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Diffstat (limited to 'src/ffts_small.c')
| -rw-r--r-- | src/ffts_small.c | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/src/ffts_small.c b/src/ffts_small.c deleted file mode 100644 index e53493c..0000000 --- a/src/ffts_small.c +++ /dev/null @@ -1,157 +0,0 @@ -/* - - This file is part of FFTS -- The Fastest Fourier Transform in the South - - Copyright (c) 2013, Michael J. Cree <mcree@orcon.net.nz> - Copyright (c) 2012, 2013, Anthony M. Blake <amb@anthonix.com> - - All rights reserved. - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions are met: - * Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - * Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in the - documentation and/or other materials provided with the distribution. - * Neither the name of the organization nor the - names of its contributors may be used to endorse or promote products - derived from this software without specific prior written permission. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND - ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - DISCLAIMED. IN NO EVENT SHALL ANTHONY M. BLAKE BE LIABLE FOR ANY - DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -*/ - -#include "ffts.h" -#include "macros.h" - -#include <stdlib.h> - -#define DEBUG(x) - -#include "ffts_small.h" - - void firstpass_16_f(ffts_plan_t * p, const void * in, void * out) -{ - const data_t *din = (const data_t *)in; - data_t *dout = (data_t *)out; - V r0_1,r2_3,r4_5,r6_7,r8_9,r10_11,r12_13,r14_15; - float *LUT8 = p->ws; - - L_4_4(0, din+0,din+16,din+8,din+24,&r0_1,&r2_3,&r8_9,&r10_11); - L_2_4(0, din+4,din+20,din+28,din+12,&r4_5,&r6_7,&r14_15,&r12_13); - K_N(0, VLD(LUT8),VLD(LUT8+4),&r0_1,&r2_3,&r4_5,&r6_7); - K_N(0, VLD(LUT8+8),VLD(LUT8+12),&r0_1,&r4_5,&r8_9,&r12_13); - S_4(r0_1,r4_5,r8_9,r12_13,dout+0,dout+8,dout+16,dout+24); - K_N(0, VLD(LUT8+16),VLD(LUT8+20),&r2_3,&r6_7,&r10_11,&r14_15); - S_4(r2_3,r6_7,r10_11,r14_15,dout+4,dout+12,dout+20,dout+28); -} - - void firstpass_16_b(ffts_plan_t * p, const void * in, void * out) -{ - const data_t *din = (const data_t *)in; - data_t *dout = (data_t *)out; - V r0_1,r2_3,r4_5,r6_7,r8_9,r10_11,r12_13,r14_15; - float *LUT8 = p->ws; - - L_4_4(1, din+0,din+16,din+8,din+24,&r0_1,&r2_3,&r8_9,&r10_11); - L_2_4(1, din+4,din+20,din+28,din+12,&r4_5,&r6_7,&r14_15,&r12_13); - K_N(1, VLD(LUT8),VLD(LUT8+4),&r0_1,&r2_3,&r4_5,&r6_7); - K_N(1, VLD(LUT8+8),VLD(LUT8+12),&r0_1,&r4_5,&r8_9,&r12_13); - S_4(r0_1,r4_5,r8_9,r12_13,dout+0,dout+8,dout+16,dout+24); - K_N(1, VLD(LUT8+16),VLD(LUT8+20),&r2_3,&r6_7,&r10_11,&r14_15); - S_4(r2_3,r6_7,r10_11,r14_15,dout+4,dout+12,dout+20,dout+28); -} - - - void