1 | // GENERATED CODE --- DO NOT EDIT --- |
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2 | // Code is produced by sasmodels.gen from sasmodels/models/MODEL.c |
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3 | |
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4 | #ifdef __OPENCL_VERSION__ |
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5 | # define USE_OPENCL |
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6 | #endif |
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7 | |
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8 | #define USE_KAHAN_SUMMATION 0 |
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9 | |
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10 | // If opencl is not available, then we are compiling a C function |
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11 | // Note: if using a C++ compiler, then define kernel as extern "C" |
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12 | #ifndef USE_OPENCL |
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13 | # ifdef __cplusplus |
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14 | #include <cstdio> |
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15 | #include <cmath> |
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16 | using namespace std; |
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17 | #if defined(_MSC_VER) |
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18 | #include <limits> |
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19 | #include <float.h> |
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20 | #define kernel extern "C" __declspec( dllexport ) |
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21 | inline double trunc(double x) { return x>=0?floor(x):-floor(-x); } |
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22 | inline double fmin(double x, double y) { return x>y ? y : x; } |
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23 | inline double fmax(double x, double y) { return x<y ? y : x; } |
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24 | inline double isnan(double x) { return _isnan(x); } |
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25 | #define NAN (std::numeric_limits<double>::quiet_NaN()) // non-signalling NaN |
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26 | static double cephes_expm1(double x) { |
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27 | // Adapted from the cephes math library. |
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28 | // Copyright 1984 - 1992 by Stephen L. Moshier |
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29 | if (x != x || x == 0.0) { |
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30 | return x; // NaN and +/- 0 |
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31 | } else if (x < -0.5 || x > 0.5) { |
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32 | return exp(x) - 1.0; |
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33 | } else { |
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34 | const double xsq = x*x; |
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35 | const double p = ((( |
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36 | +1.2617719307481059087798E-4)*xsq |
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37 | +3.0299440770744196129956E-2)*xsq |
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38 | +9.9999999999999999991025E-1); |
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39 | const double q = (((( |
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40 | +3.0019850513866445504159E-6)*xsq |
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41 | +2.5244834034968410419224E-3)*xsq |
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42 | +2.2726554820815502876593E-1)*xsq |
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43 | +2.0000000000000000000897E0); |
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44 | double r = x * p; |
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45 | r = r / (q - r); |
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46 | return r+r; |
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47 | } |
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48 | } |
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49 | #define expm1 cephes_expm1 |
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50 | #else |
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51 | #define kernel extern "C" |
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52 | #endif |
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53 | inline void SINCOS(double angle, double &svar, double &cvar) { svar=sin(angle); cvar=cos(angle); } |
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54 | # else |
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55 | #include <stdio.h> |
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56 | #include <tgmath.h> // C99 type-generic math, so sin(float) => sinf |
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57 | // MSVC doesn't support C99, so no need for dllexport on C99 branch |
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58 | #define kernel |
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59 | #define SINCOS(angle,svar,cvar) do {const double _t_=angle; svar=sin(_t_);cvar=cos(_t_);} while (0) |
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60 | # endif |
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61 | # define global |
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62 | # define local |
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63 | # define constant const |
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64 | // OpenCL powr(a,b) = C99 pow(a,b), b >= 0 |
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65 | // OpenCL pown(a,b) = C99 pow(a,b), b integer |
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66 | # define powr(a,b) pow(a,b) |
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67 | # define pown(a,b) pow(a,b) |
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68 | #else |
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69 | # ifdef USE_SINCOS |
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70 | # define SINCOS(angle,svar,cvar) svar=sincos(angle,&cvar) |
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71 | # else |
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72 | # define SINCOS(angle,svar,cvar) do {const double _t_=angle; svar=sin(_t_);cvar=cos(_t_);} while (0) |
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73 | # endif |
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74 | #endif |
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75 | |
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76 | // Standard mathematical constants: |
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77 | // M_E, M_LOG2E, M_LOG10E, M_LN2, M_LN10, M_PI, M_PI_2=pi/2, M_PI_4=pi/4, |
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78 | // M_1_PI=1/pi, M_2_PI=2/pi, M_2_SQRTPI=2/sqrt(pi), SQRT2, SQRT1_2=sqrt(1/2) |
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79 | // OpenCL defines M_constant_F for float constants, and nothing if double |
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80 | // is not enabled on the card, which is why these constants may be missing |
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81 | #ifndef M_PI |
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82 | # define M_PI 3.141592653589793 |
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83 | #endif |
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84 | #ifndef M_PI_2 |
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85 | # define M_PI_2 1.570796326794897 |
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86 | #endif |
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87 | #ifndef M_PI_4 |
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88 | # define M_PI_4 0.7853981633974483 |
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89 | #endif |
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90 | |
