[3832f27] | 1 | #line 1 "kernel_template.c" |
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[f734e7d] | 2 | // GENERATED CODE --- DO NOT EDIT --- |
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| 3 | // Code is produced by sasmodels.gen from sasmodels/models/MODEL.c |
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| 4 | |
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| 5 | #ifdef __OPENCL_VERSION__ |
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| 6 | # define USE_OPENCL |
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| 7 | #endif |
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| 8 | |
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[e3a9733] | 9 | #define USE_KAHAN_SUMMATION 0 |
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| 10 | |
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[f734e7d] | 11 | // If opencl is not available, then we are compiling a C function |
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| 12 | // Note: if using a C++ compiler, then define kernel as extern "C" |
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| 13 | #ifndef USE_OPENCL |
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[5efe850] | 14 | // Use SAS_DOUBLE to force the use of double even for float kernels |
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| 15 | # define SAS_DOUBLE dou ## ble |
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[f734e7d] | 16 | # ifdef __cplusplus |
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[960cd80] | 17 | #include <cstdio> |
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| 18 | #include <cmath> |
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| 19 | using namespace std; |
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| 20 | #if defined(_MSC_VER) |
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[29f27df] | 21 | #include <limits> |
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[caf768d] | 22 | #include <float.h> |
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| 23 | #define kernel extern "C" __declspec( dllexport ) |
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[750ffa5] | 24 | inline double trunc(double x) { return x>=0?floor(x):-floor(-x); } |
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[960cd80] | 25 | inline double fmin(double x, double y) { return x>y ? y : x; } |
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| 26 | inline double fmax(double x, double y) { return x<y ? y : x; } |
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[2a55a6f] | 27 | #define isnan(x) _isnan(x) |
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| 28 | #define isinf(x) (!_finite(x)) |
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| 29 | #define isfinite(x) _finite(x) |
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[960cd80] | 30 | #define NAN (std::numeric_limits<double>::quiet_NaN()) // non-signalling NaN |
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[2a55a6f] | 31 | #define INFINITY (std::numeric_limits<double>::infinity()) |
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[98cb4d7] | 32 | #define NEED_EXPM1 |
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| 33 | #define NEED_TGAMMA |
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[f734e7d] | 34 | #else |
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[caf768d] | 35 | #define kernel extern "C" |
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[f734e7d] | 36 | #endif |
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[750ffa5] | 37 | inline void SINCOS(double angle, double &svar, double &cvar) { svar=sin(angle); cvar=cos(angle); } |
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[f734e7d] | 38 | # else |
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[95e861b] | 39 | #include <stdio.h> |
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[2a55a6f] | 40 | #if defined(__TINYC__) |
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| 41 | #include <math.h> |
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| 42 | // TODO: test isnan |
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| 43 | inline double _isnan(double x) { return x != x; } // hope this doesn't optimize away! |
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| 44 | #undef isnan |
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| 45 | #define isnan(x) _isnan(x) |
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[5efe850] | 46 | // Defeat the double->float conversion since we don't have tgmath |
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| 47 | inline SAS_DOUBLE trunc(SAS_DOUBLE x) { return x>=0?floor(x):-floor(-x); } |
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| 48 | inline SAS_DOUBLE fmin(SAS_DOUBLE x, SAS_DOUBLE y) { return x>y ? y : x; } |
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| 49 | inline SAS_DOUBLE fmax(SAS_DOUBLE x, SAS_DOUBLE y) { return x<y ? y : x; } |
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[2a55a6f] | 50 | #define NEED_EXPM1 |
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| 51 | #define NEED_TGAMMA |
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| 52 | #else |
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| 53 | #include <tgmath.h> // C99 type-generic math, so sin(float) => sinf |
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| 54 | #endif |
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[750ffa5] | 55 | // MSVC doesn't support C99, so no need for dllexport on C99 branch |
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[f734e7d] | 56 | #define kernel |
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[750ffa5] | 57 | #define SINCOS(angle,svar,cvar) do {const double _t_=angle; svar=sin(_t_);cvar=cos(_t_);} while (0) |
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[f734e7d] | 58 | # endif |
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| 59 | # define global |
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| 60 | # define local |
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| 61 | # define constant const |
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[750ffa5] | 62 | // OpenCL powr(a,b) = C99 pow(a,b), b >= 0 |
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| 63 | // OpenCL pown(a,b) = C99 pow(a,b), b integer |
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[f734e7d] | 64 | # define powr(a,b) pow(a,b) |
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| 65 | # define pown(a,b) pow(a,b) |
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| 66 | #else |
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[deac08c] | 67 | # if defined(USE_SINCOS) |
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[f734e7d] | 68 | # define SINCOS(angle,svar,cvar) svar=sincos(angle,&cvar) |
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| 69 | # else |