firstpass_8_f(ffts_plan_t *p, const void *in, void *out) -{ - const data_t *din = (const data_t *)in; - data_t *dout = (data_t *)out; - V r0_1, r2_3, r4_5, r6_7; - float *LUT8 = p->ws + p->ws_is[0]; - - L_4_2(0, din, din+8, din+4, din+12, &r0_1, &r2_3, &r4_5, &r6_7); - K_N(0, VLD(LUT8), VLD(LUT8+4), &r0_1, &r2_3, &r4_5, &r6_7); - S_4(r0_1,r2_3,r4_5,r6_7,dout+0,dout+4,dout+8,dout+12); -} - - void firstpass_8_b(ffts_plan_t *p, const void *in, void *out) -{ - const data_t *din = (const data_t *)in; - data_t *dout = (data_t *)out; - V r0_1, r2_3, r4_5, r6_7; - float *LUT8 = p->ws + p->ws_is[0]; - - L_4_2(1, din, din+8, din+4, din+12, &r0_1, &r2_3, &r4_5, &r6_7); - K_N(1, VLD(LUT8), VLD(LUT8+4), &r0_1, &r2_3, &r4_5, &r6_7); - S_4(r0_1,r2_3,r4_5,r6_7,dout+0,dout+4,dout+8,dout+12); -} - - - void firstpass_4_f(ffts_plan_t *p, const void *in, void *out) -{ - const data_t *din = (const data_t *)in; - data_t *dout = (data_t *)out; - cdata_t t0, t1, t2, t3, t4, t5, t6, t7; - t0[0] = din[0]; t0[1] = din[1]; - t1[0] = din[4]; t1[1] = din[5]; - t2[0] = din[2]; t2[1] = din[3]; - t3[0] = din[6]; t3[1] = din[7]; - - t4[0] = t0[0] + t1[0]; t4[1] = t0[1] + t1[1]; - t5[0] = t0[0] - t1[0]; t5[1] = t0[1] - t1[1]; - t6[0] = t2[0] + t3[0]; t6[1] = t2[1] + t3[1]; - t7[0] = t2[0] - t3[0]; t7[1] = t2[1] - t3[1]; - - dout[0] = t4[0] + t6[0]; dout[1] = t4[1] + t6[1]; - dout[4] = t4[0] - t6[0]; dout[5] = t4[1] - t6[1]; - dout[2] = t5[0] + t7[1]; dout[3] = t5[1] - t7[0]; - dout[6] = t5[0] - t7[1]; dout[7] = t5[1] + t7[0]; -} - - void firstpass_4_b(ffts_plan_t *p, const void *in, void *out) -{ - const data_t *din = (const data_t *)in; - data_t *dout = (data_t *)out; - cdata_t t0, t1, t2, t3, t4, t5, t6, t7; - t0[0] = din[0]; t0[1] = din[1]; - t1[0] = din[4]; t1[1] = din[5]; - t2[0] = din[2]; t2[1] = din[3]; - t3[0] = din[6]; t3[1] = din[7]; - - t4[0] = t0[0] + t1[0]; t4[1] = t0[1] + t1[1]; - t5[0] = t0[0] - t1[0]; t5[1] = t0[1] - t1[1]; - t6[0] = t2[0] + t3[0]; t6[1] = t2[1] + t3[1]; - t7[0] = t2[0] - t3[0]; t7[1] = t2[1] - t3[1]; - - dout[0] = t4[0] + t6[0]; dout[1] = t4[1] + t6[1]; - dout[4] = t4[0] - t6[0]; dout[5] = t4[1] - t6[1]; - dout[2] = t5[0] - t7[1]; dout[3] = t5[1] + t7[0]; - dout[6] = t5[0] + t7[1]; dout[7] = t5[1] - t7[0]; -} - - void firstpass_2(ffts_plan_t *p, const void *in, void *out) -{ - const data_t *din = (const data_t *)in; - data_t *dout = (data_t *)out; - cdata_t t0, t1, r0,r1; - t0[0] = din[0]; t0[1] = din[1]; - t1[0] = din[2]; t1[1] = din[3]; - r0[0] = t0[0] + t1[0]; - r0[1] = t0[1] + t1[1]; - r1[0] = t0[0] - t1[0]; - r1[1] = t0[1] - t1[1]; - dout[0] = r0[0]; dout[1] = r0[1]; - dout[2] = r1[0]; dout[3] = r1[1]; -} -// vim: set autoindent noexpandtab tabstop=3 shiftwidth=3: |
