diff -r abaf2489c549 -r be60c22cddfe src/ccodegen.c
--- a/src/ccodegen.c	Fri Mar 04 14:48:28 2016 +0100
+++ b/src/ccodegen.c	Fri Mar 04 15:02:22 2016 +0100
@@ -39,11 +39,11 @@
     "while", NULL
 };
 
-int isctype(char *word, size_t len) {
+int check_ctype(char *word, size_t len) {
     return (word[len-2] == '_' && word[len-1] == 't');
 }
 
-int iscdirective(char *word) {
+int check_cdirective(char *word) {
     return (word[0] == '#');
 }
 
@@ -140,7 +140,7 @@
                     /* interpret word int_t */
                     if (wp > 0 && wp < WORDBUF_SIZE) {
                         int closespan = 1;
-                        if (iskeyword(hltr->word, hltr->keywords)) {
+                        if (check_keyword(hltr->word, hltr->keywords)) {
                             memcpy_const(dest, dp, 
                                 "<span class=\"c2html-keyword\">");
                         } else if (hltr->istype(hltr->word, wp)) {
@@ -151,7 +151,7 @@
                                 "#include", hltr->word, WORDBUF_SIZE);
                             memcpy_const(dest, dp, 
                                 "<span class=\"c2html-directive\">");
-                        } else if (iscapsonly(hltr->word, wp)) {
+                        } else if (check_capsonly(hltr->word, wp)) {
                             memcpy_const(dest, dp, 
                                 "<span class=\"c2html-macroconst\">");
                         } else {