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[750ffa5] | 70 | # define SINCOS(angle,svar,cvar) do {const double _t_=angle; svar=sin(_t_);cvar=cos(_t_);} while (0) |
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[f734e7d] | 71 | # endif |
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| 72 | #endif |
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| 73 | |
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[98cb4d7] | 74 | #if defined(NEED_EXPM1) |
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[5efe850] | 75 | static SAS_DOUBLE expm1(SAS_DOUBLE x_in) { |
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| 76 | double x = (double)x_in; // go back to float for single precision kernels |
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[98cb4d7] | 77 | // Adapted from the cephes math library. |
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| 78 | // Copyright 1984 - 1992 by Stephen L. Moshier |
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| 79 | if (x != x || x == 0.0) { |
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| 80 | return x; // NaN and +/- 0 |
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| 81 | } else if (x < -0.5 || x > 0.5) { |
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| 82 | return exp(x) - 1.0; |
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| 83 | } else { |
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| 84 | const double xsq = x*x; |
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| 85 | const double p = ((( |
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| 86 | +1.2617719307481059087798E-4)*xsq |
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| 87 | +3.0299440770744196129956E-2)*xsq |
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| 88 | +9.9999999999999999991025E-1); |
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| 89 | const double q = (((( |
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| 90 | +3.0019850513866445504159E-6)*xsq |
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| 91 | +2.5244834034968410419224E-3)*xsq |
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| 92 | +2.2726554820815502876593E-1)*xsq |
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| 93 | +2.0000000000000000000897E0); |
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| 94 | double r = x * p; |
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| 95 | r = r / (q - r); |
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| 96 | return r+r; |
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| 97 | } |
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| 98 | } |
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| 99 | #endif |
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| 100 | |
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[f734e7d] | 101 | // Standard mathematical constants: |
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| 102 | // 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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| 103 | // 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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| 104 | // OpenCL defines M_constant_F for float constants, and nothing if double |
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| 105 | // is not enabled on the card, which is why these constants may be missing |
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| 106 | #ifndef M_PI |
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| 107 | # define M_PI 3.141592653589793 |
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| 108 | #endif |
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| 109 | #ifndef M_PI_2 |
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| 110 | # define M_PI_2 1.570796326794897 |
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| 111 | #endif |
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| 112 | #ifndef M_PI_4 |
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| 113 | # define M_PI_4 0.7853981633974483 |
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| 114 | #endif |
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[e7678b2] | 115 | #ifndef M_E |
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| 116 | # define M_E 2.718281828459045091 |
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| 117 | #endif |
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[f734e7d] | 118 | |
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[deac08c] | 119 | // Non-standard function library |
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| 120 | // pi/180, used for converting between degrees and radians |
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| 121 | // 4/3 pi for computing sphere volumes |
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| 122 | // square and cube for computing squares and cubes |
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[f734e7d] | 123 | #ifndef M_PI_180 |
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| 124 | # define M_PI_180 0.017453292519943295 |
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| 125 | #endif |
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[deac08c] | 126 | #ifndef M_4PI_3 |
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| 127 | # define M_4PI_3 4.18879020478639 |
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| 128 | #endif |
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[73860b6] | 129 | //inline double square(double x) { return pow(x,2.0); } |
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[deac08c] | 130 | //inline double square(double x) { return pown(x,2); } |
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[cf85329] | 131 | inline double square(double x) { return x*x; } |
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[deac08c] | 132 | inline double cube(double x) { return x*x*x; } |
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[cf85329] | 133 | inline double sinc(double x) { return x==0 ? 1.0 : sin(x)/x; } |
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[f734e7d] | 134 | |
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| 135 | |
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| 136 | %(DEFINES)s |
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| 137 | |
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| 138 | %(SOURCES)s |
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| 139 | |
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| 140 | /* |
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| 141 | ########################################################## |
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| 142 | # # |
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| 143 | # !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! # |
