ref: 4f9a9087f16b92662389be3dc0589629359ac8a4
dir: /libfaad/fftw/fni_16.c/
/*
* Copyright (c) 1997-1999 Massachusetts Institute of Technology
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/* This file was automatically generated --- DO NOT EDIT */
/* Generated on Sun Nov 7 20:44:15 EST 1999 */
#include <fftw-int.h>
#include <fftw.h>
/* Generated by: ./genfft -magic-alignment-check -magic-twiddle-load-all -magic-variables 4 -magic-loopi -notwiddleinv 16 */
/*
* This function contains 144 FP additions, 24 FP multiplications,
* (or, 136 additions, 16 multiplications, 8 fused multiply/add),
* 46 stack variables, and 64 memory accesses
*/
static const fftw_real K382683432 = FFTW_KONST(+0.382683432365089771728459984030398866761344562);
static const fftw_real K923879532 = FFTW_KONST(+0.923879532511286756128183189396788286822416626);
static const fftw_real K707106781 = FFTW_KONST(+0.707106781186547524400844362104849039284835938);
/*
* Generator Id's :
* $Id: fni_16.c,v 1.1 2002/04/07 21:26:04 menno Exp $
* $Id: fni_16.c,v 1.1 2002/04/07 21:26:04 menno Exp $
* $Id: fni_16.c,v 1.1 2002/04/07 21:26:04 menno Exp $
*/
void fftwi_no_twiddle_16(const fftw_complex *input, fftw_complex *output, int istride, int ostride)
{
fftw_real tmp7;
fftw_real tmp129;
fftw_real tmp38;
fftw_real tmp115;
fftw_real tmp49;
fftw_real tmp95;
fftw_real tmp83;
fftw_real tmp105;
fftw_real tmp29;
fftw_real tmp123;
fftw_real tmp73;
fftw_real tmp101;
fftw_real tmp78;
fftw_real tmp102;
fftw_real tmp126;
fftw_real tmp141;
fftw_real tmp14;
fftw_real tmp116;
fftw_real tmp45;
fftw_real tmp130;
fftw_real tmp52;
fftw_real tmp84;
fftw_real tmp55;
fftw_real tmp85;
fftw_real tmp22;
fftw_real tmp118;
fftw_real tmp62;
fftw_real tmp98;
fftw_real tmp67;
fftw_real tmp99;
fftw_real tmp121;
fftw_real tmp140;
ASSERT_ALIGNED_DOUBLE;
{
fftw_real tmp3;
fftw_real tmp81;
fftw_real tmp34;
fftw_real tmp48;
fftw_real tmp6;
fftw_real tmp47;
fftw_real tmp37;
fftw_real tmp82;
ASSERT_ALIGNED_DOUBLE;
{
fftw_real tmp1;
fftw_real tmp2;
fftw_real tmp32;
fftw_real tmp33;
ASSERT_ALIGNED_DOUBLE;
tmp1 = c_re(input[0]);
tmp2 = c_re(input[8 * istride]);
tmp3 = tmp1 + tmp2;
tmp81 = tmp1 - tmp2;
tmp32 = c_im(input[0]);
tmp33 = c_im(input[8 * istride]);
tmp34 = tmp32 + tmp33;
tmp48 = tmp32 - tmp33;
}
{
fftw_real tmp4;
fftw_real tmp5;
fftw_real tmp35;
fftw_real tmp36;
ASSERT_ALIGNED_DOUBLE;
tmp4 = c_re(input[4 * istride]);
tmp5 = c_re(input[12 * istride]);
tmp6 = tmp4 + tmp5;
tmp47 = tmp4 - tmp5;
