tmp158 = tmp154 - tmp157;
		361	tmp170 = K1_732050807 * (tmp156 - tmp155);
		362	}
		363	{
		364	fftw_real tmp133;
		365	fftw_real tmp150;
		366	fftw_real tmp165;
		367	fftw_real tmp166;
		368	ASSERT_ALIGNED_DOUBLE();
		369	tmp133 = tmp127 - tmp132;
		370	tmp150 = tmp138 + (K2_000000000 * tmp149);
		371	c_re(output[8 * ostride]) = tmp133 - tmp150;
		372	c_re(output[5 * ostride]) = tmp133 + tmp150;
		373	{
		374	fftw_real tmp167;
		375	fftw_real tmp168;
		376	fftw_real tmp159;
		377	fftw_real tmp164;
		378	ASSERT_ALIGNED_DOUBLE();
		379	tmp167 = tmp132 + tmp127;
		380	tmp168 = tmp154 + (K2_000000000 * tmp157);
		381	c_re(output[12 * ostride]) = tmp167 - tmp168;
		382	c_re(output[ostride]) = tmp167 + tmp168;
		383	tmp159 = tmp153 - tmp158;
		384	tmp164 = tmp160 - tmp163;
		385	c_re(output[4 * ostride]) = tmp159 - tmp164;
		386	c_re(output[10 * ostride]) = tmp164 + tmp159;
		387	}
		388	tmp165 = tmp153 + tmp158;
		389	tmp166 = tmp163 + tmp160;
		390	c_re(output[3 * ostride]) = tmp165 - tmp166;
		391	c_re(output[9 * ostride]) = tmp166 + tmp165;
		392	{
		393	fftw_real tmp175;
		394	fftw_real tmp176;
		395	fftw_real tmp171;
		396	fftw_real tmp174;
		397	ASSERT_ALIGNED_DOUBLE();
		398	tmp175 = tmp169 + tmp170;
		399	tmp176 = tmp173 + tmp172;
		400	c_re(output[2 * ostride]) = tmp175 - tmp176;
		401	c_re(output[7 * ostride]) = tmp176 + tmp175;
		402	tmp171 = tmp169 - tmp170;
		403	tmp174 = tmp172 - tmp173;
		404	c_re(output[6 * ostride]) = tmp171 - tmp174;
		405	c_re(output[11 * ostride]) = tmp174 + tmp171;
		406	}
		407	}
		408	}
		409	c_im(output[0]) = tmp88 + tmp89;
		410	{
		411	fftw_real tmp102;
		412	fftw_real tmp115;
		413	fftw_real tmp84;
		414	fftw_real tmp112;
		415	fftw_real tmp106;
		416	fftw_real tmp91;
		417	fftw_real tmp31;
		418	fftw_real tmp46;
		419	fftw_real tmp107;
		420	fftw_real tmp111;
		421	fftw_real tmp94;
		422	fftw_real tmp97;
		423	fftw_real tmp99;
		424	fftw_real tmp114;
		425	fftw_real tmp100;
		426	fftw_real tmp101;
		427	ASSERT_ALIGNED_DOUBLE();
		428	tmp100 = (K387390585 * tmp77) + (K265966249 * tmp70);
		429	tmp101 = (K113854479 * tmp86) + (K503537032 * tmp85);
		430	tmp102 = tmp100 + tmp101;
		431	tmp115 = tmp100 - tmp101;
		432	{
		433	fftw_real tmp78;
		434	fftw_real tmp105;
		435	fftw_real tmp87;
		436	fftw_real tmp90;
		437	fftw_real tmp104;
		438	ASSERT_ALIGNED_DOUBLE();
		439	tmp78 = (K258260390 * tmp70) - (K132983124 * tmp77);
		440	tmp105 = tmp83 - tmp78;
		441	tmp87 = (K075902986 * tmp85) - (K251768516 * tmp86);
		442	tmp90 = tmp88 - (K083333333 * tmp89);
		443	tmp104 = tmp90 - tmp87;
		444	tmp84 = (K2_000000000 * tmp78) + tmp83;
