Use const consistently in linreg routines, to avert warnings.

diff --git a/src/math/linreg.c b/src/math/linreg.c
index 306ef31306d0ceca972d344313b44ebec2795fec..f2897e8e8d2461cd3c4a4484335bcca2bb0ba1c3 100644 (file)
--- a/src/math/linreg.c
+++ b/src/math/linreg.c
@@ -96,10 +96,10 @@ linreg_mean_std (gsl_vector_const_view v, double *mp, double *sp, double *ssp)
   The return value is the number of distinct variables found.
  */
 int
-pspp_linreg_get_vars (const void *c_, struct variable **v)
+pspp_linreg_get_vars (const void *c_, const struct variable **v)
 {
   const pspp_linreg_cache *c = c_;
-  struct variable *tmp;
+  const struct variable *tmp;
   int i;
   int j;
   int result = 0;
@@ -663,7 +663,7 @@ void pspp_linreg_set_indep_variable_mean (pspp_linreg_cache *c, const struct var
 static struct design_matrix *
 rearrange_covariance_matrix (const struct design_matrix *cov, pspp_linreg_cache *c)
 {
-  struct variable **model_vars;
+  const struct variable **model_vars;
   struct design_matrix *result;
   size_t *permutation;
   size_t i;

diff --git a/src/math/linreg.h b/src/math/linreg.h
index a9577d648372dc640056fc07762405ccc0aff6c1..adb9f16d8bf1c3fb7de898c75c64cb7e2c3ecd2c 100644 (file)
--- a/src/math/linreg.h
+++ b/src/math/linreg.h
@@ -199,7 +199,7 @@ pspp_linreg_residual (const struct variable **, const union value **,
 /*
   All variables used in the model.
  */
-int pspp_linreg_get_vars (const void *, struct variable **);
+int pspp_linreg_get_vars (const void *, const struct variable **);
 
 struct pspp_coeff *pspp_linreg_get_coeff (const pspp_linreg_cache
                                                       *,