tmp35 = c_im(input[4 * istride]);
tmp36 = c_im(input[12 * istride]);
tmp37 = tmp35 + tmp36;
tmp82 = tmp35 - tmp36;
}
tmp7 = tmp3 + tmp6;
tmp129 = tmp3 - tmp6;
tmp38 = tmp34 + tmp37;
tmp115 = tmp34 - tmp37;
tmp49 = tmp47 + tmp48;
tmp95 = tmp48 - tmp47;
tmp83 = tmp81 - tmp82;
tmp105 = tmp81 + tmp82;
}
{
fftw_real tmp25;
fftw_real tmp74;
fftw_real tmp72;
fftw_real tmp124;
fftw_real tmp28;
fftw_real tmp69;
fftw_real tmp77;
fftw_real tmp125;
ASSERT_ALIGNED_DOUBLE;
{
fftw_real tmp23;
fftw_real tmp24;
fftw_real tmp70;
fftw_real tmp71;
ASSERT_ALIGNED_DOUBLE;
tmp23 = c_re(input[15 * istride]);
tmp24 = c_re(input[7 * istride]);
tmp25 = tmp23 + tmp24;
tmp74 = tmp23 - tmp24;
tmp70 = c_im(input[15 * istride]);
tmp71 = c_im(input[7 * istride]);
tmp72 = tmp70 - tmp71;
tmp124 = tmp70 + tmp71;
}
{
fftw_real tmp26;
fftw_real tmp27;
fftw_real tmp75;
fftw_real tmp76;
ASSERT_ALIGNED_DOUBLE;
tmp26 = c_re(input[3 * istride]);
tmp27 = c_re(input[11 * istride]);
tmp28 = tmp26 + tmp27;
tmp69 = tmp26 - tmp27;
tmp75 = c_im(input[3 * istride]);
tmp76 = c_im(input[11 * istride]);
tmp77 = tmp75 - tmp76;
tmp125 = tmp75 + tmp76;
}
tmp29 = tmp25 + tmp28;
tmp123 = tmp25 - tmp28;
tmp73 = tmp69 + tmp72;
tmp101 = tmp72 - tmp69;
tmp78 = tmp74 - tmp77;
tmp102 = tmp74 + tmp77;
tmp126 = tmp124 - tmp125;
tmp141 = tmp124 + tmp125;
}
{
fftw_real tmp10;
fftw_real tmp50;
fftw_real tmp41;
fftw_real tmp51;
fftw_real tmp13;
fftw_real tmp54;
fftw_real tmp44;
fftw_real tmp53;
ASSERT_ALIGNED_DOUBLE;
{
fftw_real tmp8;
fftw_real tmp9;
fftw_real tmp39;
fftw_real tmp40;
ASSERT_ALIGNED_DOUBLE;
tmp8 = c_re(input[2 * istride]);
tmp9 = c_re(input[10 * istride]);
tmp10 = tmp8 + tmp9;
tmp50 = tmp8 - tmp9;
tmp39 = c_im(input[2 * istride]);
tmp40 = c_im(input[10 * istride]);
tmp41 = tmp39 + tmp40;
tmp51 = tmp39 - tmp40;
}
{
fftw_real tmp11;
fftw_real tmp12;
fftw_real tmp42;
fftw_real tmp43;
ASSERT_ALIGNED_DOUBLE;
tmp11 = c_re(input[14 * istride]);
tmp12 = c_re(input[6 * istride]);
tmp13 = tmp11 + tmp12;
tmp54 = tmp11 - tmp12;
tmp42 = c_im(input[14 * istride]);
tmp43 = c_im(input[6 * istride]);
tmp44 = tmp42 + tmp43;
tmp53 = tmp42 - tmp43;
}
tmp14 = tmp10 + tmp13;
tmp116 = tmp10 - tmp13;
tmp45 = tmp41 + tmp44;
tmp130 = tmp44 - tmp41;
tmp52 = tmp50 + tmp51;
tmp84 = tmp50 - tmp51;
tmp55 = tmp53 - tmp54;
tmp85 = tmp54 + tmp53;
}
{
fftw_real tmp18;
fftw_real tmp63;
fftw_real tmp61;
fftw_real tmp119;
fftw_real tmp21;
fftw_real tmp58;
fftw_real tmp66;
fftw_real tmp120;
ASSERT_ALIGNED_DOUBLE;
{
fftw_real tmp16;
fftw_real tmp17;
