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Added several functions to the intstack module.

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git-svn-id: svn://svn.cc65.org/cc65/trunk@4643 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
uz
2010-04-18 18:40:59 +00:00
parent 48c647b6bd
commit 922cbf08eb
2 changed files with 37 additions and 12 deletions
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25
src/common/intstack.c
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@@ -6,10 +6,10 @@
/* */
/* */
/* */
/* (C) 2004 Ullrich von Bassewitz */
/* R<EFBFBD>merstra<EFBFBD>e 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 */
@@ -48,7 +48,7 @@
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];
}
@@ -57,7 +57,7 @@ long IS_Get (const IntStack* S)
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;
}
@@ -66,7 +66,7 @@ void IS_Set (IntStack* S, long Val)
void IS_Drop (IntStack* S)
/* Drop a value from an int stack */
{
CHECK (S->Count > 1);
PRECONDITION (S->Count > 0);
--S->Count;
}
@@ -75,9 +75,18 @@ void IS_Drop (IntStack* S)
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];
}