| 1 | #include "ioutils.h" |
| 2 | #include <string.h> |
| 3 | #include <stdio.h> |
| 4 | |
| 5 | // Check if array == refArray |
| 6 | void compareArray(const char* ID, const void* array, const void* refArray, mwSize size, int isInteger) |
| 7 | { |
| 8 | Real EPS = 1e-5; //precision |
| 9 | printf("Checking %s\n",ID); |
| 10 | Real maxError = 0.0; |
| 11 | for (mwSize i=0; i<size; i++) |
| 12 | { |
| 13 | Real error = isInteger |
| 14 | ? fabs(((Int*)array)[i] - ((Int*)refArray)[i]) |
| 15 | : fabs(((Real*)array)[i] - ((Real*)refArray)[i]); |
| 16 | if (error >= maxError) |
| 17 | maxError = error; |
| 18 | } |
| 19 | if (maxError >= EPS) |
| 20 | printf(" Inaccuracy: max(abs(error)) = %g >= %g\n",maxError,EPS); |
| 21 | else |
| 22 | printf(" OK\n"); |
| 23 | } |
| 24 | |
| 25 | // Next function is a generalization of : |
| 26 | //~ Real* brToMatlabArray(Real* brArray, int dimX, int dimY, int dimZ, int dimW) |
| 27 | //~ { |
| 28 | //~ Real* matlabArray = (Real*)malloc(dimX*dimY*dimZ*dimW*sizeof(Real)); |
| 29 | //~ for (int u=0; u<dimX*dimY*dimZ*dimW; u++) |
| 30 | //~ { |
| 31 | //~ int xIndex = u / (dimY*dimZ*dimW); |
| 32 | //~ int yIndex = (u % (dimY*dimZ*dimW)) / (dimZ*dimW); |
| 33 | //~ int zIndex = (u % (dimZ*dimW)) / dimW; |
| 34 | //~ int wIndex = u % dimW; |
| 35 | //~ matlabArray[xIndex+yIndex*dimX+zIndex*dimX*dimY+wIndex*dimX*dimY*dimZ] = brArray[u]; |
| 36 | //~ } |
| 37 | //~ return matlabArray; |
| 38 | //~ } |
| 39 | |
| 40 | // Auxiliary to convert from ours ("by-rows") encoding to MATLAB |
| 41 | void* brToMatlabArray(const void* brArray, const mwSize* dimensions, int nbDims, int isInteger) |
| 42 | { |
| 43 | mwSize totalDim = 1; |
| 44 | for (int i=0; i<nbDims; i++) |
| 45 | totalDim *= dimensions[i]; |
| 46 | size_t elementSize = isInteger |
| 47 | ? sizeof(Int) |
| 48 | : sizeof(Real); |
| 49 | |
| 50 | void* matlabArray = malloc(totalDim*elementSize); |
| 51 | for (mwSize u=0; u<totalDim; u++) |
| 52 | { |
| 53 | mwSize prodDimLeft = totalDim; |
| 54 | mwSize prodDimRight = totalDim / dimensions[0]; |
| 55 | mwSize prodDimInIndex = 1; |
| 56 | mwSize index = 0; |
| 57 | for (int v=0; v<nbDims; v++) |
| 58 | { |
| 59 | index += ((u % prodDimLeft) / prodDimRight) * prodDimInIndex; |
| 60 | prodDimInIndex *= dimensions[v]; |
| 61 | prodDimLeft /= dimensions[v]; |
| 62 | if (v+1 < nbDims) |
| 63 | prodDimRight /= dimensions[v+1]; |
| 64 | } |
| 65 | if (isInteger) |
| 66 | ((Int*)matlabArray)[index] = ((Int*)brArray)[u]; |
| 67 | else |
| 68 | ((Real*)matlabArray)[index] = ((Real*)brArray)[u]; |
| 69 | } |
| 70 | return matlabArray; |
| 71 | } |
| 72 | |
| 73 | // Next function is a generalization of : |
| 74 | //~ Real* matlabToBrArray(Real* matlabArray, int dimX, int dimY, int dimZ, int dimU) |
| 75 | //~ { |
| 76 | //~ Real* brArray = (Real*)malloc(dimX*dimY*dimZ*dimU*sizeof(Real)); |
| 77 | //~ for (int u=0; u<dimX*dimY*dimZ*dimU; u++) |
| 78 | //~ { |
| 79 | //~ int xIndex = u % dimX; |
| 80 | //~ int yIndex = (u % (dimX*dimY)) / dimX; |
| 81 | //~ int zIndex = (u % (dimX*dimY*dimZ)) / (dimX*dimY); |
| 82 | //~ int uIndex = u / (dimX*dimY*dimZ); |
| 83 | //~ brArray[xIndex*dimY*dimZ*dimU+yIndex*dimZ*dimU+zIndex*dimU+uIndex] = matlabArray[u]; |