fftw_real tmp59;
fftw_real tmp60;
ASSERT_ALIGNED_DOUBLE;
tmp16 = c_re(input[istride]);
tmp17 = c_re(input[9 * istride]);
tmp18 = tmp16 + tmp17;
tmp63 = tmp16 - tmp17;
tmp59 = c_im(input[istride]);
tmp60 = c_im(input[9 * istride]);
tmp61 = tmp59 - tmp60;
tmp119 = tmp59 + tmp60;
}
{
fftw_real tmp19;
fftw_real tmp20;
fftw_real tmp64;
fftw_real tmp65;
ASSERT_ALIGNED_DOUBLE;
tmp19 = c_re(input[5 * istride]);
tmp20 = c_re(input[13 * istride]);
tmp21 = tmp19 + tmp20;
tmp58 = tmp19 - tmp20;
tmp64 = c_im(input[5 * istride]);
tmp65 = c_im(input[13 * istride]);
tmp66 = tmp64 - tmp65;
tmp120 = tmp64 + tmp65;
}
tmp22 = tmp18 + tmp21;
tmp118 = tmp18 - tmp21;
tmp62 = tmp58 + tmp61;
tmp98 = tmp61 - tmp58;
tmp67 = tmp63 - tmp66;
tmp99 = tmp63 + tmp66;
tmp121 = tmp119 - tmp120;
tmp140 = tmp119 + tmp120;
}
{
fftw_real tmp15;
fftw_real tmp30;
fftw_real tmp31;
fftw_real tmp46;
ASSERT_ALIGNED_DOUBLE;
tmp15 = tmp7 + tmp14;
tmp30 = tmp22 + tmp29;
c_re(output[8 * ostride]) = tmp15 - tmp30;
c_re(output[0]) = tmp15 + tmp30;
tmp31 = tmp22 - tmp29;
tmp46 = tmp38 - tmp45;
c_im(output[4 * ostride]) = tmp31 + tmp46;
c_im(output[12 * ostride]) = tmp46 - tmp31;
}
{
fftw_real tmp139;
fftw_real tmp142;
fftw_real tmp143;
fftw_real tmp144;
ASSERT_ALIGNED_DOUBLE;
tmp139 = tmp38 + tmp45;
tmp142 = tmp140 + tmp141;
c_im(output[8 * ostride]) = tmp139 - tmp142;
c_im(output[0]) = tmp139 + tmp142;
tmp143 = tmp7 - tmp14;
tmp144 = tmp141 - tmp140;
c_re(output[12 * ostride]) = tmp143 - tmp144;
c_re(output[4 * ostride]) = tmp143 + tmp144;
}
{
fftw_real tmp117;
fftw_real tmp131;
fftw_real tmp128;
fftw_real tmp132;
fftw_real tmp122;
fftw_real tmp127;
ASSERT_ALIGNED_DOUBLE;
tmp117 = tmp115 - tmp116;
tmp131 = tmp129 + tmp130;
tmp122 = tmp118 - tmp121;
tmp127 = tmp123 + tmp126;
tmp128 = K707106781 * (tmp122 - tmp127);
tmp132 = K707106781 * (tmp122 + tmp127);
c_im(output[14 * ostride]) = tmp117 - tmp128;
c_im(output[6 * ostride]) = tmp117 + tmp128;
c_re(output[10 * ostride]) = tmp131 - tmp132;
c_re(output[2 * ostride]) = tmp131 + tmp132;
}
{
fftw_real tmp133;
fftw_real tmp137;
fftw_real tmp136;
fftw_real tmp138;
fftw_real tmp134;
fftw_real tmp135;
ASSERT_ALIGNED_DOUBLE;
tmp133 = tmp116 + tmp115;
tmp137 = tmp129 - tmp130;
tmp134 = tmp118 + tmp121;
tmp135 = tmp126 - tmp123;
tmp136 = K707106781 * (tmp134 + tmp135);
tmp138 = K707106781 * (tmp135 - tmp134);
c_im(output[10 * ostride]) = tmp133 - tmp136;
c_im(output[2 * ostride]) = tmp133 + tmp136;
c_re(output[14 * ostride]) = tmp137 - tmp138;
