shithub: scc

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Add multiplication, division and modulo

These three operations have the same precedence level,
so they go in the same function.

--- a/cc.h

+++ b/cc.h

@@ -219,7 +219,7 @@

 enum {

 	OCAST, OPTR, OADD, OARY, OSIZE, OMUL, OSUB,

-	OINC, ODEC, OPINC, OPDEC

+	OINC, ODEC, OPINC, OPDEC, ODIV, OMOD

 };

 extern void

--- a/code.c

+++ b/code.c

@@ -13,7 +13,9 @@

 	[OPINC] = ";+",

 	[OPDEC] =  ";=",

 	[OSIZE] = "#",

-	[OPTR] = "@"

+	[OPTR] = "@",

+	[OMOD] = "*",

+	[ODIV] = "/'"

 };

 Node *

--- a/expr.c

+++ b/expr.c

@@ -246,13 +246,32 @@

 	return unary();

 }

+static struct node *

+mul(void)

+{

+	register Node *np;

+	register char op;

+

+	np = cast();

+	for (;;) {

+		switch (yytoken) {

+		case '*': op = OMUL; break;

+		case '/': op = ODIV; break;

+		case '%': op = OMOD; break;

+		default: return np;

+		}

+		next();

+		np = arithmetic(op, np, cast());

+	}

+}

+

 Node *

 expr(void)

 {

-	Node *np;

+	register Node *np;

 	do

-		np = cast();

+		np = mul();

 	while (yytoken == ',');

 	return np;

 }

-- 

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