Replace C++ (in)equality checks with proper SCM syntax

[lilypond.git] / lily / output-def-scheme.cc

diff --git a/lily/output-def-scheme.cc b/lily/output-def-scheme.cc
index 0b85c133a8cf6cd32b1522fd7e590592ab7e0dd6..3c4ee413e7cc1a099b9f0501b5d99e2449c00ed4 100644 (file)
--- a/lily/output-def-scheme.cc
+++ b/lily/output-def-scheme.cc
@@ -36,9 +36,9 @@ LY_DEFINE (ly_output_def_lookup, "ly:output-def-lookup",
   LY_ASSERT_TYPE (ly_is_symbol, sym, 2);
 
   SCM answer = op->lookup_variable (sym);
-  if (answer == SCM_UNDEFINED)
+  if (SCM_UNBNDP (answer))
     {
-      if (val == SCM_UNDEFINED)
+      if (SCM_UNBNDP (val))
        val = SCM_EOL;
 
       answer = val;
@@ -187,7 +187,7 @@ LY_DEFINE (ly_paper_fonts, "ly:paper-fonts",
   SCM tab2 = b->lookup_variable (ly_symbol2scm ("pango-fonts"));
 
   SCM alist1 = SCM_EOL;
-  if (scm_hash_table_p (tab1) == SCM_BOOL_T)
+  if (to_boolean (scm_hash_table_p (tab1)))
     {
       alist1 = scm_append (ly_alist_vals (ly_hash2alist (tab1)));