1 | /* SimpleFit.c |
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2 | |
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3 | A simplified project designed to act as a template for your curve fitting function. |
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4 | The fitting function is a simple polynomial. It works but is of no practical use. |
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5 | */ |
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6 | |
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7 | #pragma XOP_SET_STRUCT_PACKING // All structures are 2-byte-aligned. |
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8 | |
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9 | #include "XOPStandardHeaders.h" // Include ANSI headers, Mac headers, IgorXOP.h, XOP.h and XOPSupport.h |
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10 | #include "SANSAnalysis.h" |
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11 | #include "libSANSAnalysis.h" |
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12 | #include "StructureFactor.h" |
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13 | |
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14 | |
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15 | //Hard Sphere Structure Factor |
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16 | // |
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17 | int |
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18 | HardSphereStructX(FitParamsPtr p) |
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19 | { |
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20 | double *dp; // Pointer to double precision wave data. |
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21 | float *fp; // Pointer to single precision wave data. |
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22 | double q; |
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23 | |
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24 | if (p->waveHandle == NIL) { |
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25 | SetNaN64(&p->result); |
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26 | return NON_EXISTENT_WAVE; |
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27 | } |
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28 | |
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29 | q= p->x; |
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30 | |
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31 | switch(WaveType(p->waveHandle)){ // We can handle single and double precision coefficient waves. |
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32 | case NT_FP32: |
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33 | fp= WaveData(p->waveHandle); |
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34 | SetNaN64(&p->result); |
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35 | return REQUIRES_SP_OR_DP_WAVE; //not quite true, but good enough for now AJJ 4/23/07 |
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36 | case NT_FP64: |
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37 | dp= WaveData(p->waveHandle); |
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38 | p->result = HardSphereStruct(dp,q); |
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39 | return 0; |
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40 | default: // We can't handle this wave data type. |
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41 | SetNaN64(&p->result); |
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42 | return REQUIRES_SP_OR_DP_WAVE; |
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43 | } |
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44 | return 0; |
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45 | } |
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46 | |
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47 | //Sticky Hard Sphere Structure Factor |
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48 | // |
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49 | int |
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50 | StickyHS_StructX(FitParamsPtr p) |
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51 | { |
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52 | double *dp; // Pointer to double precision wave data. |
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53 | float *fp; // Pointer to single precision wave data. |
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54 | double q; |
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55 | |
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56 | if (p->waveHandle == NIL) { |
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57 | SetNaN64(&p->result); |
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58 | return NON_EXISTENT_WAVE; |
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59 | } |
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60 | |
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61 | q= p->x; |
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62 | |
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63 | switch(WaveType(p->waveHandle)){ // We can handle single and double precision coefficient waves. |
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64 | case NT_FP32: |
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65 | fp= WaveData(p->waveHandle); |
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66 | SetNaN64(&p->result); |
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67 | return REQUIRES_SP_OR_DP_WAVE; //not quite true, but good enough for now AJJ 4/23/07 |
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68 | case NT_FP64: |
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69 | dp= WaveData(p->waveHandle); |
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70 | p->result = StickyHS_Struct(dp,q); |
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71 | default: // We can't handle this wave data type. |
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72 | SetNaN64(&p->result); |
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73 | return REQUIRES_SP_OR_DP_WAVE; |
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74 | } |
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75 | return 0; |
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76 | } |
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77 | |
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78 | |
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79 | |
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80 | // SUBROUTINE SQWELL: CALCULATES THE STRUCTURE FACTOR FOR A |
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81 | // DISPERSION OF MONODISPERSE HARD SPHERES |
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82 | // IN THE Mean Spherical APPROXIMATION ASSUMING THE SPHERES |
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83 | // INTERACT THROUGH A SQUARE WELL POTENTIAL. |
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84 | //** not the best choice of closure ** see note below |
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85 | // REFS: SHARMA,SHARMA, PHYSICA 89A,(1977),212 |
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86 | int |
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87 | SquareWellStructX(FitParamsPtr p) |
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88 | { |
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89 | double *dp; // Pointer to double precision wave data. |
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90 | float *fp; // Pointer to single precision wave data. |
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91 | double q; |
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92 | |
