[f734e7d] | 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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[e3a9733] | 8 | #define USE_KAHAN_SUMMATION 0 |
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| 9 | |
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[f734e7d] | 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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[960cd80] | 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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[29f27df] | 18 | #include <limits> |
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[caf768d] | 19 | #include <float.h> |
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| 20 | #define kernel extern "C" __declspec( dllexport ) |
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[750ffa5] | 21 | inline double trunc(double x) { return x>=0?floor(x):-floor(-x); } |
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[960cd80] | 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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[f734e7d] | 50 | #else |
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[caf768d] | 51 | #define kernel extern "C" |
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[f734e7d] | 52 | #endif |
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[750ffa5] | 53 | inline void SINCOS(double angle, double &svar, double &cvar) { svar=sin(angle); cvar=cos(angle); } |
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[f734e7d] | 54 | # else |
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[95e861b] | 55 | #include <stdio.h> |
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[750ffa5] | 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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[f734e7d] | 58 | #define kernel |
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[750ffa5] | 59 | #define SINCOS(angle,svar,cvar) do {const double _t_=angle; svar=sin(_t_);cvar=cos(_t_);} while (0) |
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[f734e7d] | 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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[750ffa5] | 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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[f734e7d] | 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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[deac08c] | 69 | # if defined(USE_SINCOS) |
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[f734e7d] | 70 | # define SINCOS(angle,svar,cvar) svar=sincos(angle,&cvar) |
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| 71 | # else |
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[750ffa5] | 72 | # define SINCOS(angle,svar,cvar) do {const double _t_=angle; svar=sin(_t_);cvar=cos(_t_);} while (0) |
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[f734e7d] | 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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[deac08c] | 91 | // Non-standard function library |
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| 92 | // pi/180, used for converting between degrees and radians |
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| 93 | // 4/3 pi for computing sphere volumes |
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| 94 | // square and cube for computing squares and cubes |
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[f734e7d] | 95 | #ifndef M_PI_180 |
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| 96 | # define M_PI_180 0.017453292519943295 |
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| 97 | #endif |
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[deac08c] | 98 | #ifndef M_4PI_3 |
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| 99 | # define M_4PI_3 4.18879020478639 |
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| 100 | #endif |
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| 101 | inline double square(double x) { return pow(x,2.0); } |
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| 102 | //inline double square(double x) { return pown(x,2); } |
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| 103 | //inline double square(x) { return x*x; } |
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| 104 | inline double cube(double x) { return x*x*x; } |
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[f734e7d] | 105 | |
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| 106 | |
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| 107 | %(DEFINES)s |
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| 108 | |
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| 109 | %(SOURCES)s |
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| 110 | |
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| 111 | /* |
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| 112 | ########################################################## |
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| 113 | # # |
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| 114 | # !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! # |
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| 115 | # !! !! # |
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| 116 | # !! KEEP THIS CODE CONSISTENT WITH KERNELPY.PY !! # |
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| 117 | # !! !! # |
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| 118 | # !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! # |
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| 119 | # # |
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| 120 | ########################################################## |
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| 121 | */ |
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| 122 | |
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| 123 | #ifdef IQ_KERNEL_NAME |
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| 124 | kernel void IQ_KERNEL_NAME( |
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| 125 | global const double *q, |
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| 126 | global double *result, |
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| 127 | const int Nq, |
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| 128 | #ifdef IQ_OPEN_LOOPS |
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| 129 | #ifdef USE_OPENCL |
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| 130 | global double *loops_g, |
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| 131 | #endif |
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| 132 | local double *loops, |
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| 133 | const double cutoff, |
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| 134 | IQ_DISPERSION_LENGTH_DECLARATIONS, |
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| 135 | #endif |
