Missing documentation for parameters.

git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/get_persistence@1220 636b058d-ea47-450e-bf9e-a15bfbe3eedb

Former-commit-id: 190cfccdca4d4fd15066ad04885d5dc19428d59c

1 files changed, 4 insertions, 3 deletions

diff --git a/src/Persistent_cohomology/include/gudhi/Persistent_cohomology.h b/src/Persistent_cohomology/include/gudhi/Persistent_cohomology.h
index 23beaa96..efa9a367 100644
--- a/src/Persistent_cohomology/include/gudhi/Persistent_cohomology.h
+++ b/src/Persistent_cohomology/include/gudhi/Persistent_cohomology.h
@@ -649,10 +649,11 @@ class Persistent_cohomology {
     return betti_numbers;
   }
 
-  /** @brief Returns the persistentBetti number of the dimension passed by parameter.
+  /** @brief Returns the persistent Betti number of the dimension passed by parameter.
    * @param[in] dimension The Betti number dimension to get.
-   * @return Betti number of the given dimension
-   *
+   * @param[in] from The persistence birth limit to be added in the number \f$(persistent birth \leq from)\f$.
+   * @param[in] to The persistence death limit to be added in the number  \f$(persistent death > from)\f$.
+   * @return Persistent Betti number of the given dimension
    */
   int persistent_betti_number(int dimension, Filtration_value from, Filtration_value to) const {
     int betti_number = 0;