X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fmath%2Flinreg.c;h=147ff272cd54a4fee2e8bcb7aa83da3bea2baf05;hb=8ebdf8a26f4ed036c9621810e0561278090d921e;hp=be43735785b4d2aad74595c6450e19f352fbb3f2;hpb=cfb1b82ee049a562ea4c5b0784a45d5e324d35cb;p=pspp

diff --git a/src/math/linreg.c b/src/math/linreg.c
index be43735785..147ff272cd 100644
--- a/src/math/linreg.c
+++ b/src/math/linreg.c
@@ -247,7 +247,7 @@ linreg_residual (const linreg *c, double obs, const double *vals, size_t n_vals)
 /*
   Mean of the independent variable.
  */
-double linreg_get_indep_variable_mean (linreg *c, size_t j)
+double linreg_get_indep_variable_mean (const linreg *c, size_t j)
 {
   assert (c != NULL);
   return gsl_vector_get (c->indep_means, j);
@@ -390,7 +390,7 @@ double linreg_intercept (const linreg *c)
   return c->intercept;
 }
 
-gsl_matrix *
+const gsl_matrix *
 linreg_cov (const linreg *c)
 {
   return c->cov;
@@ -450,7 +450,7 @@ linreg_set_depvar_mean (linreg *c, double x)
 }
 
 double 
-linreg_get_depvar_mean (linreg *c)
+linreg_get_depvar_mean (const linreg *c)
 {
   return c->depvar_mean;
 }