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91 | // Non-standard pi/180, used for converting between degrees and radians |
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92 | #ifndef M_PI_180 |
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93 | # define M_PI_180 0.017453292519943295 |
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94 | #endif |
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95 | |
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96 | |
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97 | %(DEFINES)s |
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98 | |
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99 | %(SOURCES)s |
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100 | |
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101 | /* |
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102 | ########################################################## |
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103 | # # |
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104 | # !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! # |
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105 | # !! !! # |
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106 | # !! KEEP THIS CODE CONSISTENT WITH KERNELPY.PY !! # |
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107 | # !! !! # |
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108 | # !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! # |
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109 | # # |
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110 | ########################################################## |
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111 | */ |
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112 | |
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113 | #ifdef IQ_KERNEL_NAME |
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114 | kernel void IQ_KERNEL_NAME( |
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115 | global const double *q, |
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116 | global double *result, |
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117 | const int Nq, |
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118 | #ifdef IQ_OPEN_LOOPS |
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119 | #ifdef USE_OPENCL |
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120 | global double *loops_g, |
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121 | #endif |
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122 | local double *loops, |
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123 | const double cutoff, |
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124 | IQ_DISPERSION_LENGTH_DECLARATIONS, |
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125 | #endif |
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126 | IQ_FIXED_PARAMETER_DECLARATIONS |
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127 | ) |
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128 | { |
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129 | #ifdef USE_OPENCL |
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130 | #ifdef IQ_OPEN_LOOPS |
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131 | // copy loops info to local memory |
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132 | event_t e = async_work_group_copy(loops, loops_g, (IQ_DISPERSION_LENGTH_SUM)*2, 0); |
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133 | wait_group_events(1, &e); |
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134 | #endif |
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135 | |
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136 | int i = get_global_id(0); |
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137 | if (i < Nq) |
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138 | #else |
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139 | #pragma omp parallel for |
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140 | for (int i=0; i < Nq; i++) |
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141 | #endif |
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142 | { |
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143 | const double qi = q[i]; |
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144 | #ifdef IQ_OPEN_LOOPS |
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145 | double ret=0.0, norm=0.0; |
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146 | #ifdef VOLUME_PARAMETERS |
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147 | double vol=0.0, norm_vol=0.0; |
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148 | #endif |
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149 | IQ_OPEN_LOOPS |
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150 | //for (int radius_i=0; radius_i < Nradius; radius_i++) { |
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151 | // const double radius = loops[2*(radius_i)]; |
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152 | // const double radius_w = loops[2*(radius_i)+1]; |
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153 | |
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154 | const double weight = IQ_WEIGHT_PRODUCT; |
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155 | if (weight > cutoff) { |
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156 | const double scattering = Iq(qi, IQ_PARAMETERS); |
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157 | // allow kernels to exclude invalid regions by returning NaN |
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158 | if (!isnan(scattering)) { |
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159 | ret += weight*scattering; |
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160 | norm += weight; |
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161 | #ifdef VOLUME_PARAMETERS |
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162 | const double vol_weight = VOLUME_WEIGHT_PRODUCT; |
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163 | vol += vol_weight*form_volume(VOLUME_PARAMETERS); |
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164 | norm_vol += vol_weight; |
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165 | #endif |
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166 | } |
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167 | //else { printf("exclude qx,qy,I:%%g,%%g,%%g\n",qi,scattering); } |
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168 | } |
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169 | IQ_CLOSE_LOOPS |
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170 | #ifdef VOLUME_PARAMETERS |
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171 | if (vol*norm_vol != 0.0) { |
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172 | ret *= norm_vol/vol; |
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173 | } |
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174 | #endif |
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175 | result[i] = scale*ret/norm+background; |
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176 | #else |
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177 | result[i] = scale*Iq(qi, IQ_PARAMETERS) + background; |
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178 | #endif |
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179 | } |
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180 | } |
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181 | #endif |
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182 | |
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183 | |
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184 | #ifdef IQXY_KERNEL_NAME |
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185 | kernel void IQXY_KERNEL_NAME( |
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186 | global const double *qx, |
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187 | global const double *qy, |