c_re(output[6 * ostride]) = tmp137 + tmp138;
}
{
fftw_real tmp57;
fftw_real tmp89;
fftw_real tmp92;
fftw_real tmp94;
fftw_real tmp87;
fftw_real tmp93;
fftw_real tmp80;
fftw_real tmp88;
ASSERT_ALIGNED_DOUBLE;
{
fftw_real tmp56;
fftw_real tmp90;
fftw_real tmp91;
fftw_real tmp86;
fftw_real tmp68;
fftw_real tmp79;
ASSERT_ALIGNED_DOUBLE;
tmp56 = K707106781 * (tmp52 + tmp55);
tmp57 = tmp49 + tmp56;
tmp89 = tmp49 - tmp56;
tmp90 = (K923879532 * tmp67) - (K382683432 * tmp62);
tmp91 = (K382683432 * tmp73) + (K923879532 * tmp78);
tmp92 = tmp90 - tmp91;
tmp94 = tmp90 + tmp91;
tmp86 = K707106781 * (tmp84 + tmp85);
tmp87 = tmp83 - tmp86;
tmp93 = tmp83 + tmp86;
tmp68 = (K923879532 * tmp62) + (K382683432 * tmp67);
tmp79 = (K923879532 * tmp73) - (K382683432 * tmp78);
tmp80 = tmp68 + tmp79;
tmp88 = tmp79 - tmp68;
}
c_im(output[9 * ostride]) = tmp57 - tmp80;
c_im(output[ostride]) = tmp57 + tmp80;
c_re(output[13 * ostride]) = tmp87 - tmp88;
c_re(output[5 * ostride]) = tmp87 + tmp88;
c_im(output[13 * ostride]) = tmp89 - tmp92;
c_im(output[5 * ostride]) = tmp89 + tmp92;
c_re(output[9 * ostride]) = tmp93 - tmp94;
c_re(output[ostride]) = tmp93 + tmp94;
}
{
fftw_real tmp97;
fftw_real tmp109;
fftw_real tmp112;
fftw_real tmp114;
fftw_real tmp107;
fftw_real tmp113;
fftw_real tmp104;
fftw_real tmp108;
ASSERT_ALIGNED_DOUBLE;
{
fftw_real tmp96;
fftw_real tmp110;
fftw_real tmp111;
fftw_real tmp106;
fftw_real tmp100;
fftw_real tmp103;
ASSERT_ALIGNED_DOUBLE;
tmp96 = K707106781 * (tmp84 - tmp85);
tmp97 = tmp95 + tmp96;
tmp109 = tmp95 - tmp96;
tmp110 = (K382683432 * tmp99) - (K923879532 * tmp98);
tmp111 = (K923879532 * tmp101) + (K382683432 * tmp102);
tmp112 = tmp110 - tmp111;
tmp114 = tmp110 + tmp111;
tmp106 = K707106781 * (tmp55 - tmp52);
tmp107 = tmp105 - tmp106;
tmp113 = tmp105 + tmp106;
tmp100 = (K382683432 * tmp98) + (K923879532 * tmp99);
tmp103 = (K382683432 * tmp101) - (K923879532 * tmp102);
tmp104 = tmp100 + tmp103;
tmp108 = tmp103 - tmp100;
}
c_im(output[11 * ostride]) = tmp97 - tmp104;
c_im(output[3 * ostride]) = tmp97 + tmp104;
c_re(output[15 * ostride]) = tmp107 - tmp108;
c_re(output[7 * ostride]) = tmp107 + tmp108;
c_im(output[15 * ostride]) = tmp109 - tmp112;
c_im(output[7 * ostride]) = tmp109 + tmp112;
c_re(output[11 * ostride]) = tmp113 - tmp114;
c_re(output[3 * ostride]) = tmp113 + tmp114;
}
}
fftw_codelet_desc fftwi_no_twiddle_16_desc =
{
"fftwi_no_twiddle_16",
(void (*)()) fftwi_no_twiddle_16,
16,
FFTW_BACKWARD,
FFTW_NOTW,
364,
0,
(const int *) 0,
};