Update to v1.5.v1.5

  The update to version 1.5 is rather substantial, and introduces some minor
  backward-incompatibilities:
    * The header "#!symbols" has been replaced by "#!virtual_fields"
    * Multiplying polynomials using the '*' symbol is no longer supported (or,
      rather, the symbolic capabilities of meankondo were enhanced, and the
      syntax has been changed).
    * 'meantools exp' has been removed (its functionality is now handled by
      other means)
    * 'meantoolds derive' has been replaced by 'meantools differentiate'

  * The symbolic capabilities were enhanced: polynomials can now be
    multiplied, added, exponentiated, and their logarithms can be taken
    directly in the configuration file.

  * The flow equation can now be processed after being computed using the
    various "#!postprocess_*" entries.

  * Deprecated kondo_preprocess.

  * Compute the mean using an LU decomposition if possible.

  * More detailed checks for syntax errors in configuration file.

  * Check that different '#!group' entries are indeed uncorrelated.

  * New flags in meankondo: '-p' and '-A'.

  * New tool: meantools expand.

  * Improve conversion to LaTeX using meantools-convert

  * Assign terms randomly to different threads.

  * Multiple bug fixes

1 files changed, 10 insertions, 2 deletions

diff --git a/src/coefficient.h b/src/coefficient.h
index 43dd313..f8a813a 100644
--- a/src/coefficient.h
+++ b/src/coefficient.h
@@ -1,5 +1,5 @@
 /*
-Copyright 2015 Ian Jauslin
+Copyright 2015-2022 Ian Jauslin
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -48,12 +48,20 @@ int coefficient_concat_noinit(Coefficient input, Coefficient* output);
 
 // simplify a Coefficient
 int coefficient_simplify(Coefficient* coefficient);
+
+// put all terms under a common denominator and simplify the resulting fraction
+int coefficient_simplify_rational(Coefficient constant, Coefficient* coefficient);
+// put all terms under a common denominator
+int coefficient_common_denominator(Coefficient constant, Coefficient* coefficient);
+// simplify coefficient / constant
+int coefficient_simplify_fraction(Coefficient constant, Coefficient coefficient, Coefficient* remainder, Coefficient* out);
+
 // sort the terms in an equation (quicksort algorithm)
 int sort_coefficient(Coefficient* coefficient, int begin, int end);
 // exchange two terms (for the sorting algorithm)
 int exchange_coefficient_terms(int i, int j, Coefficient* coefficient);
 
-// derive a coefficient with respect to an index (as a polynomial) (does not derive the 1/(1+C)^p )
+// differentiate a coefficient with respect to an index (as a polynomial) (does not differentiate the 1/(1+C)^p )
 int coefficient_deriv_noinit(Coefficient input, int index, Coefficient* output);
 int coefficient_deriv(Coefficient input, int index, Coefficient* output);