1 files changed, 122 insertions, 0 deletions
diff --git a/sci_gateway/cpp/sci_sym_get_dbl_arr.cpp b/sci_gateway/cpp/sci_sym_get_dbl_arr.cpp
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+++ b/sci_gateway/cpp/sci_sym_get_dbl_arr.cpp
@@ -0,0 +1,122 @@
+// Copyright (C) 2015 - IIT Bombay - FOSSEE
+//
+// This file must be used under the terms of the CeCILL.
+// This source file is licensed as described in the file COPYING, which
+// you should have received as part of this distribution.  The terms
+// are also available at
+// http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
+// Author: Sai Kiran
+// Organization: FOSSEE, IIT Bombay
+// Email: toolbox@scilab.in
+
+#include <symphony.h>
+#include <sci_iofunc.hpp>
+extern sym_environment* global_sym_env;//defined in globals.cpp
+
+extern "C" {
+#include <api_scilab.h>
+#include <Scierror.h>
+#include <BOOL.h>
+#include <stdlib.h>
+#include <malloc.h>
+#include <localization.h>
+#include <sciprint.h>
+
+#include <string.h>
+
+/* This is generelized function for 
+ * sym_getVarLower,sym_getVarUpper,sym_getRhs,sym_getConstrRange,sym_getConstrLower,
+ * sym_getConstrUpper and sym_getObjCoeff .
+ * (Functions taking symphony env and pointer to array of doubles as arguments)
+*/
+int sci_sym_get_dbl_arr(char *fname, unsigned long fname_len){
+
+	int result_len=0;/* Length of the output double array */
+	double *result=NULL;/* Pointer to output double array */
+  
+	//check whether we have no input and one output argument or not
+	CheckInputArgument(pvApiCtx, 0, 0) ; //no input argument
+	CheckOutputArgument(pvApiCtx, 1, 1) ; //one output argument
+	
+	/* Array of possible callers of this function */
+	char* arr_caller[]={"sym_getVarLower","sym_getVarUpper",
+						"sym_getRhs","sym_getConstrRange",
+						"sym_getConstrLower","sym_getConstrUpper",
+						"sym_getObjCoeff"};
+
+	/* Array of functions to be called */
+	int (*fun[])(sym_environment*,double*)= {sym_get_col_lower,sym_get_col_upper,
+											 sym_get_rhs,sym_get_row_range,
+											 sym_get_row_lower,sym_get_row_upper,
+											sym_get_obj_coeff };
+	
+	/* Array of functions the above functions depend on */
+	int (*fun_depends[])(sym_environment*,int*) = {sym_get_num_cols,sym_get_num_cols,
+													sym_get_num_rows,sym_get_num_rows,
+													sym_get_num_rows,sym_get_num_rows,
+													sym_get_num_cols };
+
+	/* We want to ouput row-matrix if we are dealing with column data .
+	 * column matrix if we are dealing with row data .
+	 * 0 - output a row matrix.
+	 * 1 - output a column matrix.
+	 */
+	int representation = 0; //output a row matrix
+
+	/* Array of representations of output depending on the above functions.
+	 * It's length is same as above arrays.
+	*/
+	int matrix_representation[] = { 0 ,0 , 1, 1, 1, 1, 0};
+	if(global_sym_env==NULL) //There is no environment opened.
+		sciprint("Error: Symphony environment is not initialized.\n");
+	else {
+		//There is an environment opened
+		int iter=0,length=sizeof(arr_caller)/sizeof(char*),found_at= -1;
+		for (;iter < length ;++iter){
+			if (!strcmp(fname,arr_caller[iter]))
+				found_at=iter;
+			}
+		if (found_at != -1){
+			int status1=fun_depends[found_at](global_sym_env,&result_len);
+			if ( status1 == FUNCTION_TERMINATED_NORMALLY && result_len ) {
+				result=(double*)malloc( sizeof(double) * result_len );
+				int ret_val=fun[found_at](global_sym_env,result);
+				sciprint("\nFunction invoked unsuccessfully.\n");
+				if (ret_val == FUNCTION_TERMINATED_ABNORMALLY)
+					result_len=0;
+				else {
+					if (found_at == 6) {//if called function is sym_getObjCoeff
+						int iter=0,sense=0,status2 = sym_get_obj_sense(global_sym_env,&sense);
+						if (sense == -1) // Multiply with -1 while showing 
+							for (;iter < result_len;++iter) result[iter] *= -1; 						
+						}
+					representation = matrix_representation[found_at];
+					}				
+				}
+			else
+				sciprint("\n Is a problem loaded ? \n");
+			}
+		else //very rare case
+			sciprint("\nError in function mapping in scilab script\n");
+		}
+
+	//Copy the result to scilab. Location is position next to input arguments.
+	SciErr err;
+	if (representation) // output a column-matrix
+		err=createMatrixOfDouble(pvApiCtx,nbInputArgument(pvApiCtx)+1,result_len,1,result);
+	else // output a row-matrix
+		err=createMatrixOfDouble(pvApiCtx,nbInputArgument(pvApiCtx)+1,1,result_len,result);
+	free(result); //Free the allocated space
+	result=NULL; //Set to NULL
+	if (err.iErr){ //Process error
+		AssignOutputVariable(pvApiCtx, 1) = 0;
+        printError(&err, 0);
+        return 1;
+    	}
+
+	//assign result position to output argument
+	AssignOutputVariable(pvApiCtx, 1) = nbInputArgument(pvApiCtx) + 1;
+	//ReturnArguments(pvApiCtx);
+	return 0;
+	}
+}