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| 144 | # !! !! # |
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| 145 | # !! KEEP THIS CODE CONSISTENT WITH KERNELPY.PY !! # |
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| 146 | # !! !! # |
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| 147 | # !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! # |
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| 148 | # # |
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| 149 | ########################################################## |
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| 150 | */ |
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| 151 | |
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| 152 | #ifdef IQ_KERNEL_NAME |
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| 153 | kernel void IQ_KERNEL_NAME( |
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| 154 | global const double *q, |
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| 155 | global double *result, |
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| 156 | const int Nq, |
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| 157 | #ifdef IQ_OPEN_LOOPS |
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| 158 | #ifdef USE_OPENCL |
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| 159 | global double *loops_g, |
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| 160 | #endif |
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| 161 | local double *loops, |
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| 162 | const double cutoff, |
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| 163 | IQ_DISPERSION_LENGTH_DECLARATIONS, |
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| 164 | #endif |
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| 165 | IQ_FIXED_PARAMETER_DECLARATIONS |
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| 166 | ) |
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| 167 | { |
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| 168 | #ifdef USE_OPENCL |
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| 169 | #ifdef IQ_OPEN_LOOPS |
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| 170 | // copy loops info to local memory |
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| 171 | event_t e = async_work_group_copy(loops, loops_g, (IQ_DISPERSION_LENGTH_SUM)*2, 0); |
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| 172 | wait_group_events(1, &e); |
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| 173 | #endif |
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| 174 | |
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| 175 | int i = get_global_id(0); |
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| 176 | if (i < Nq) |
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| 177 | #else |
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| 178 | #pragma omp parallel for |
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| 179 | for (int i=0; i < Nq; i++) |
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| 180 | #endif |
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| 181 | { |
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| 182 | const double qi = q[i]; |
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| 183 | #ifdef IQ_OPEN_LOOPS |
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| 184 | double ret=0.0, norm=0.0; |
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| 185 | IQ_OPEN_LOOPS |
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| 186 | //for (int radius_i=0; radius_i < Nradius; radius_i++) { |
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| 187 | // const double radius = loops[2*(radius_i)]; |
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| 188 | // const double radius_w = loops[2*(radius_i)+1]; |
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| 189 | |
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| 190 | const double weight = IQ_WEIGHT_PRODUCT; |
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| 191 | if (weight > cutoff) { |
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[750ffa5] | 192 | const double scattering = Iq(qi, IQ_PARAMETERS); |
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[c138211] | 193 | // allow kernels to exclude invalid regions by returning NaN |
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| 194 | if (!isnan(scattering)) { |
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[750ffa5] | 195 | ret += weight*scattering; |
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[f734e7d] | 196 | #ifdef VOLUME_PARAMETERS |
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[c4e7a5f] | 197 | norm += weight * form_volume(VOLUME_PARAMETERS); |
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| 198 | #else |
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| 199 | norm += weight; |
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[f734e7d] | 200 | #endif |
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[c138211] | 201 | } |
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[750ffa5] | 202 | //else { printf("exclude qx,qy,I:%%g,%%g,%%g\n",qi,scattering); } |
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[f734e7d] | 203 | } |
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| 204 | IQ_CLOSE_LOOPS |
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[c4e7a5f] | 205 | // norm can only be zero if volume is zero, so no scattering |
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| 206 | result[i] = (norm > 0. ? scale*ret/norm + background : background); |
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[f734e7d] | 207 | #else |
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| 208 | result[i] = scale*Iq(qi, IQ_PARAMETERS) + background; |
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| 209 | #endif |
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| 210 | } |
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| 211 | } |
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| 212 | #endif |
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| 213 | |
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| 214 | |
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| 215 | #ifdef IQXY_KERNEL_NAME |
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| 216 | kernel void IQXY_KERNEL_NAME( |
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| 217 | global const double *qx, |
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| 218 | global const double *qy, |
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| 219 | global double *result, |
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| 220 | const int Nq, |
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| 221 | #ifdef IQXY_OPEN_LOOPS |
