00001 /*This file is prepared for Doxygen automatic documentation generation.*/ 00015 /* Copyright (c) 2009 Atmel Corporation. All rights reserved. 00016 * 00017 * Redistribution and use in source and binary forms, with or without 00018 * modification, are permitted provided that the following conditions are met: 00019 * 00020 * 1. Redistributions of source code must retain the above copyright notice, this 00021 * list of conditions and the following disclaimer. 00022 * 00023 * 2. Redistributions in binary form must reproduce the above copyright notice, 00024 * this list of conditions and the following disclaimer in the documentation 00025 * and/or other materials provided with the distribution. 00026 * 00027 * 3. The name of Atmel may not be used to endorse or promote products derived 00028 * from this software without specific prior written permission. 00029 * 00030 * 4. This software may only be redistributed and used in connection with an Atmel 00031 * AVR product. 00032 * 00033 * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED 00034 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 00035 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE 00036 * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR 00037 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 00038 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 00039 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 00040 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00041 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00042 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE 00043 * 00044 */ 00045 00046 #include "dsp.h" 00047 #include "preprocessor.h" 00048 00049 #if defined(FORCE_ALL_GENERICS) || \ 00050 defined(FORCE_GENERIC_VECT16_COMPLEXCONJ) || \ 00051 !defined(TARGET_SPECIFIC_VECT16_COMPLEXCONJ) 00052 00053 #define DSP16_COMPLEXCONJUGATE(x_num, data) \ 00054 temp = vect1[x_num].real; \ 00055 vect1[x_num].real = vect2[x_num].imag; \ 00056 vect1[x_num].imag = temp; 00057 00058 /********************************************************************************************* 00059 * This function is the ending function of the conj. It is used to conjugate the last items of a vector. 00060 *********************************************************************************************/ 00061 #define DSP16_COMPLEXCONJ_KERNEL_X_FCT(x_num, data) \ 00062 static void TPASTE2(dsp16_vect_complexconj_kernel_x, x_num)(dsp16_complex_t *vect1, dsp16_complex_t *vect2) \ 00063 { \ 00064 dsp16_t temp; \ 00065 MREPEAT(x_num, DSP16_COMPLEXCONJUGATE, ""); \ 00066 } 00067 00068 static void dsp16_vect_complexconj_kernel_x0(dsp16_complex_t *vect1, dsp16_complex_t *vect2) 00069 { 00070 } 00071 /*********************************************************************************************/ 00072 00073 DSP16_COMPLEXCONJ_KERNEL_X_FCT(1, "") 00074 DSP16_COMPLEXCONJ_KERNEL_X_FCT(2, "") 00075 DSP16_COMPLEXCONJ_KERNEL_X_FCT(3, "") 00076 00077 void dsp16_vect_complex_conj(dsp16_complex_t *vect1, dsp16_complex_t *vect2, int size) 00078 { 00079 typedef void (*complexconj_kernel_opti_t)(dsp16_complex_t *, dsp16_complex_t *); 00080 static const complexconj_kernel_opti_t complexconj_end_kernel_opti[4] = { 00081 dsp16_vect_complexconj_kernel_x0, 00082 dsp16_vect_complexconj_kernel_x1, 00083 dsp16_vect_complexconj_kernel_x2, 00084 dsp16_vect_complexconj_kernel_x3 00085 }; 00086 int n; 00087 00088 for(n=0; n<size-3; n+=4) 00089 { 00090 dsp16_t temp; 00091 00092 DSP16_COMPLEXCONJUGATE(n, ""); 00093 DSP16_COMPLEXCONJUGATE(n+1, ""); 00094 DSP16_COMPLEXCONJUGATE(n+2, ""); 00095 DSP16_COMPLEXCONJUGATE(n+3, ""); 00096 } 00097 00098 // Jump on different functions depending on the length of the vectors to compute 00099 complexconj_end_kernel_opti[size&0x3](&vect1[n], &vect2[n]); 00100 } 00101 00102 #endif