X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fmath%2Flinreg%2Fcoefficient.c;h=1f5d9ec4031e36b18ac6f4c0fe6c9cf1ffeb8af9;hb=de881ed979f2a6c382589b9d54d485ad88323821;hp=2cca9f54653327918691ab228966f32ca82d03b8;hpb=e947f08aea815968ef993d572977e271fa3ad4da;p=pspp-builds.git

diff --git a/src/math/linreg/coefficient.c b/src/math/linreg/coefficient.c
index 2cca9f54..1f5d9ec4 100644
--- a/src/math/linreg/coefficient.c
+++ b/src/math/linreg/coefficient.c
@@ -60,6 +60,7 @@ pspp_linreg_coeff_init (pspp_linreg_cache * c, struct design_matrix *X)
   struct pspp_linreg_coeff *coeff;
 
   c->coeff = xnmalloc (X->m->size2 + 1, sizeof (*c->coeff));
+  c->coeff->v_info = NULL; /* Intercept has no associated variable. */
   for (i = 0; i < X->m->size2; i++)
     {
       j = i + 1;		/* The first coefficient is the intercept. */
@@ -137,7 +138,8 @@ pspp_linreg_coeff_get_n_vars (struct pspp_linreg_coeff *c)
 }
 
 /*
-  Which variable does this coefficient match?
+  Which variable does this coefficient match? I should be
+  0 unless the coefficient refers to an interaction term.
  */
 const struct variable *
 pspp_linreg_coeff_get_var (struct pspp_linreg_coeff *c, int i)
@@ -164,7 +166,7 @@ pspp_linreg_coeff_get_value (struct pspp_linreg_coeff *c,
     {
       return NULL;
     }
-  if (v->type == NULL)
+  if (v->type == NUMERIC)
     {
       return NULL;
     }