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| 222 | #ifdef USE_OPENCL |
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| 223 | global double *loops_g, |
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| 224 | #endif |
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| 225 | local double *loops, |
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| 226 | const double cutoff, |
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| 227 | IQXY_DISPERSION_LENGTH_DECLARATIONS, |
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| 228 | #endif |
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| 229 | IQXY_FIXED_PARAMETER_DECLARATIONS |
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| 230 | ) |
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| 231 | { |
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| 232 | #ifdef USE_OPENCL |
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| 233 | #ifdef IQXY_OPEN_LOOPS |
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| 234 | // copy loops info to local memory |
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| 235 | event_t e = async_work_group_copy(loops, loops_g, (IQXY_DISPERSION_LENGTH_SUM)*2, 0); |
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| 236 | wait_group_events(1, &e); |
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| 237 | #endif |
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| 238 | |
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| 239 | int i = get_global_id(0); |
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| 240 | if (i < Nq) |
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| 241 | #else |
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| 242 | #pragma omp parallel for |
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| 243 | for (int i=0; i < Nq; i++) |
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| 244 | #endif |
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| 245 | { |
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| 246 | const double qxi = qx[i]; |
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| 247 | const double qyi = qy[i]; |
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[e3a9733] | 248 | #if USE_KAHAN_SUMMATION |
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| 249 | double accumulated_error = 0.0; |
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| 250 | #endif |
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[f734e7d] | 251 | #ifdef IQXY_OPEN_LOOPS |
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| 252 | double ret=0.0, norm=0.0; |
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| 253 | IQXY_OPEN_LOOPS |
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| 254 | //for (int radius_i=0; radius_i < Nradius; radius_i++) { |
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| 255 | // const double radius = loops[2*(radius_i)]; |
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| 256 | // const double radius_w = loops[2*(radius_i)+1]; |
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[c4e7a5f] | 257 | double weight = IQXY_WEIGHT_PRODUCT; |
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[f734e7d] | 258 | if (weight > cutoff) { |
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| 259 | |
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[750ffa5] | 260 | const double scattering = Iqxy(qxi, qyi, IQXY_PARAMETERS); |
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[9c79c32] | 261 | if (!isnan(scattering)) { // if scattering is bad, exclude it from sum |
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[c4e7a5f] | 262 | #if defined(IQXY_HAS_THETA) |
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| 263 | // Force a nominal value for the spherical correction even when |
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| 264 | // theta is +90/-90 so that there are no divide by zero problems. |
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| 265 | // For cos(theta) fixed at 90, we effectively multiply top and bottom |
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| 266 | // by 1e-6, so the effect cancels. |
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[0278e3f] | 267 | const double spherical_correction = fmax(fabs(cos(M_PI_180*theta)), 1.e-6); |
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[c4e7a5f] | 268 | weight *= spherical_correction; |
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[e3a9733] | 269 | #endif |
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[c4e7a5f] | 270 | const double next = weight * scattering; |
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[e3a9733] | 271 | #if USE_KAHAN_SUMMATION |
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| 272 | const double y = next - accumulated_error; |
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| 273 | const double t = ret + y; |
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| 274 | accumulated_error = (t - ret) - y; |
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| 275 | ret = t; |
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[f734e7d] | 276 | #else |
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[e3a9733] | 277 | ret += next; |
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[f734e7d] | 278 | #endif |
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| 279 | #ifdef VOLUME_PARAMETERS |
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[c4e7a5f] | 280 | norm += weight*form_volume(VOLUME_PARAMETERS); |
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| 281 | #else |
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| 282 | norm += weight; |
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[718514b] | 283 | #endif |
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[9c79c32] | 284 | } |
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[750ffa5] | 285 | //else { printf("exclude qx,qy,I:%%g,%%g,%%g\n",qi,scattering); } |
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[f734e7d] | 286 | } |
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| 287 | IQXY_CLOSE_LOOPS |
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[c4e7a5f] | 288 | // norm can only be zero if volume is zero, so no scattering |
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| 289 | result[i] = (norm>0. ? scale*ret/norm + background : background); |
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[f734e7d] | 290 | #else |
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| 291 | result[i] = scale*Iqxy(qxi, qyi, IQXY_PARAMETERS) + background; |
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| 292 | #endif |
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| 293 | } |
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| 294 | } |
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| 295 | #endif |
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