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93 | if (p->waveHandle == NIL) { |
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94 | SetNaN64(&p->result); |
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95 | return NON_EXISTENT_WAVE; |
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96 | } |
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97 | |
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98 | q= p->x; |
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99 | |
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100 | switch(WaveType(p->waveHandle)){ // We can handle single and double precision coefficient waves. |
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101 | case NT_FP32: |
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102 | fp= WaveData(p->waveHandle); |
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103 | SetNaN64(&p->result); |
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104 | return REQUIRES_SP_OR_DP_WAVE; //not quite true, but good enough for now AJJ 4/23/07 |
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105 | case NT_FP64: |
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106 | dp= WaveData(p->waveHandle); |
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107 | p->result = SquareWellStruct(dp,q); |
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108 | default: // We can't handle this wave data type. |
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109 | SetNaN64(&p->result); |
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110 | return REQUIRES_SP_OR_DP_WAVE; |
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111 | } |
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112 | |
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113 | return 0; |
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114 | } |
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115 | |
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116 | // Hayter-Penfold (rescaled) MSA structure factor for screened Coulomb interactions |
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117 | // |
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118 | int |
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119 | HayterPenfoldMSAX(FitParamsPtr p) |
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120 | { |
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121 | double *dp; // Pointer to double precision wave data. |
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122 | float *fp; // Pointer to single precision wave data. |
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123 | double q; |
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124 | |
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125 | if (p->waveHandle == NIL) { |
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126 | SetNaN64(&p->result); |
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127 | return NON_EXISTENT_WAVE; |
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128 | } |
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129 | |
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130 | q= p->x; |
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131 | |
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132 | switch(WaveType(p->waveHandle)){ // We can handle single and double precision coefficient waves. |
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133 | case NT_FP32: |
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134 | fp= WaveData(p->waveHandle); |
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135 | SetNaN64(&p->result); |
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136 | return REQUIRES_SP_OR_DP_WAVE; //not quite true, but good enough for now AJJ 4/23/07 |
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137 | case NT_FP64: |
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138 | dp= WaveData(p->waveHandle); |
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139 | p->result = HayterPenfoldMSA(dp,q); |
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140 | return 0; |
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141 | default: // We can't handle this wave data type. |
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142 | SetNaN64(&p->result); |
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143 | return REQUIRES_SP_OR_DP_WAVE; |
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144 | } |
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145 | |
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146 | return 0; |
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147 | } |
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148 | |
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149 | |
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150 | // called as DiamCylX(hcyl,rcyl) |
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151 | int |
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152 | DiamCylX(DiamParamsPtr p) |
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153 | { |
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154 | double hcyl,rcyl; |
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155 | |
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156 | hcyl = p->p1; |
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157 | rcyl = p->p2; |
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158 | |
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159 | p->result = DiamCyl(hcyl,rcyl); |
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160 | |
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161 | return(0); |
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162 | } |
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163 | |
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164 | //prolate OR oblate ellipsoids |
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165 | //aa is the axis of rotation |
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166 | //if aa>bb, then PROLATE |
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167 | //if aa<bb, then OBLATE |
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168 | // A. Isihara, J. Chem. Phys. 18, 1446 (1950) |
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169 | //returns DIAMETER |
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170 | // called as DiamEllipX(aa,bb) |
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171 | int |
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172 | DiamEllipX(DiamParamsPtr p) |
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173 | { |
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174 | |
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175 | double aa,bb; |
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176 | |
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177 | aa = p->p1; |
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178 | bb = p->p2; |
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179 | |
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180 | p->result = DiamEllip(aa,bb); |
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181 | |
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182 | return(0); |
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183 | } |
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184 | |
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185 | |
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186 | #pragma XOP_RESET_STRUCT_PACKING // All structures are 2-byte-aligned. |
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187 | |
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188 | ///////////end of XOP |
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189 | |
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190 | |
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