X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fmath%2Fdesign-matrix.h;h=ba7f984218261d5db40af8c41a864b51c1af886a;hb=4398d3a1a881c6cafaeb0cbd11f56bd51d904c51;hp=8d56d010c5974f0ebf558dc3d12989f96e96f093;hpb=48346ffb716dcc6846ba9fc06b3bed624df767fa;p=pspp

diff --git a/src/math/design-matrix.h b/src/math/design-matrix.h
index 8d56d010c5..ba7f984218 100644
--- a/src/math/design-matrix.h
+++ b/src/math/design-matrix.h
@@ -58,6 +58,9 @@ struct design_matrix
 					   design_matrix_var
 					   structure.
 					 */
+  size_t *n_cases; /* Element i is the number of valid cases for this
+		      variable.
+		    */
   size_t n_vars;
 };
 
@@ -82,5 +85,9 @@ size_t design_matrix_var_to_column (const struct design_matrix *,
 
 const struct variable *design_matrix_col_to_var (const struct design_matrix *,
 					   size_t);
+void design_matrix_increment_case_count (struct design_matrix *, const struct variable *);
 
+void design_matrix_set_case_count (struct design_matrix *, const struct variable *, size_t);
+
+size_t design_matrix_get_case_count (const struct design_matrix *, const struct variable *);
 #endif