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1 /* |
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2 * LIBOIL - Library of Optimized Inner Loops |
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3 * Copyright (c) 2003,2004 David A. Schleef <ds@schleef.org> |
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4 * All rights reserved. |
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5 * |
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6 * Redistribution and use in source and binary forms, with or without |
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7 * modification, are permitted provided that the following conditions |
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8 * are met: |
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9 * 1. Redistributions of source code must retain the above copyright |
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10 * notice, this list of conditions and the following disclaimer. |
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11 * 2. Redistributions in binary form must reproduce the above copyright |
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12 * notice, this list of conditions and the following disclaimer in the |
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13 * documentation and/or other materials provided with the distribution. |
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14 * |
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15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, |
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19 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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25 * POSSIBILITY OF SUCH DAMAGE. |
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26 */ |
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27 //Portions Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. |
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28 |
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29 #ifdef HAVE_CONFIG_H |
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30 #include "config.h" |
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31 #endif |
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32 |
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33 #include <liboilfunction.h> |
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34 #include "liboil/simdpack/simdpack.h" |
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35 #include <math.h> |
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36 |
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37 /** |
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38 * oil_diffsquaresum_f32: |
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39 * @d_1: |
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40 * @src1: |
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41 * @sstr1: |
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42 * @src2: |
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43 * @sstr2: |
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44 * @n: |
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45 * |
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46 * Calculates the sum of squared differences between @src1 and @src2 |
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47 * and places the result in @d_1. |
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48 */ |
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49 OIL_DEFINE_CLASS (diffsquaresum_f32, |
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50 "float *d_1, float *src1, int sstr1, float *src2, int sstr2, int n"); |
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51 |
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52 static void |
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53 diffsquaresum_f32_ref(float *dest, float *src1, int sstr1, float *src2, |
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54 int sstr2, int n) |
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55 { |
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56 double sum = 0; |
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57 double errsum = 0; |
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58 double tmp; |
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59 double x; |
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60 int i; |
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61 |
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62 for(i=0;i<n;i++){ |
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63 x = OIL_GET(src1, i*sstr1, float) - |
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64 OIL_GET(src2, i*sstr2, float); |
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65 x = x*x; |
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66 tmp = sum; |
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67 sum += x; |
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68 errsum += (tmp - sum) + x; |
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69 } |
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70 |
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71 *dest = sum + errsum; |
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72 } |
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73 |
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74 OIL_DEFINE_IMPL_REF (diffsquaresum_f32_ref, diffsquaresum_f32); |
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75 |
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76 |
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77 |
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78 |
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79 #ifdef __SYMBIAN32__ |
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80 |
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81 OilFunctionClass* __oil_function_class_diffsquaresum_f32() { |
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82 return &_oil_function_class_diffsquaresum_f32; |
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83 } |
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84 #endif |
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85 |
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86 |
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87 |
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88 #ifdef __SYMBIAN32__ |
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89 |
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90 OilFunctionImpl* __oil_function_impl_diffsquaresum_f32_ref() { |
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91 return &_oil_function_impl_diffsquaresum_f32_ref; |
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92 } |
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93 #endif |
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94 |
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95 |
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96 |
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97 #ifdef __SYMBIAN32__ |
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98 |
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99 EXPORT_C void** _oil_function_class_ptr_diffsquaresum_f32 () { |
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100 oil_function_class_ptr_diffsquaresum_f32 = __oil_function_class_diffsquaresum_f32(); |
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101 return &oil_function_class_ptr_diffsquaresum_f32->func; |
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102 } |
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103 #endif |
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104 |