[4] | 1 | /* SolenoidPass.c |
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| 2 | Accelerator Toolbox |
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| 3 | Revision 7/16/03 |
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| 4 | Christoph Steier, CSteier@lbl.gov |
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| 5 | */ |
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| 6 | |
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| 7 | #include "mex.h" |
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| 8 | #include "elempass.h" |
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| 9 | #include "../atlalib.c" |
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| 10 | #include <stdlib.h> |
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| 11 | #include <math.h> |
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| 12 | |
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| 13 | /******************************************************************************/ |
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| 14 | /* PHYSICS SECTION ************************************************************/ |
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| 15 | |
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| 16 | void SRotationPass(double *r, double *R, int num_particles) |
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| 17 | { int c; |
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| 18 | double *r6; |
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| 19 | for(c = 0;c<num_particles;c++) |
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| 20 | { r6 = r+c*6; |
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| 21 | |
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| 22 | ATmultmv(r6,R); |
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| 23 | |
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| 24 | } |
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| 25 | } |
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| 26 | |
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| 27 | /********** END PHYSICS SECTION ***********************************************/ |
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| 28 | /******************************************************************************/ |
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| 29 | |
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| 30 | /********** WINDOWS DLL GATEWAY SECTION ***************************************/ |
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| 31 | |
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| 32 | |
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| 33 | ExportMode int* passFunction(const mxArray *ElemData, int *FieldNumbers, |
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| 34 | double *r_in, int num_particles, int mode) |
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| 35 | |
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| 36 | #define NUM_FIELDS_2_REMEMBER 1 |
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| 37 | |
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| 38 | { double *pr; |
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| 39 | mxArray *tmpmxptr; |
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| 40 | int *returnptr,fnum; |
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| 41 | int *NewFieldNumbers; |
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| 42 | |
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| 43 | switch(mode) |
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| 44 | { case NO_LOCAL_COPY: /* Get fields by names from MATLAB workspace */ |
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| 45 | { |
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| 46 | tmpmxptr=mxGetField(ElemData,0,"R"); |
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| 47 | if(tmpmxptr) |
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| 48 | pr = mxGetPr(tmpmxptr); |
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| 49 | else |
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| 50 | mexErrMsgTxt("Required field 'R' was not found in the element data structure"); |
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| 51 | |
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| 52 | returnptr = NULL; |
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| 53 | |
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| 54 | } break; |
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| 55 | case MAKE_LOCAL_COPY: /* Find field numbers first |
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| 56 | Save a list of field number in an array |
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| 57 | and make returnptr point to that array |
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| 58 | */ |
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| 59 | { |
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| 60 | NewFieldNumbers = (int*)mxCalloc(NUM_FIELDS_2_REMEMBER,sizeof(int)); |
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| 61 | |
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| 62 | fnum = mxGetFieldNumber(ElemData,"R"); |
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| 63 | if(fnum<0) |
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| 64 | mexErrMsgTxt("Required field 'R' was not found in the element data structure"); |
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| 65 | NewFieldNumbers[0] = fnum; |
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| 66 | |
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| 67 | |
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| 68 | pr = mxGetPr(mxGetFieldByNumber(ElemData,0,NewFieldNumbers[0])); |
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| 69 | |
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| 70 | returnptr = NewFieldNumbers; |
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| 71 | |
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| 72 | } break; |
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| 73 | |
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| 74 | case USE_LOCAL_COPY: /* Get fields from MATLAB using field numbers |
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| 75 | The second argument ponter to the array of field |
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| 76 | numbers is previously created with |
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| 77 | SRotationPass( ..., MAKE_LOCAL_COPY) |
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| 78 | */ |
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| 79 | |
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| 80 | { pr = mxGetPr(mxGetFieldByNumber(ElemData,0,FieldNumbers[0])); |
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| 81 | |
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| 82 | returnptr = FieldNumbers; |
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| 83 | |
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| 84 | |
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| 85 | } break; |
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| 86 | default: |
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| 87 | { mexErrMsgTxt("No match for calling mode in function SRotationPass\n"); |
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| 88 | } |
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| 89 | } |
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| 90 | |
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| 91 | SRotationPass(r_in, pr, num_particles); |
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| 92 | return(returnptr); |
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| 93 | } |
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| 94 | |
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| 95 | |
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| 96 | /********** END WINDOWS DLL GATEWAY SECTION ***************************************/ |
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| 97 | /********** MATLAB GATEWAY ***************************************/ |
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| 98 | |
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| 99 | void mexFunction( int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[]) |
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| 100 | { |
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| 101 | int m, n; |
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| 102 | double *r_in; |
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| 103 | double *pr; |
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| 104 | mxArray *tmpmxptr; |
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| 105 | |
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| 106 | /* ALLOCATE memory for the output array of the same size as the input */ |
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| 107 | m = mxGetM(prhs[1]); |
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| 108 | n = mxGetN(prhs[1]); |
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| 109 | if(m!=6) |
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| 110 | {mexErrMsgTxt("Second argument must be a 6 x N matrix");} |
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| 111 | |
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| 112 | |
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| 113 | tmpmxptr = mxGetField(prhs[0],0,"R"); |
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| 114 | if(tmpmxptr) |
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| 115 | pr = mxGetPr(tmpmxptr); |
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| 116 | else |
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| 117 | mexErrMsgTxt("Required field 'R' was not found in the element data structure"); |
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| 118 | |
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| 119 | plhs[0] = mxDuplicateArray(prhs[1]); |
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| 120 | r_in = mxGetPr(plhs[0]); |
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| 121 | SRotationPass(r_in, pr, n); |
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| 122 | } |
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| 123 | |
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| 124 | |
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