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| 136 | IQ_FIXED_PARAMETER_DECLARATIONS |
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| 137 | ) |
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| 138 | { |
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| 139 | #ifdef USE_OPENCL |
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| 140 | #ifdef IQ_OPEN_LOOPS |
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| 141 | // copy loops info to local memory |
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| 142 | event_t e = async_work_group_copy(loops, loops_g, (IQ_DISPERSION_LENGTH_SUM)*2, 0); |
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| 143 | wait_group_events(1, &e); |
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| 144 | #endif |
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| 145 | |
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| 146 | int i = get_global_id(0); |
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| 147 | if (i < Nq) |
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| 148 | #else |
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| 149 | #pragma omp parallel for |
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| 150 | for (int i=0; i < Nq; i++) |
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| 151 | #endif |
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| 152 | { |
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| 153 | const double qi = q[i]; |
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| 154 | #ifdef IQ_OPEN_LOOPS |
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| 155 | double ret=0.0, norm=0.0; |
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| 156 | #ifdef VOLUME_PARAMETERS |
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| 157 | double vol=0.0, norm_vol=0.0; |
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| 158 | #endif |
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| 159 | IQ_OPEN_LOOPS |
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| 160 | //for (int radius_i=0; radius_i < Nradius; radius_i++) { |
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| 161 | // const double radius = loops[2*(radius_i)]; |
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| 162 | // const double radius_w = loops[2*(radius_i)+1]; |
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| 163 | |
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| 164 | const double weight = IQ_WEIGHT_PRODUCT; |
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| 165 | if (weight > cutoff) { |
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[750ffa5] | 166 | const double scattering = Iq(qi, IQ_PARAMETERS); |
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[c138211] | 167 | // allow kernels to exclude invalid regions by returning NaN |
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| 168 | if (!isnan(scattering)) { |
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[750ffa5] | 169 | ret += weight*scattering; |
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[f734e7d] | 170 | norm += weight; |
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| 171 | #ifdef VOLUME_PARAMETERS |
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| 172 | const double vol_weight = VOLUME_WEIGHT_PRODUCT; |
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| 173 | vol += vol_weight*form_volume(VOLUME_PARAMETERS); |
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| 174 | norm_vol += vol_weight; |
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| 175 | #endif |
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[c138211] | 176 | } |
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[750ffa5] | 177 | //else { printf("exclude qx,qy,I:%%g,%%g,%%g\n",qi,scattering); } |
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[f734e7d] | 178 | } |
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| 179 | IQ_CLOSE_LOOPS |
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| 180 | #ifdef VOLUME_PARAMETERS |
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| 181 | if (vol*norm_vol != 0.0) { |
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| 182 | ret *= norm_vol/vol; |
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| 183 | } |
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| 184 | #endif |
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| 185 | result[i] = scale*ret/norm+background; |
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| 186 | #else |
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| 187 | result[i] = scale*Iq(qi, IQ_PARAMETERS) + background; |
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| 188 | #endif |
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| 189 | } |
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| 190 | } |
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| 191 | #endif |
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| 192 | |
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| 193 | |
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| 194 | #ifdef IQXY_KERNEL_NAME |
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| 195 | kernel void IQXY_KERNEL_NAME( |
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| 196 | global const double *qx, |
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| 197 | global const double *qy, |
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| 198 | global double *result, |
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| 199 | const int Nq, |
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| 200 | #ifdef IQXY_OPEN_LOOPS |
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| 201 | #ifdef USE_OPENCL |
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| 202 | global double *loops_g, |
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| 203 | #endif |
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| 204 | local double *loops, |
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| 205 | const double cutoff, |
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| 206 | IQXY_DISPERSION_LENGTH_DECLARATIONS, |
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| 207 | #endif |
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| 208 | IQXY_FIXED_PARAMETER_DECLARATIONS |
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| 209 | ) |
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| 210 | { |
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| 211 | #ifdef USE_OPENCL |
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| 212 | #ifdef IQXY_OPEN_LOOPS |
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| 213 | // copy loops info to local memory |
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| 214 | event_t e = async_work_group_copy(loops, loops_g, (IQXY_DISPERSION_LENGTH_SUM)*2, 0); |
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| 215 | wait_group_events(1, &e); |