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188 | global double *result, |
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189 | const int Nq, |
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190 | #ifdef IQXY_OPEN_LOOPS |
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191 | #ifdef USE_OPENCL |
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192 | global double *loops_g, |
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193 | #endif |
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194 | local double *loops, |
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195 | const double cutoff, |
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196 | IQXY_DISPERSION_LENGTH_DECLARATIONS, |
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197 | #endif |
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198 | IQXY_FIXED_PARAMETER_DECLARATIONS |
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199 | ) |
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200 | { |
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201 | #ifdef USE_OPENCL |
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202 | #ifdef IQXY_OPEN_LOOPS |
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203 | // copy loops info to local memory |
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204 | event_t e = async_work_group_copy(loops, loops_g, (IQXY_DISPERSION_LENGTH_SUM)*2, 0); |
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205 | wait_group_events(1, &e); |
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206 | #endif |
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207 | |
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208 | int i = get_global_id(0); |
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209 | if (i < Nq) |
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210 | #else |
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211 | #pragma omp parallel for |
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212 | for (int i=0; i < Nq; i++) |
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213 | #endif |
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214 | { |
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215 | const double qxi = qx[i]; |
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216 | const double qyi = qy[i]; |
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217 | #if USE_KAHAN_SUMMATION |
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218 | double accumulated_error = 0.0; |
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219 | #endif |
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220 | #ifdef IQXY_OPEN_LOOPS |
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221 | double ret=0.0, norm=0.0; |
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222 | #ifdef VOLUME_PARAMETERS |
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223 | double vol=0.0, norm_vol=0.0; |
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224 | #endif |
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225 | IQXY_OPEN_LOOPS |
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226 | //for (int radius_i=0; radius_i < Nradius; radius_i++) { |
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227 | // const double radius = loops[2*(radius_i)]; |
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228 | // const double radius_w = loops[2*(radius_i)+1]; |
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229 | |
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230 | const double weight = IQXY_WEIGHT_PRODUCT; |
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231 | if (weight > cutoff) { |
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232 | |
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233 | const double scattering = Iqxy(qxi, qyi, IQXY_PARAMETERS); |
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234 | if (!isnan(scattering)) { // if scattering is bad, exclude it from sum |
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235 | //if (scattering >= 0.0) { // scattering cannot be negative |
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236 | // TODO: use correct angle for spherical correction |
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237 | // Definition of theta and phi are probably reversed relative to the |
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238 | // equation which gave rise to this correction, leading to an |
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239 | // attenuation of the pattern as theta moves through pi/2. Either |
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240 | // reverse the meanings of phi and theta in the forms, or use phi |
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241 | // rather than theta in this correction. Current code uses cos(theta) |
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242 | // so that values match those of sasview. |
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243 | #if defined(IQXY_HAS_THETA) // && 0 |
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244 | const double spherical_correction |
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245 | = (Ntheta>1 ? fabs(cos(M_PI_180*theta))*M_PI_2:1.0); |
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246 | const double next = spherical_correction * weight * scattering; |
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247 | #else |
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248 | const double next = weight * scattering; |
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249 | #endif |
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250 | #if USE_KAHAN_SUMMATION |
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251 | const double y = next - accumulated_error; |
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252 | const double t = ret + y; |
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253 | accumulated_error = (t - ret) - y; |
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254 | ret = t; |
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255 | #else |
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256 | ret += next; |
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257 | #endif |
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258 | norm += weight; |
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259 | #ifdef VOLUME_PARAMETERS |
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260 | const double vol_weight = VOLUME_WEIGHT_PRODUCT; |
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261 | vol += vol_weight*form_volume(VOLUME_PARAMETERS); |
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262 | #endif |
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263 | norm_vol += vol_weight; |
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264 | } |
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265 | //else { printf("exclude qx,qy,I:%%g,%%g,%%g\n",qi,scattering); } |
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266 | } |
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267 | IQXY_CLOSE_LOOPS |
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268 | #ifdef VOLUME_PARAMETERS |
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269 | if (vol*norm_vol != 0.0) { |
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270 | ret *= norm_vol/vol; |
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271 | } |
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272 | #endif |
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273 | result[i] = scale*ret/norm+background; |
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274 | #else |
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275 | result[i] = scale*Iqxy(qxi, qyi, IQXY_PARAMETERS) + background; |
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276 | #endif |
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277 | } |
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278 | } |
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279 | #endif |
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