/* */
/* */
/* */
-/* (C) 2004 Ullrich von Bassewitz */
-/* Römerstraße 52 */
-/* D-70794 Filderstadt */
-/* EMail: uz@cc65.org */
+/* (C) 2004-2010, Ullrich von Bassewitz */
+/* Roemerstrasse 52 */
+/* D-70794 Filderstadt */
+/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
long IS_Get (const IntStack* S)
/* Get the value on top of an int stack */
{
- CHECK (S->Count > 0);
+ PRECONDITION (S->Count > 0);
return S->Stack[S->Count-1];
}
void IS_Set (IntStack* S, long Val)
/* Set the value on top of an int stack */
{
- CHECK (S->Count > 0);
+ PRECONDITION (S->Count > 0);
S->Stack[S->Count-1] = Val;
}
-long IS_Pop (IntStack* S)
-/* Pop a value from an int stack */
+void IS_Drop (IntStack* S)
+/* Drop a value from an int stack */
{
- CHECK (S->Count > 1);
- return S->Stack[--S->Count];
+ PRECONDITION (S->Count > 0);
+ --S->Count;
}
void IS_Push (IntStack* S, long Val)
/* Push a value onto an int stack */
{
- CHECK (S->Count < sizeof (S->Stack) / sizeof (S->Stack[0]));
+ PRECONDITION (S->Count < sizeof (S->Stack) / sizeof (S->Stack[0]));
S->Stack[S->Count++] = Val;
}
+long IS_Pop (IntStack* S)
+/* Pop a value from an int stack */
+{
+ PRECONDITION (S->Count > 0);
+ return S->Stack[--S->Count];
+}