docs + EVAL_H

H/eval.h

@@ -17,6 +17,8 @@
 
 /**
 
+@file eval.h
+
     @defgroup arithmetic Arithmetic in YAP 
 
 @ingroup builtins
@@ -27,8 +29,6 @@
 
   + See @ref arithmetic_operators for what arithmetic operations are supported in YAP
 
-    @tableofcontents
-
     YAP supports several different numeric types:
 <ul>
  <li><b>Tagged integers</b><p>
@@ -93,14 +93,20 @@ exceptions:
    @exception "evaluation_error(undefined( V ), Call)" result is not defined (nan)
    @exception "evaluation_error(overflow( V ), Call)" result is arithmetic overflow
    
+    @tableofcontents
+
 @secreflist
 @refitem is/2
 @refitem isnan/1
 @endsecreflist
 
+@{
 
  **/
 
+#ifndef EVAL_H
+#define EVAL_H 1
+
 #include <stdlib.h>
 
 /* C library used to implement floating point functions */
@@ -682,3 +688,7 @@ p_plus(Term t1, Term t2 USES_REGS) {
 #ifndef DBL_EPSILON /* normal for IEEE 64-bit double */
 #define DBL_EPSILON 0.00000000000000022204
 #endif
+
+/// @}
+
+#endif