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+/*
+Copyright 2015 Ian Jauslin
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+/*
+ typedefs used by meankondo
+*/
+
+#ifndef TYPES_H
+#define TYPES_H
+
+
+// rational number
+typedef struct Q{
+#ifndef RATIONAL_AS_FLOAT
+  long int numerator;
+  long int denominator;
+#else
+  long double numerator;
+  long double denominator;
+#endif
+} Q;
+
+// numbers
+typedef struct Number{
+  Q* scalars;
+  int* base;
+  int length;
+  int memory;
+} Number;
+
+// matrix
+typedef struct Number_Matrix{
+  Number** matrix;
+  int* indices;
+  int length;
+} Number_Matrix;
+
+// list of integers
+typedef struct Int_Array{
+  int* values;
+  int length;
+  int memory;
+} Int_Array;
+
+// string
+typedef struct Char_Array{
+  char* str;
+  int length;
+  int memory;
+} Char_Array;
+
+// string array
+typedef struct Str_Array{
+  Char_Array* strs;
+  int length;
+  int memory;
+} Str_Array;
+
+// polynomial
+typedef struct Polynomial{
+  Int_Array* monomials;
+  Int_Array* factors;
+  Number* nums;
+  int length;
+  int memory;
+} Polynomial;
+
+// matrix of polynomial
+typedef struct Polynomial_Matrix{
+  Polynomial** matrix;
+  int* indices;
+  int length;
+} Polynomial_Matrix;
+
+// denominators in coefficients (index of the denominator and the power to which it is raised)
+typedef struct coef_denom{
+  int index;
+  int power;
+} coef_denom;
+
+// coefficient
+typedef struct Coefficient{
+  Int_Array* factors;
+  Number* nums;
+  coef_denom* denoms;
+  int length;
+  int memory;
+} Coefficient;
+
+// grouped polynomial
+typedef struct Grouped_Polynomial{
+  Coefficient* coefs;
+  int* indices;
+  int length;
+  int memory;
+} Grouped_Polynomial;
+
+// rcc
+typedef struct RCC{
+  long double* values;
+  int* indices;
+  int length;
+} RCC;
+
+// identities between fields
+typedef struct Identities{
+  // left hand sides
+  Int_Array* lhs;
+  // right hand sides
+  Polynomial* rhs;
+  int length;
+  int memory;
+} Identities;
+
+// symbolic expressions
+typedef struct Symbols{
+  int* indices;
+  Polynomial* expr;
+  int length;
+  int memory;
+} Symbols;
+
+// groups of independent fields
+typedef struct Groups{
+  Int_Array* indices;
+  int length;
+  int memory;
+} Groups;
+
+// collection of fields
+typedef struct Fields_Table{
+  // constant parameters
+  Int_Array parameter;
+  // anticommuting external fields
+  Int_Array external;
+  // anticommuting internal fields
+  Int_Array internal;
+  // identities between fields
+  Identities ids;
+  // symbolic expressions (commuting)
+  Symbols symbols;
+  // list of anti-commuting variables (fields or symbols)
+  Int_Array fermions;
+} Fields_Table;
+
+// index labels
+typedef struct Labels{
+  Char_Array* labels;
+  int* indices;
+  int length;
+  int memory;
+} Labels;
+
+// id table
+typedef struct Id_Table{
+  int* indices;
+  Polynomial* polynomials;
+  int length;
+  int memory;
+} Id_Table;
+
+/*
+// polynomial scalar and vectors
+typedef struct Polynomial_Scalar{
+  Coefficient coef;
+  int* indices;
+  int length;
+} Polynomial_Scalar;
+typedef struct Polynomial_Vector{
+  Coefficient* coefv;
+  int* indices;
+  int length;
+} Polynomial_Vector;
+typedef struct Polynomial_Matrix{
+  Coefficient** coefm;
+  int* indices;
+  int length;
+} Polynomial_Matrix;
+*/
+
+
+// command line options
+typedef struct Meankondo_Options{
+  int threads;
+  int chain;
+} Meankondo_Options;
+
+typedef struct Numkondo_Options{
+  int display_mode;
+  int niter;
+  long double tol;
+  Char_Array eval_rccstring;
+} Numkondo_Options;
+
+typedef struct Meantools_Options{
+  int command;
+  int deriv_derivs;
+  Int_Array deriv_vars;
+  Char_Array eval_rccstring;
+} Meantools_Options;
+
+typedef struct Kondopp_Options{
+  int dimension;
+} Kondopp_Options;
+
+#endif