		445	tmp112 = tmp105 + tmp104;
		446	tmp106 = tmp104 - tmp105;
		447	tmp91 = (K2_000000000 * tmp87) + tmp90;
		448	}
		449	{
		450	fftw_real tmp42;
		451	fftw_real tmp45;
		452	fftw_real tmp95;
		453	fftw_real tmp96;
		454	ASSERT_ALIGNED_DOUBLE();
		455	tmp31 = (K575140729 * tmp29) - (K174138601 * tmp30);
		456	tmp42 = (K300238635 * tmp36) + (K011599105 * tmp41);
		457	tmp45 = (K256247671 * tmp43) + (K156891391 * tmp44);
		458	tmp46 = tmp42 - tmp45;
		459	tmp107 = K1_732050807 * (tmp45 + tmp42);
		460	tmp111 = tmp31 - tmp46;
		461	tmp94 = (K575140729 * tmp30) + (K174138601 * tmp29);
		462	tmp95 = (K156891391 * tmp43) - (K256247671 * tmp44);
		463	tmp96 = (K300238635 * tmp41) - (K011599105 * tmp36);
		464	tmp97 = tmp95 + tmp96;
		465	tmp99 = tmp97 - tmp94;
		466	tmp114 = K1_732050807 * (tmp96 - tmp95);
		467	}
		468	{
		469	fftw_real tmp47;
		470	fftw_real tmp92;
		471	fftw_real tmp109;
		472	fftw_real tmp110;
		473	ASSERT_ALIGNED_DOUBLE();
		474	tmp47 = tmp31 + (K2_000000000 * tmp46);
		475	tmp92 = tmp84 + tmp91;
		476	c_im(output[ostride]) = tmp47 + tmp92;
		477	c_im(output[12 * ostride]) = tmp92 - tmp47;
		478	{
		479	fftw_real tmp93;
		480	fftw_real tmp98;
		481	fftw_real tmp103;
		482	fftw_real tmp108;
		483	ASSERT_ALIGNED_DOUBLE();
		484	tmp93 = tmp91 - tmp84;
		485	tmp98 = tmp94 + (K2_000000000 * tmp97);
		486	c_im(output[5 * ostride]) = tmp93 - tmp98;
		487	c_im(output[8 * ostride]) = tmp98 + tmp93;
		488	tmp103 = tmp99 + tmp102;
		489	tmp108 = tmp106 - tmp107;
		490	c_im(output[2 * ostride]) = tmp103 + tmp108;
		491	c_im(output[7 * ostride]) = tmp108 - tmp103;
		492	}
		493	tmp109 = tmp107 + tmp106;
		494	tmp110 = tmp102 - tmp99;
		495	c_im(output[6 * ostride]) = tmp109 - tmp110;
		496	c_im(output[11 * ostride]) = tmp110 + tmp109;
		497	{
		498	fftw_real tmp117;
		499	fftw_real tmp118;
		500	fftw_real tmp113;
		501	fftw_real tmp116;
		502	ASSERT_ALIGNED_DOUBLE();
		503	tmp117 = tmp112 - tmp111;
		504	tmp118 = tmp114 - tmp115;
		505	c_im(output[4 * ostride]) = tmp117 - tmp118;
		506	c_im(output[10 * ostride]) = tmp118 + tmp117;
		507	tmp113 = tmp111 + tmp112;
		508	tmp116 = tmp114 + tmp115;
		509	c_im(output[3 * ostride]) = tmp113 - tmp116;
		510	c_im(output[9 * ostride]) = tmp116 + tmp113;
		511	}
		512	}
		513	}
		514	}
		515
		516	fftw_codelet_desc fftw_no_twiddle_13_desc =
		517	{
		518	"fftw_no_twiddle_13",
		519	(void (*)()) fftw_no_twiddle_13,
		520	13,
		521	FFTW_FORWARD,
		522	FFTW_NOTW,
		523	287,
		524	0,
		525	(const int *) 0,
		526	};

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(root)/shark/trunk/ports/fftw/fftw/fn_13.c @ 1620 - Rev 107