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| 216 | #endif |
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| 217 | |
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| 218 | int i = get_global_id(0); |
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| 219 | if (i < Nq) |
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| 220 | #else |
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| 221 | #pragma omp parallel for |
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| 222 | for (int i=0; i < Nq; i++) |
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| 223 | #endif |
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| 224 | { |
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| 225 | const double qxi = qx[i]; |
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| 226 | const double qyi = qy[i]; |
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[e3a9733] | 227 | #if USE_KAHAN_SUMMATION |
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| 228 | double accumulated_error = 0.0; |
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| 229 | #endif |
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[f734e7d] | 230 | #ifdef IQXY_OPEN_LOOPS |
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| 231 | double ret=0.0, norm=0.0; |
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| 232 | #ifdef VOLUME_PARAMETERS |
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| 233 | double vol=0.0, norm_vol=0.0; |
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| 234 | #endif |
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| 235 | IQXY_OPEN_LOOPS |
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| 236 | //for (int radius_i=0; radius_i < Nradius; radius_i++) { |
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| 237 | // const double radius = loops[2*(radius_i)]; |
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| 238 | // const double radius_w = loops[2*(radius_i)+1]; |
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| 239 | |
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| 240 | const double weight = IQXY_WEIGHT_PRODUCT; |
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| 241 | if (weight > cutoff) { |
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| 242 | |
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[750ffa5] | 243 | const double scattering = Iqxy(qxi, qyi, IQXY_PARAMETERS); |
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[9c79c32] | 244 | if (!isnan(scattering)) { // if scattering is bad, exclude it from sum |
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[062c56d] | 245 | //if (scattering >= 0.0) { // scattering cannot be negative |
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[f734e7d] | 246 | // TODO: use correct angle for spherical correction |
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| 247 | // Definition of theta and phi are probably reversed relative to the |
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| 248 | // equation which gave rise to this correction, leading to an |
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| 249 | // attenuation of the pattern as theta moves through pi/2. Either |
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| 250 | // reverse the meanings of phi and theta in the forms, or use phi |
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| 251 | // rather than theta in this correction. Current code uses cos(theta) |
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| 252 | // so that values match those of sasview. |
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[e3a9733] | 253 | #if defined(IQXY_HAS_THETA) // && 0 |
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[f734e7d] | 254 | const double spherical_correction |
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[9c79c32] | 255 | = (Ntheta>1 ? fabs(cos(M_PI_180*theta))*M_PI_2:1.0); |
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[e3a9733] | 256 | const double next = spherical_correction * weight * scattering; |
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| 257 | #else |
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| 258 | const double next = weight * scattering; |
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| 259 | #endif |
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| 260 | #if USE_KAHAN_SUMMATION |
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| 261 | const double y = next - accumulated_error; |
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| 262 | const double t = ret + y; |
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| 263 | accumulated_error = (t - ret) - y; |
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| 264 | ret = t; |
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[f734e7d] | 265 | #else |
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[e3a9733] | 266 | ret += next; |
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[f734e7d] | 267 | #endif |
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| 268 | norm += weight; |
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| 269 | #ifdef VOLUME_PARAMETERS |
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| 270 | const double vol_weight = VOLUME_WEIGHT_PRODUCT; |
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| 271 | vol += vol_weight*form_volume(VOLUME_PARAMETERS); |
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| 272 | norm_vol += vol_weight; |
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[718514b] | 273 | #endif |
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[9c79c32] | 274 | } |
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[750ffa5] | 275 | //else { printf("exclude qx,qy,I:%%g,%%g,%%g\n",qi,scattering); } |
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[f734e7d] | 276 | } |
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| 277 | IQXY_CLOSE_LOOPS |
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| 278 | #ifdef VOLUME_PARAMETERS |
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| 279 | if (vol*norm_vol != 0.0) { |
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| 280 | ret *= norm_vol/vol; |
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| 281 | } |
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| 282 | #endif |
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| 283 | result[i] = scale*ret/norm+background; |
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| 284 | #else |
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| 285 | result[i] = scale*Iqxy(qxi, qyi, IQXY_PARAMETERS) + background; |
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| 286 | #endif |
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| 287 | } |
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| 288 | } |
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| 289 | #endif |
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