| 84 | //~ } |
| 85 | //~ return brArray; |
| 86 | //~ } |
| 87 | |
| 88 | // Auxiliary to convert from MATLAB encoding to ours ("by-rows") |
| 89 | void* matlabToBrArray(const void* matlabArray, const mwSize* dimensions, int nbDims, int isInteger) |
| 90 | { |
| 91 | mwSize totalDim = 1; |
| 92 | for (int i=0; i<nbDims; i++) |
| 93 | totalDim *= dimensions[i]; |
| 94 | size_t elementSize = isInteger |
| 95 | ? sizeof(Int) |
| 96 | : sizeof(Real); |
| 97 | |
| 98 | void* brArray = malloc(totalDim*elementSize); |
| 99 | for (mwSize u=0; u<totalDim; u++) |
| 100 | { |
| 101 | mwSize prodDimLeft = dimensions[0]; |
| 102 | mwSize prodDimRight = 1; |
| 103 | mwSize prodDimInIndex = totalDim / dimensions[0]; |
| 104 | mwSize index = 0; |
| 105 | for (int v=0; v<nbDims; v++) |
| 106 | { |
| 107 | index += ((u % prodDimLeft) / prodDimRight) * prodDimInIndex; |
| 108 | if (v+1 < nbDims) |
| 109 | { |
| 110 | prodDimInIndex /= dimensions[v+1]; |
| 111 | prodDimLeft *= dimensions[v+1]; |
| 112 | } |
| 113 | prodDimRight *= dimensions[v]; |
| 114 | } |
| 115 | if (isInteger) |
| 116 | ((Int*)brArray)[index] = ((Int*)matlabArray)[u]; |
| 117 | else |
| 118 | ((Real*)brArray)[index] = ((Real*)matlabArray)[u]; |
| 119 | } |
| 120 | return brArray; |
| 121 | } |
| 122 | |
| 123 | // Read array by columns (as in MATLAB) and return by-rows encoding |
| 124 | void* readArray(const char* fileName, const mwSize* dimensions, int nbDims, int isInteger) |
| 125 | { |
| 126 | // need to prepend '../data/' (not really nice code...) |
| 127 | char* fullFileName = (char*)calloc(8+strlen(fileName)+1,sizeof(char)); |
| 128 | strcat(fullFileName, "../data/"); |
| 129 | strcat(fullFileName, fileName); |
| 130 | FILE* file = fopen(fullFileName, "r"); |
| 131 | free(fullFileName); |
| 132 | |
| 133 | mwSize totalDim = 1; |
| 134 | for (int i=0; i<nbDims; i++) |
| 135 | totalDim *= dimensions[i]; |
| 136 | size_t elementSize = isInteger |
| 137 | ? sizeof(Int) |
| 138 | : sizeof(Real); |
| 139 | |
| 140 | // read all values, and convert them to by-rows matrices format |
| 141 | void* matlabArray = malloc(totalDim*elementSize); |
| 142 | char curChar = ' '; |
| 143 | char bufferNum[64]; |
| 144 | for (mwSize u=0; u<totalDim; u++) |
| 145 | { |
| 146 | // position to next non-separator character |
| 147 | while (!feof(file) && (curChar==' ' || curChar=='\n' || curChar=='\t' || curChar==',')) |
| 148 | curChar = fgetc(file); |
| 149 | // read number (as a string) |
| 150 | int bufferIndex = 0; |
| 151 | while (!feof(file) && curChar!=' ' && curChar!='\n' && curChar!='\t' && curChar!=',') |
| 152 | { |
| 153 | bufferNum[bufferIndex++] = curChar; |
| 154 | curChar = fgetc(file); |
| 155 | } |
| 156 | bufferNum[bufferIndex] = 0; |
| 157 | // transform string into Real, and store it at appropriate location |
| 158 | if (isInteger) |
| 159 | ((Int*)matlabArray)[u] = atoi(bufferNum); |
| 160 | else |
| 161 | ((Real*)matlabArray)[u] = atof(bufferNum); |
| 162 | } |
| 163 | fclose(file); |
| 164 | |
| 165 | void* brArray = matlabToBrArray(matlabArray, dimensions, nbDims, isInteger); |
| 166 | free(matlabArray); |
| 167 | return brArray; |
| 168 | } |