Rev 3 | Details | Compare with Previous | Last modification | View Log | RSS feed
| 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 13:54:34 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 -real2hc 8 */ |
||
| 27 | |||
| 28 | /* |
||
| 29 | * This function contains 20 FP additions, 2 FP multiplications, |
||
| 30 | * (or, 20 additions, 2 multiplications, 0 fused multiply/add), |
||
| 31 | * 12 stack variables, and 16 memory accesses |
||
| 32 | */ |
||
| 33 | static const fftw_real K707106781 = FFTW_KONST(+0.707106781186547524400844362104849039284835938); |
||
| 34 | |||
| 35 | /* |
||
| 36 | * Generator Id's : |
||
| 107 | pj | 37 | * $Id: frc_8.c,v 1.2 2003-03-24 11:14:59 pj Exp $ |
| 38 | * $Id: frc_8.c,v 1.2 2003-03-24 11:14:59 pj Exp $ |
||
| 39 | * $Id: frc_8.c,v 1.2 2003-03-24 11:14:59 pj Exp $ |
||
| 2 | pj | 40 | */ |
| 41 | |||
| 42 | void fftw_real2hc_8(const fftw_real *input, fftw_real *real_output, fftw_real *imag_output, int istride, int real_ostride, int imag_ostride) |
||
| 43 | { |
||
| 44 | fftw_real tmp3; |
||
| 45 | fftw_real tmp7; |
||
| 46 | fftw_real tmp13; |
||
| 47 | fftw_real tmp19; |
||
| 48 | fftw_real tmp6; |
||
| 49 | fftw_real tmp16; |
||
| 50 | fftw_real tmp10; |
||
| 51 | fftw_real tmp18; |
||
| 52 | ASSERT_ALIGNED_DOUBLE(); |
||
| 53 | { |
||
| 54 | fftw_real tmp1; |
||
| 55 | fftw_real tmp2; |
||
| 56 | fftw_real tmp11; |
||
| 57 | fftw_real tmp12; |
||
| 58 | ASSERT_ALIGNED_DOUBLE(); |
||
| 59 | tmp1 = input[0]; |
||
| 60 | tmp2 = input[4 * istride]; |
||
| 61 | tmp3 = tmp1 + tmp2; |
||
| 62 | tmp7 = tmp1 - tmp2; |
||
| 63 | tmp11 = input[7 * istride]; |
||
| 64 | tmp12 = input[3 * istride]; |
||
| 65 | tmp13 = tmp11 - tmp12; |
||
| 66 | tmp19 = tmp11 + tmp12; |
||
| 67 | } |
||
| 68 | { |
||
| 69 | fftw_real tmp4; |
||
| 70 | fftw_real tmp5; |
||
| 71 | fftw_real tmp8; |
||
| 72 | fftw_real tmp9; |
||
| 73 | ASSERT_ALIGNED_DOUBLE(); |
||
| 74 | tmp4 = input[2 * istride]; |
||
| 75 | tmp5 = input[6 * istride]; |
||
| 76 | tmp6 = tmp4 + tmp5; |
||
| 77 | tmp16 = tmp4 - tmp5; |
||
| 78 | tmp8 = input[istride]; |
||
| 79 | tmp9 = input[5 * istride]; |
||
| 80 | tmp10 = tmp8 - tmp9; |
||
| 81 | tmp18 = tmp8 + tmp9; |
||
| 82 | } |
||
| 83 | { |
||
| 84 | fftw_real tmp17; |
||
| 85 | fftw_real tmp20; |
||
| 86 | fftw_real tmp14; |
||
| 87 | fftw_real tmp15; |
||
| 88 | ASSERT_ALIGNED_DOUBLE(); |
||
| 89 | real_output[2 * real_ostride] = tmp3 - tmp6; |
||
| 90 | tmp17 = tmp3 + tmp6; |
||
| 91 | tmp20 = tmp18 + tmp19; |
||
| 92 | real_output[4 * real_ostride] = tmp17 - tmp20; |
||
| 93 | real_output[0] = tmp17 + tmp20; |
||
| 94 | imag_output[2 * imag_ostride] = tmp19 - tmp18; |
||
| 95 | tmp14 = K707106781 * (tmp10 + tmp13); |
||
| 96 | real_output[3 * real_ostride] = tmp7 - tmp14; |
||
| 97 | real_output[real_ostride] = tmp7 + tmp14; |
||
| 98 | tmp15 = K707106781 * (tmp13 - tmp10); |
||
| 99 | imag_output[imag_ostride] = tmp15 - tmp16; |
||
| 100 | imag_output[3 * imag_ostride] = tmp16 + tmp15; |
||
| 101 | } |
||
| 102 | } |
||
| 103 | |||
| 104 | fftw_codelet_desc fftw_real2hc_8_desc = |
||
| 105 | { |
||
| 106 | "fftw_real2hc_8", |
||
| 107 | (void (*)()) fftw_real2hc_8, |
||
| 108 | 8, |
||
| 109 | FFTW_FORWARD, |
||
| 110 | FFTW_REAL2HC, |
||
| 111 | 178, |
||
| 112 | 0, |
||
| 113 | (const int *) 0, |
||
| 114 | }; |